Software development is often a test creation process. To achieve success, it is worth considering what features good tests have. Well-written tests should document the implemented functionality and check the tested function well.

Ecto uses SHARE UPDATE EXCLUSIVE lock to ensure that only one instance is running a migration at a time and only once. Internally stored version and inserted at allows you to modify and improve created files.

Refactoring should be an integral part of a developer’s day. Systematic refactoring allows for reducing the process of self-degradation of the project. This change makes our code easier to understand and cheaper to maintain.

In Elixir, regular expressions can extract a lot of useful information. Using Regex and named_captures/3 function, we can parse the input data based on the prepared regex.

Being promoted from Programmer to Team Leader is not unusual. Should Team Lead continue to code? Managing people becomes your job, among other things. You do not have to stop coding completely. Unfortunately, it will be less than before.

It is one of the few “things” that will ultimately happen to everyone. How well are you using your life? Do you like your job and the people you work with? Instead of postponing it, just start acting!

Debugging Elixir code has become even more accessible thanks to the dbg function. Thanks to the latest version, your work may become more pleasant and the search for errors even easier. Check how to apply new possibilities in your code. A simple one-line can facilitate your error analysis.

Special functions are used to compare dates. With it, you can prepare a comparison based on semantics. Simple functions can solve your problems with incorrect results.

Every change is hard. Before making changes, get to know yourself from the best side. Try to understand it as quickly as possible, at least in general terms.

Safe passwords are a very important aspect of application security. How can you check if the password has not been used before? Compare passwords in Elixir thanks to Bcrypt.

The initial solution we wanted to apply may turn out to be insufficient. Try to provide as much helpful information as possible. Make sure you understand all the requirements well. Don’t be afraid that something will go wrong. Failure isn’t fatal, but failure to change might be.

Sometimes our application collects more logs than we would expect. Especially in the case of endpoints responsible for the server status. Thanks to a simple plug, you can inform about the system state all the time without logging this request.

The Twelve-Factor App methodology is a methodology for building software-as-a-service applications. It allows you to eliminate the most common problems with our applications. Some of them have already become the industry standard, so you should get to know them all. The methodology constitutes design guidelines strongly focused on cloud-native, portable, and resilient applications.

Selling is not an easy job. The customers don’t care about you. What matters is how you can solve their problems. People often recommend and buy from people they know well, like, and trust. See how to use the KLT principle in your business.

Freedom of choice is often the biggest curse. Sometimes the basics are enough, and the rest is just an addition. Don’t overcomplicate, don’t add maintenance, and keep it simple to be less sensitive.

When connecting to the server with SSH, you may need to use a certificate other than the default one. Additionally, often the username is also more complicated. How do you remember it all? Special configuration file that will help us solve the problem.

Protecting confidential data is a daily task. Thanks to a good web browser, a strong password, and other security measures, you can mitigate the risk of your identity being stolen. Use this personal security checklist to be even more secure!

Guards are a great way to check data limits. They are safe and can make the everyday work with the project more pleasant and, at the same time, limit the duplicated code. And it’s all in pattern matching!

One of the possible vectors of an attack on the system is the disclosure of the used keys, certificates, or other access data. I found TruffleHog as a tool to verify your project. The tool can scan projects on GitHub or GitLab, including entire organizations! You can attach them to your CI/CD pipeline to verify that no confidential information has been published.

JSON Web Tokens known as JWT, are a great way to ensure security in communication between system parts. Remember not to trust the user and verify the data before use. JWT contains a lot of information about the user and his permissions. It is also a well-thought-out structure. It indicates in an accessible way for whom and by whom the token was prepared. Also, check out the topic of key rotation and its benefits.

Feeling overwhelmed by work is quite a common feeling. Especially if we work on the project for a long time. Good planning can make your work more pleasant and simplified. You don’t have to complete all tasks (alone). Some tasks can even be removed. With the Eisenhower matrix you can manage your priorities.

Error handling is an integral part of any project. However, only a few can do it well. What makes an error message good? Take care of the language of the message, its length and indicate how to mitigate errors. Have automatic bug reporting tools to quickly respond to system problems.

I would like to present some useful tricks to speed up your work. Elixir’s interactive shell is a great tool to make your work comfortable. You don’t need to use a browser to check function errors. You have everything available in the console!

One of the advantages of Elixir is its openness. You can get more readable code with the command wrapped in tuple. You don’t need to modify the response from functions itself.

The presentation of extra details about your website is straightforward. All you need to do is use Open Graph protocol. Any web page can become a rich object in a social graph. You can use it to show a thumbnail, author details, or even a short description.

You can use Ecto to check any information from the user. Extra, we have another layer of security. Only the supported parameters are passed to the domain layer. Using Ecto to verify parameters from the user is not difficult and can be part of your API verification pipeline.

A lot is happening in the IT world. Instead of jumping from one topic to another nervously, it’s worth concentrating on one thing. Stop for a moment and identify the problems. Also, remember that there is no right way in life. One is faster, and the other is slower. Don’t be afraid to ask for help.

Elixir 1.12 introduced two very useful macros. They can be life savings helpers in your codebase. Instead of write extra functions, you can have nice logging and executing actions based on given data.

Users often do not see the dangers of a weak password. Often, they reuse the same passwords on different sites to make their daily lives easier. Security is one of the critical aspects of any project. With Have I Been Pwned? it is possible to check passwords based on various leaks.

Not so long ago, to release the application, it was necessary to modify the binary files on the servers. Thanks to good DevOps practices, the entire process can be changed. It is possible to achieve tens or hundreds of releases each day. Everything without the downtime of the application.

Start from understanding the needs and point of view of the organization. Take care of good communication with customers. Don’t be afraid to develop both technical and soft skills. You will have a lot of battles at work. Choose wisely what you can engage in, given your limited time capacity. Act locally, think globally to change the project in small steps. Use non-hanging fruit to be successful and avoid burnout.

In my opinion, the best investment is our development. It allows us to achieve better results, receives promotions, and increase our remuneration. By investing in ourselves, we invest in our future. You didn’t know everything (and you still don’t know everything). It is worth trying to help others and learning at the same time.

Many applications introduce some kind of status to make it easier to share data. However, more and more modules in your codebase need to be explicit about these assumptions. Views can eliminate the problematic SQL query. It’s also great way to introduce well-defined entities.

Understanding the business is critical. It allows you to achieve better results in a shorter time. Don’t try to be an expert right away. Learn and don’t be afraid to ask when something is unclear. A common language is an opportunity for discussion with the client.

Automated testing can unburden Quality Assurance teams from the monotonous manual review of every change. They can also be a great acceleration for programmers. But they won’t make your organization or product great overnight. It would help if you had people’s support, a clear plan, and an understanding of expectations.

The more time we have to do the job (especially in the office), the longer it takes. Work complicates to fill the available time. Check out Parkinson’s Law and understand why!

Don’t be afraid to make mistakes. Even the best programmers make mistakes. However, minimize their impact and react quickly to the most critical problems. It is much better to make mistakes but fix them quickly than to delay the development phase and not provide functionality.

We have a new version of the most popular Elixir framework - Phoenix framework. New generators, fixes and improvements are now available. Find out more about the new HEEx engine.

A good recruitment process starts with a personalized message selected for a specific candidate. Worth mentioning which technologies are used in the project. Try to keep the first conversations short but very meaningful so that neither party feels like wasting their time.

Try to use setup_all to prepare the data once and re-use it in tests. Use tags to have a better context and be able to exclude some tests. Prepare a processing pipeline to check the quick tests first, and when they do not fail, take care of the more time-demanding tests.

Code review can be an opportunity to sharing knowledge. Finding errors is a side effect of the entire code review process. Thanks to code review, you can promote one standard style of changes to the entire team. Don’t be afraid to ask if you don’t understand something.

Have you thought about the response statuses of your endpoints? Some of them can be used for scanning your architecture. Some attacks on IT systems target the weakest areas, which may be addresses used for internal purposes.

Instead of focusing solely on our business, we should try to understand the client’s expectations. Your client’s success is your success. A satisfied customer is our primary source of recommendations. Treat others as you would like others to treat you.

We expect our estimates will have a positive impact on the implementation. The most significant value of the estimation is not the value itself. It is a better understanding of the project, and a consistent view of the tasks carried out.

It is not always possible to be right every time. It didn’t really matter who’s the solution was chosen. What counts for the customer is a well-implemented project that meets his expectations.

GitHub Copilot tries to understand the programmer’s intentions and generate the code closest to the expectations. Aside from generating code, understanding the programmer’s intentions can be a much bigger problem. The use of the code created by this tool remains controversial.

Companies often create strategy plans called roadmaps. In the case of a personal roadmap, the plan is for a specific person - you. It can be a great way to achieve your goals and expectations.

We don’t touch the code in our projects with equal frequency. The tool for automatically discovering candidates comes in handy by identifying the most frequently modified files with high cyclomatic complexity. Then we can focus on these files and make changes to work with better codebase.

Knowledge sharing can be a great way to grow faster. It’s also an excellent opportunity to build the image of the expert. There will always be someone we can help. Our knowledge can be helpful and a huge step in personal development.

Developers and business misunderstand the concept of technical debt. Building on weak foundations can result in losses and risks to your business. Instead of talking about debt, we should talk about missed opportunities.

Taking notes and summaries of meetings can provide a better engagement in discussions. Notes can also be a source of truth and a good reference while working. Do it on paper or immediately digitally, depending on your preferences.

You don’t want to postpone tasks? The best way is to change your approach and set the time window for the project. Instead of dividing up into tasks and thinking about everything right away, you can accomplish as much as you can.

We spend most of our life at work. Work should not be a place where we are forced to go. Have you considered the enemies of our work? Blame culture, ego, responsibilities - these are only some of the topics worth paying attention to.

I love podcasts because they can change a lot in our lives. Recently I was analyzing one, and I would like to share something that seems extremely important to me.

Recently I came across the topic of learning and documenting progress. Sharing our development with others can be done in many ways. I want to share my opinion about the advantages I see.

Daily work provides many situations to upset, surprise, and even laugh. I asked my friends who are programmers what annoyed them. Please don’t take it as a complaint, but rather as an opportunity to change.

Most of our projects use databases. We often do not realize that incorrectly used functionality may block our applications. Simple changes can save us from unpleasant consequences.

No project is perfect from the start. The real problems are very complicated. While something seems simple and fits perfectly, it may not be. I want to present the most critical and unchanging aspect of each project.

Changing your job or team often means changing the current project. It can be a difficult situation for most, especially at the beginning. The first impression can only be made once. It’s worth doing it right. See what we should do to get noticed at a new project.

The latest changes to the Inspect protocol can help you change the way data is presented. With the new optional option, you can only indicate information when the data has changed.

Software development is often a test creation process. To achieve success, it is worth considering what features good tests have. Well-written tests should document the implemented functionality and check the tested function well.

I introduced the possibility of commenting on posts directly on the page. With giscus, we can use Discussions on GitHub to store comments. In this simple way, you can add comments to your Jekyll blog!

In programming, we often need fairly distribution of data. Using phash2 we can get the same hash for the same Erlang term regardless of machine architecture and ERTS version. This fast function should always be used for hashing any data and limiting the result to a range of integers.

Ecto uses SHARE UPDATE EXCLUSIVE lock to ensure that only one instance is running a migration at a time and only once. Internally stored version and inserted at allows you to modify and improve created files.

In Elixir, regular expressions can extract a lot of useful information. Using Regex and named_captures/3 function, we can parse the input data based on the prepared regex.

It is one of the few “things” that will ultimately happen to everyone. How well are you using your life? Do you like your job and the people you work with? Instead of postponing it, just start acting!

GitHub offers a great opportunity to create our card for everyone visiting our profile. Best of all, even this card uses a version control system.

Debugging Elixir code has become even more accessible thanks to the dbg function. Thanks to the latest version, your work may become more pleasant and the search for errors even easier. Check how to apply new possibilities in your code. A simple one-line can facilitate your error analysis.

Special functions are used to compare dates. With it, you can prepare a comparison based on semantics. Simple functions can solve your problems with incorrect results.

Every change is hard. Before making changes, get to know yourself from the best side. Try to understand it as quickly as possible, at least in general terms.

The Twelve-Factor App methodology is a methodology for building software-as-a-service applications. It allows you to eliminate the most common problems with our applications. Some of them have already become the industry standard, so you should get to know them all. The methodology constitutes design guidelines strongly focused on cloud-native, portable, and resilient applications.

Selling is not an easy job. The customers don’t care about you. What matters is how you can solve their problems. People often recommend and buy from people they know well, like, and trust. See how to use the KLT principle in your business.

Freedom of choice is often the biggest curse. Sometimes the basics are enough, and the rest is just an addition. Don’t overcomplicate, don’t add maintenance, and keep it simple to be less sensitive.

Sending a message to yourself as a process is an easy way to schedule an action to retry. However, it is not always necessary to send this message. Find out how easy it is to cancel a scheduled message.

Protecting confidential data is a daily task. Thanks to a good web browser, a strong password, and other security measures, you can mitigate the risk of your identity being stolen. Use this personal security checklist to be even more secure!

One of the possible vectors of an attack on the system is the disclosure of the used keys, certificates, or other access data. I found TruffleHog as a tool to verify your project. The tool can scan projects on GitHub or GitLab, including entire organizations! You can attach them to your CI/CD pipeline to verify that no confidential information has been published.

Error handling is an integral part of any project. However, only a few can do it well. What makes an error message good? Take care of the language of the message, its length and indicate how to mitigate errors. Have automatic bug reporting tools to quickly respond to system problems.

I would like to present some useful tricks to speed up your work. Elixir’s interactive shell is a great tool to make your work comfortable. You don’t need to use a browser to check function errors. You have everything available in the console!

The presentation of extra details about your website is straightforward. All you need to do is use Open Graph protocol. Any web page can become a rich object in a social graph. You can use it to show a thumbnail, author details, or even a short description.

A lot is happening in the IT world. Instead of jumping from one topic to another nervously, it’s worth concentrating on one thing. Stop for a moment and identify the problems. Also, remember that there is no right way in life. One is faster, and the other is slower. Don’t be afraid to ask for help.

Elixir 1.12 introduced two very useful macros. They can be life savings helpers in your codebase. Instead of write extra functions, you can have nice logging and executing actions based on given data.

Users often do not see the dangers of a weak password. Often, they reuse the same passwords on different sites to make their daily lives easier. Security is one of the critical aspects of any project. With Have I Been Pwned? it is possible to check passwords based on various leaks.

Start from understanding the needs and point of view of the organization. Take care of good communication with customers. Don’t be afraid to develop both technical and soft skills. You will have a lot of battles at work. Choose wisely what you can engage in, given your limited time capacity. Act locally, think globally to change the project in small steps. Use non-hanging fruit to be successful and avoid burnout.

In my opinion, the best investment is our development. It allows us to achieve better results, receives promotions, and increase our remuneration. By investing in ourselves, we invest in our future. You didn’t know everything (and you still don’t know everything). It is worth trying to help others and learning at the same time.

Understanding the business is critical. It allows you to achieve better results in a shorter time. Don’t try to be an expert right away. Learn and don’t be afraid to ask when something is unclear. A common language is an opportunity for discussion with the client.

Automated testing can unburden Quality Assurance teams from the monotonous manual review of every change. They can also be a great acceleration for programmers. But they won’t make your organization or product great overnight. It would help if you had people’s support, a clear plan, and an understanding of expectations.

The more time we have to do the job (especially in the office), the longer it takes. Work complicates to fill the available time. Check out Parkinson’s Law and understand why!

Everything around us makes us concentrate on what is available immediately and instantly. Short-term gains and results are much more appreciated than long-term with much better results. Long-term thinking and acting following this thought is the key to a peaceful life on your own terms.

Have you wondered about the nature of technology? Technology is neither good nor bad, nor is it neutral. The invention is the mother of necessity. The same technology may have completely different results. New needs, as well as new technical possibilities, make the impossible possible.

Don’t be afraid to make mistakes. Even the best programmers make mistakes. However, minimize their impact and react quickly to the most critical problems. It is much better to make mistakes but fix them quickly than to delay the development phase and not provide functionality.

Have you ever wondered what the Internet might look like in the future? With the Wayforward Machine, we can move into the future to see how the Internet has dealt with the problem of advertising, user tracking, paywall, and all kinds of cybersecurity problems.

Code review can be an opportunity to sharing knowledge. Finding errors is a side effect of the entire code review process. Thanks to code review, you can promote one standard style of changes to the entire team. Don’t be afraid to ask if you don’t understand something.

Personal branding is not only social media and a broad group of followers on Twitter or LinkedIn. It is the opinion of others about us and our suitability for a given topic. Building personal branding is a long process.

It is not always possible to be right every time. It didn’t really matter who’s the solution was chosen. What counts for the customer is a well-implemented project that meets his expectations.

Companies often create strategy plans called roadmaps. In the case of a personal roadmap, the plan is for a specific person - you. It can be a great way to achieve your goals and expectations.

Knowledge sharing can be a great way to grow faster. It’s also an excellent opportunity to build the image of the expert. There will always be someone we can help. Our knowledge can be helpful and a huge step in personal development.

The New Year is an occasion for new resolutions. Most often, they are only for a while. What influences our resignation? What should we do to increase our loyalty?

When I’m developing outside of working time, I like to collect addresses of visited websites. After a long time of collecting it by hand, I decided to change something. With Chrome Extension, I can do it automatically!

We spend most of our life at work. Work should not be a place where we are forced to go. Have you considered the enemies of our work? Blame culture, ego, responsibilities - these are only some of the topics worth paying attention to.

Harvard CS50 - probably the best free introductory programming course you can find. What does it offer, and why is it worth it? An excellent introduction to C and Python languages, data allocation, pointers, heap, and many others concepts.

I love podcasts because they can change a lot in our lives. Recently I was analyzing one, and I would like to share something that seems extremely important to me.

Recently I came across the topic of learning and documenting progress. Sharing our development with others can be done in many ways. I want to share my opinion about the advantages I see.

Software development is often a test creation process. To achieve success, it is worth considering what features good tests have. Well-written tests should document the implemented functionality and check the tested function well.

Layoffs have accelerated significantly this year. These layoffs affect the entire tech industry. The same problems can be observed both in the USA and in Europe.

Refactoring should be an integral part of a developer’s day. Systematic refactoring allows for reducing the process of self-degradation of the project. This change makes our code easier to understand and cheaper to maintain.

Being promoted from Programmer to Team Leader is not unusual. Should Team Lead continue to code? Managing people becomes your job, among other things. You do not have to stop coding completely. Unfortunately, it will be less than before.

It is one of the few “things” that will ultimately happen to everyone. How well are you using your life? Do you like your job and the people you work with? Instead of postponing it, just start acting!

GitHub offers a great opportunity to create our card for everyone visiting our profile. Best of all, even this card uses a version control system.

Every change is hard. Before making changes, get to know yourself from the best side. Try to understand it as quickly as possible, at least in general terms.

The initial solution we wanted to apply may turn out to be insufficient. Try to provide as much helpful information as possible. Make sure you understand all the requirements well. Don’t be afraid that something will go wrong. Failure isn’t fatal, but failure to change might be.

The Twelve-Factor App methodology is a methodology for building software-as-a-service applications. It allows you to eliminate the most common problems with our applications. Some of them have already become the industry standard, so you should get to know them all. The methodology constitutes design guidelines strongly focused on cloud-native, portable, and resilient applications.

Selling is not an easy job. The customers don’t care about you. What matters is how you can solve their problems. People often recommend and buy from people they know well, like, and trust. See how to use the KLT principle in your business.

Freedom of choice is often the biggest curse. Sometimes the basics are enough, and the rest is just an addition. Don’t overcomplicate, don’t add maintenance, and keep it simple to be less sensitive.

Feeling overwhelmed by work is quite a common feeling. Especially if we work on the project for a long time. Good planning can make your work more pleasant and simplified. You don’t have to complete all tasks (alone). Some tasks can even be removed. With the Eisenhower matrix you can manage your priorities.

Error handling is an integral part of any project. However, only a few can do it well. What makes an error message good? Take care of the language of the message, its length and indicate how to mitigate errors. Have automatic bug reporting tools to quickly respond to system problems.

A lot is happening in the IT world. Instead of jumping from one topic to another nervously, it’s worth concentrating on one thing. Stop for a moment and identify the problems. Also, remember that there is no right way in life. One is faster, and the other is slower. Don’t be afraid to ask for help.

Users often do not see the dangers of a weak password. Often, they reuse the same passwords on different sites to make their daily lives easier. Security is one of the critical aspects of any project. With Have I Been Pwned? it is possible to check passwords based on various leaks.

Start from understanding the needs and point of view of the organization. Take care of good communication with customers. Don’t be afraid to develop both technical and soft skills. You will have a lot of battles at work. Choose wisely what you can engage in, given your limited time capacity. Act locally, think globally to change the project in small steps. Use non-hanging fruit to be successful and avoid burnout.

In my opinion, the best investment is our development. It allows us to achieve better results, receives promotions, and increase our remuneration. By investing in ourselves, we invest in our future. You didn’t know everything (and you still don’t know everything). It is worth trying to help others and learning at the same time.

Understanding the business is critical. It allows you to achieve better results in a shorter time. Don’t try to be an expert right away. Learn and don’t be afraid to ask when something is unclear. A common language is an opportunity for discussion with the client.

Automated testing can unburden Quality Assurance teams from the monotonous manual review of every change. They can also be a great acceleration for programmers. But they won’t make your organization or product great overnight. It would help if you had people’s support, a clear plan, and an understanding of expectations.

The more time we have to do the job (especially in the office), the longer it takes. Work complicates to fill the available time. Check out Parkinson’s Law and understand why!

Everything around us makes us concentrate on what is available immediately and instantly. Short-term gains and results are much more appreciated than long-term with much better results. Long-term thinking and acting following this thought is the key to a peaceful life on your own terms.

A good recruitment process starts with a personalized message selected for a specific candidate. Worth mentioning which technologies are used in the project. Try to keep the first conversations short but very meaningful so that neither party feels like wasting their time.

Personal branding is not only social media and a broad group of followers on Twitter or LinkedIn. It is the opinion of others about us and our suitability for a given topic. Building personal branding is a long process.

Instead of focusing solely on our business, we should try to understand the client’s expectations. Your client’s success is your success. A satisfied customer is our primary source of recommendations. Treat others as you would like others to treat you.

We expect our estimates will have a positive impact on the implementation. The most significant value of the estimation is not the value itself. It is a better understanding of the project, and a consistent view of the tasks carried out.

GitHub Copilot tries to understand the programmer’s intentions and generate the code closest to the expectations. Aside from generating code, understanding the programmer’s intentions can be a much bigger problem. The use of the code created by this tool remains controversial.

Developers and business misunderstand the concept of technical debt. Building on weak foundations can result in losses and risks to your business. Instead of talking about debt, we should talk about missed opportunities.

Taking notes and summaries of meetings can provide a better engagement in discussions. Notes can also be a source of truth and a good reference while working. Do it on paper or immediately digitally, depending on your preferences.

Since you can’t manage time, let’s try to manage yourself in time. Avoid multitasking, focus on one activity, and try to do the best you can. Group tasks into blocks to reduce context switching. Remember that meetings can be tiring.

Time can be the best gift our loved ones can receive. It’s you who gets to live your one and only life. Don’t let people who won’t ever live with the consequences of your choices determine how you spend your time.

You don’t want to postpone tasks? The best way is to change your approach and set the time window for the project. Instead of dividing up into tasks and thinking about everything right away, you can accomplish as much as you can.

The New Year is an occasion for new resolutions. Most often, they are only for a while. What influences our resignation? What should we do to increase our loyalty?

When I’m developing outside of working time, I like to collect addresses of visited websites. After a long time of collecting it by hand, I decided to change something. With Chrome Extension, I can do it automatically!

We spend most of our life at work. Work should not be a place where we are forced to go. Have you considered the enemies of our work? Blame culture, ego, responsibilities - these are only some of the topics worth paying attention to.

I love podcasts because they can change a lot in our lives. Recently I was analyzing one, and I would like to share something that seems extremely important to me.

Recently I came across the topic of learning and documenting progress. Sharing our development with others can be done in many ways. I want to share my opinion about the advantages I see.

Remote work, productivity, and time management are important topics. I want to explore the topic of increasing productivity while working from home. Check out my way of better commitment and the opportunity to focus on work duties.

No project is perfect from the start. The real problems are very complicated. While something seems simple and fits perfectly, it may not be. I want to present the most critical and unchanging aspect of each project.

A blog is a great way to learn from your past. You can be your own teacher. Let me show you why I started my blog.

Companies operate in an uncertain environment. Uncertain technology is certainly not something that will interest them. What makes companies decide to use Elixir language?

Most of us have moved from working in the office to working from home. For most, this was a new and unexpected situation. Reflecting on the topic of remote work, I wanted to prepare a list of activities that will allow us to avoid lack of concentration, constant monotony, and being at work 24 hours a day.

The latest changes to the Inspect protocol can help you change the way data is presented. With the new optional option, you can only indicate information when the data has changed.

Software development is often a test creation process. To achieve success, it is worth considering what features good tests have. Well-written tests should document the implemented functionality and check the tested function well.

I introduced the possibility of commenting on posts directly on the page. With giscus, we can use Discussions on GitHub to store comments. In this simple way, you can add comments to your Jekyll blog!

In programming, we often need fairly distribution of data. Using phash2 we can get the same hash for the same Erlang term regardless of machine architecture and ERTS version. This fast function should always be used for hashing any data and limiting the result to a range of integers.

Refactoring should be an integral part of a developer’s day. Systematic refactoring allows for reducing the process of self-degradation of the project. This change makes our code easier to understand and cheaper to maintain.

In Elixir, regular expressions can extract a lot of useful information. Using Regex and named_captures/3 function, we can parse the input data based on the prepared regex.

It is one of the few “things” that will ultimately happen to everyone. How well are you using your life? Do you like your job and the people you work with? Instead of postponing it, just start acting!

GitHub offers a great opportunity to create our card for everyone visiting our profile. Best of all, even this card uses a version control system.

Debugging Elixir code has become even more accessible thanks to the dbg function. Thanks to the latest version, your work may become more pleasant and the search for errors even easier. Check how to apply new possibilities in your code. A simple one-line can facilitate your error analysis.

Special functions are used to compare dates. With it, you can prepare a comparison based on semantics. Simple functions can solve your problems with incorrect results.

Every change is hard. Before making changes, get to know yourself from the best side. Try to understand it as quickly as possible, at least in general terms.

Safe passwords are a very important aspect of application security. How can you check if the password has not been used before? Compare passwords in Elixir thanks to Bcrypt.

The initial solution we wanted to apply may turn out to be insufficient. Try to provide as much helpful information as possible. Make sure you understand all the requirements well. Don’t be afraid that something will go wrong. Failure isn’t fatal, but failure to change might be.

Sometimes our application collects more logs than we would expect. Especially in the case of endpoints responsible for the server status. Thanks to a simple plug, you can inform about the system state all the time without logging this request.

The Twelve-Factor App methodology is a methodology for building software-as-a-service applications. It allows you to eliminate the most common problems with our applications. Some of them have already become the industry standard, so you should get to know them all. The methodology constitutes design guidelines strongly focused on cloud-native, portable, and resilient applications.

Selling is not an easy job. The customers don’t care about you. What matters is how you can solve their problems. People often recommend and buy from people they know well, like, and trust. See how to use the KLT principle in your business.

The temporary directory for data storage is often used. However, /tmp dir is not always a good solution. Depending on the configuration, it can be represented differently. Check how you can fix it with simple modification.

Freedom of choice is often the biggest curse. Sometimes the basics are enough, and the rest is just an addition. Don’t overcomplicate, don’t add maintenance, and keep it simple to be less sensitive.

Sending a message to yourself as a process is an easy way to schedule an action to retry. However, it is not always necessary to send this message. Find out how easy it is to cancel a scheduled message.

When connecting to the server with SSH, you may need to use a certificate other than the default one. Additionally, often the username is also more complicated. How do you remember it all? Special configuration file that will help us solve the problem.

Protecting confidential data is a daily task. Thanks to a good web browser, a strong password, and other security measures, you can mitigate the risk of your identity being stolen. Use this personal security checklist to be even more secure!

Guards are a great way to check data limits. They are safe and can make the everyday work with the project more pleasant and, at the same time, limit the duplicated code. And it’s all in pattern matching!

JSON Web Tokens known as JWT, are a great way to ensure security in communication between system parts. Remember not to trust the user and verify the data before use. JWT contains a lot of information about the user and his permissions. It is also a well-thought-out structure. It indicates in an accessible way for whom and by whom the token was prepared. Also, check out the topic of key rotation and its benefits.

Feeling overwhelmed by work is quite a common feeling. Especially if we work on the project for a long time. Good planning can make your work more pleasant and simplified. You don’t have to complete all tasks (alone). Some tasks can even be removed. With the Eisenhower matrix you can manage your priorities.

Error handling is an integral part of any project. However, only a few can do it well. What makes an error message good? Take care of the language of the message, its length and indicate how to mitigate errors. Have automatic bug reporting tools to quickly respond to system problems.

I would like to present some useful tricks to speed up your work. Elixir’s interactive shell is a great tool to make your work comfortable. You don’t need to use a browser to check function errors. You have everything available in the console!

One of the advantages of Elixir is its openness. You can get more readable code with the command wrapped in tuple. You don’t need to modify the response from functions itself.

The presentation of extra details about your website is straightforward. All you need to do is use Open Graph protocol. Any web page can become a rich object in a social graph. You can use it to show a thumbnail, author details, or even a short description.

You can use Ecto to check any information from the user. Extra, we have another layer of security. Only the supported parameters are passed to the domain layer. Using Ecto to verify parameters from the user is not difficult and can be part of your API verification pipeline.

A lot is happening in the IT world. Instead of jumping from one topic to another nervously, it’s worth concentrating on one thing. Stop for a moment and identify the problems. Also, remember that there is no right way in life. One is faster, and the other is slower. Don’t be afraid to ask for help.

Elixir 1.12 introduced two very useful macros. They can be life savings helpers in your codebase. Instead of write extra functions, you can have nice logging and executing actions based on given data.

Not so long ago, to release the application, it was necessary to modify the binary files on the servers. Thanks to good DevOps practices, the entire process can be changed. It is possible to achieve tens or hundreds of releases each day. Everything without the downtime of the application.

Start from understanding the needs and point of view of the organization. Take care of good communication with customers. Don’t be afraid to develop both technical and soft skills. You will have a lot of battles at work. Choose wisely what you can engage in, given your limited time capacity. Act locally, think globally to change the project in small steps. Use non-hanging fruit to be successful and avoid burnout.

In my opinion, the best investment is our development. It allows us to achieve better results, receives promotions, and increase our remuneration. By investing in ourselves, we invest in our future. You didn’t know everything (and you still don’t know everything). It is worth trying to help others and learning at the same time.

Many applications introduce some kind of status to make it easier to share data. However, more and more modules in your codebase need to be explicit about these assumptions. Views can eliminate the problematic SQL query. It’s also great way to introduce well-defined entities.

Let’s check what has changed in the latest version of Elixir. Most interesting, from my perspective, will be improving compilation time. However, that’s not all! New map support, information logging level and changes inside Inspect are waiting for you.

What if a dependency is no longer needed? One library less is potentially one place of conflict between different versions of dependencies less. You can do it with one command, and clear your lock file.

You may be surprised, but the behavior of the popular inspect can be easily modified. Maybe it will make your daily work easier and make it a bit more comfortable.

Everything around us makes us concentrate on what is available immediately and instantly. Short-term gains and results are much more appreciated than long-term with much better results. Long-term thinking and acting following this thought is the key to a peaceful life on your own terms.

The latest changes to the Inspect protocol can help you change the way data is presented. With the new optional option, you can only indicate information when the data has changed.

I introduced the possibility of commenting on posts directly on the page. With giscus, we can use Discussions on GitHub to store comments. In this simple way, you can add comments to your Jekyll blog!

In programming, we often need fairly distribution of data. Using phash2 we can get the same hash for the same Erlang term regardless of machine architecture and ERTS version. This fast function should always be used for hashing any data and limiting the result to a range of integers.

In Elixir, regular expressions can extract a lot of useful information. Using Regex and named_captures/3 function, we can parse the input data based on the prepared regex.

Debugging Elixir code has become even more accessible thanks to the dbg function. Thanks to the latest version, your work may become more pleasant and the search for errors even easier. Check how to apply new possibilities in your code. A simple one-line can facilitate your error analysis.

Special functions are used to compare dates. With it, you can prepare a comparison based on semantics. Simple functions can solve your problems with incorrect results.

Safe passwords are a very important aspect of application security. How can you check if the password has not been used before? Compare passwords in Elixir thanks to Bcrypt.

Sometimes our application collects more logs than we would expect. Especially in the case of endpoints responsible for the server status. Thanks to a simple plug, you can inform about the system state all the time without logging this request.

The temporary directory for data storage is often used. However, /tmp dir is not always a good solution. Depending on the configuration, it can be represented differently. Check how you can fix it with simple modification.

Sending a message to yourself as a process is an easy way to schedule an action to retry. However, it is not always necessary to send this message. Find out how easy it is to cancel a scheduled message.

When connecting to the server with SSH, you may need to use a certificate other than the default one. Additionally, often the username is also more complicated. How do you remember it all? Special configuration file that will help us solve the problem.

Guards are a great way to check data limits. They are safe and can make the everyday work with the project more pleasant and, at the same time, limit the duplicated code. And it’s all in pattern matching!

One of the possible vectors of an attack on the system is the disclosure of the used keys, certificates, or other access data. I found TruffleHog as a tool to verify your project. The tool can scan projects on GitHub or GitLab, including entire organizations! You can attach them to your CI/CD pipeline to verify that no confidential information has been published.

I would like to present some useful tricks to speed up your work. Elixir’s interactive shell is a great tool to make your work comfortable. You don’t need to use a browser to check function errors. You have everything available in the console!

One of the advantages of Elixir is its openness. You can get more readable code with the command wrapped in tuple. You don’t need to modify the response from functions itself.

The presentation of extra details about your website is straightforward. All you need to do is use Open Graph protocol. Any web page can become a rich object in a social graph. You can use it to show a thumbnail, author details, or even a short description.

You can use Ecto to check any information from the user. Extra, we have another layer of security. Only the supported parameters are passed to the domain layer. Using Ecto to verify parameters from the user is not difficult and can be part of your API verification pipeline.

Elixir 1.12 introduced two very useful macros. They can be life savings helpers in your codebase. Instead of write extra functions, you can have nice logging and executing actions based on given data.

Ecto Schema is very easy to adapt to our needs. Besides changing the type of the primary key, you can also change the type and names of the fields created by the timestamps() macro.

Many applications introduce some kind of status to make it easier to share data. However, more and more modules in your codebase need to be explicit about these assumptions. Views can eliminate the problematic SQL query. It’s also great way to introduce well-defined entities.

Understanding exactly what SQL commands are running is helpful to ensure safe migrations. By default, Ecto does not log the raw SQL. However, we can change it.

Let’s check what has changed in the latest version of Elixir. Most interesting, from my perspective, will be improving compilation time. However, that’s not all! New map support, information logging level and changes inside Inspect are waiting for you.

What if a dependency is no longer needed? One library less is potentially one place of conflict between different versions of dependencies less. You can do it with one command, and clear your lock file.

You may be surprised, but the behavior of the popular inspect can be easily modified. Maybe it will make your daily work easier and make it a bit more comfortable.

A simple example of how to introduce a Universally unique identifier (UUID) into your project. You just need to remember a small modification in the migration and the column type change.

Positional bindings can be problematic due to the order when building large queries with many different functions. Named bindings can be of great help in our challenges. It is not necessary to know the position to be able to refer to the variable. Creating reusable and maintainable queries doesn’t have to be complicated.

We have a new version of the most popular Elixir framework - Phoenix framework. New generators, fixes and improvements are now available. Find out more about the new HEEx engine.

Try to use setup_all to prepare the data once and re-use it in tests. Use tags to have a better context and be able to exclude some tests. Prepare a processing pipeline to check the quick tests first, and when they do not fail, take care of the more time-demanding tests.

The macro Ecto Query dynamic/2 allows you to build query fragments and interpolate them into one large query. We get easy-to-manage query building in an accessible way. It allows you to control the parameters from the user and transparently create filtering of data stored in the database.

We don’t touch the code in our projects with equal frequency. The tool for automatically discovering candidates comes in handy by identifying the most frequently modified files with high cyclomatic complexity. Then we can focus on these files and make changes to work with better codebase.

The Elixir 1.12 version introduced some significant changes. The main one is the ability to create scripts and import dependencies via Mix.install. The interactive console can be more helpful in the software development, prototyping and debugging processes.

The datasets can be too large to handle entirely in-memory, but we should do the processing. With Ecto.Repo.stream/1 we can process it in batches. Tested in practice solution can come in handy when dealing with CSV export, updating indexes, and much more.

Two ways of handling enumerables dominate Elixir language. Seemingly very similar to each other, offering a matching set of possibilities, but they behave entirely differently.

When I’m developing outside of working time, I like to collect addresses of visited websites. After a long time of collecting it by hand, I decided to change something. With Chrome Extension, I can do it automatically!

Most of our projects use databases. We often do not realize that incorrectly used functionality may block our applications. Simple changes can save us from unpleasant consequences.

We have some environmental variables in almost every Elixir application. They change the behavior of the system. They even allow you to reduce variables to be hard-coded somewhere in the depths of the code. I will show how you can use environment variables better.

Based on Erlang VM, Elixir is often limited by a virtual machine’s capabilities or the language itself. One such limitation manifests itself in weak optimization of System.get_env/0 function.

Most of the projects collect a lot of data. It usually means a heavy loads on the database. What can we do to provide better request handling and lower access times? See how to introduce TimescaleDB to the project using Ecto.

The latest changes to the Inspect protocol can help you change the way data is presented. With the new optional option, you can only indicate information when the data has changed.

In programming, we often need fairly distribution of data. Using phash2 we can get the same hash for the same Erlang term regardless of machine architecture and ERTS version. This fast function should always be used for hashing any data and limiting the result to a range of integers.

Ecto uses SHARE UPDATE EXCLUSIVE lock to ensure that only one instance is running a migration at a time and only once. Internally stored version and inserted at allows you to modify and improve created files.

In Elixir, regular expressions can extract a lot of useful information. Using Regex and named_captures/3 function, we can parse the input data based on the prepared regex.

Debugging Elixir code has become even more accessible thanks to the dbg function. Thanks to the latest version, your work may become more pleasant and the search for errors even easier. Check how to apply new possibilities in your code. A simple one-line can facilitate your error analysis.

Special functions are used to compare dates. With it, you can prepare a comparison based on semantics. Simple functions can solve your problems with incorrect results.

Safe passwords are a very important aspect of application security. How can you check if the password has not been used before? Compare passwords in Elixir thanks to Bcrypt.

Sometimes our application collects more logs than we would expect. Especially in the case of endpoints responsible for the server status. Thanks to a simple plug, you can inform about the system state all the time without logging this request.

The temporary directory for data storage is often used. However, /tmp dir is not always a good solution. Depending on the configuration, it can be represented differently. Check how you can fix it with simple modification.

Sending a message to yourself as a process is an easy way to schedule an action to retry. However, it is not always necessary to send this message. Find out how easy it is to cancel a scheduled message.

Guards are a great way to check data limits. They are safe and can make the everyday work with the project more pleasant and, at the same time, limit the duplicated code. And it’s all in pattern matching!

I would like to present some useful tricks to speed up your work. Elixir’s interactive shell is a great tool to make your work comfortable. You don’t need to use a browser to check function errors. You have everything available in the console!

One of the advantages of Elixir is its openness. You can get more readable code with the command wrapped in tuple. You don’t need to modify the response from functions itself.

You can use Ecto to check any information from the user. Extra, we have another layer of security. Only the supported parameters are passed to the domain layer. Using Ecto to verify parameters from the user is not difficult and can be part of your API verification pipeline.

Elixir 1.12 introduced two very useful macros. They can be life savings helpers in your codebase. Instead of write extra functions, you can have nice logging and executing actions based on given data.

Ecto Schema is very easy to adapt to our needs. Besides changing the type of the primary key, you can also change the type and names of the fields created by the timestamps() macro.

Many applications introduce some kind of status to make it easier to share data. However, more and more modules in your codebase need to be explicit about these assumptions. Views can eliminate the problematic SQL query. It’s also great way to introduce well-defined entities.

Understanding exactly what SQL commands are running is helpful to ensure safe migrations. By default, Ecto does not log the raw SQL. However, we can change it.

Let’s check what has changed in the latest version of Elixir. Most interesting, from my perspective, will be improving compilation time. However, that’s not all! New map support, information logging level and changes inside Inspect are waiting for you.

What if a dependency is no longer needed? One library less is potentially one place of conflict between different versions of dependencies less. You can do it with one command, and clear your lock file.

You may be surprised, but the behavior of the popular inspect can be easily modified. Maybe it will make your daily work easier and make it a bit more comfortable.

A simple example of how to introduce a Universally unique identifier (UUID) into your project. You just need to remember a small modification in the migration and the column type change.

Positional bindings can be problematic due to the order when building large queries with many different functions. Named bindings can be of great help in our challenges. It is not necessary to know the position to be able to refer to the variable. Creating reusable and maintainable queries doesn’t have to be complicated.

We have a new version of the most popular Elixir framework - Phoenix framework. New generators, fixes and improvements are now available. Find out more about the new HEEx engine.

Try to use setup_all to prepare the data once and re-use it in tests. Use tags to have a better context and be able to exclude some tests. Prepare a processing pipeline to check the quick tests first, and when they do not fail, take care of the more time-demanding tests.

The macro Ecto Query dynamic/2 allows you to build query fragments and interpolate them into one large query. We get easy-to-manage query building in an accessible way. It allows you to control the parameters from the user and transparently create filtering of data stored in the database.

We don’t touch the code in our projects with equal frequency. The tool for automatically discovering candidates comes in handy by identifying the most frequently modified files with high cyclomatic complexity. Then we can focus on these files and make changes to work with better codebase.

The Elixir 1.12 version introduced some significant changes. The main one is the ability to create scripts and import dependencies via Mix.install. The interactive console can be more helpful in the software development, prototyping and debugging processes.

The datasets can be too large to handle entirely in-memory, but we should do the processing. With Ecto.Repo.stream/1 we can process it in batches. Tested in practice solution can come in handy when dealing with CSV export, updating indexes, and much more.

Two ways of handling enumerables dominate Elixir language. Seemingly very similar to each other, offering a matching set of possibilities, but they behave entirely differently.

Most of our projects use databases. We often do not realize that incorrectly used functionality may block our applications. Simple changes can save us from unpleasant consequences.

Companies operate in an uncertain environment. Uncertain technology is certainly not something that will interest them. What makes companies decide to use Elixir language?

We have some environmental variables in almost every Elixir application. They change the behavior of the system. They even allow you to reduce variables to be hard-coded somewhere in the depths of the code. I will show how you can use environment variables better.

Based on Erlang VM, Elixir is often limited by a virtual machine’s capabilities or the language itself. One such limitation manifests itself in weak optimization of System.get_env/0 function.

Most of the projects collect a lot of data. It usually means a heavy loads on the database. What can we do to provide better request handling and lower access times? See how to introduce TimescaleDB to the project using Ecto.

When you start your adventure with Elixir, you may wonder where to get the knowledge. In this article, I have prepared a list of books that may help you become an Elixir programmer or improve your career. This list has been split into different levels of skill.

Software development is often a test creation process. To achieve success, it is worth considering what features good tests have. Well-written tests should document the implemented functionality and check the tested function well.

Layoffs have accelerated significantly this year. These layoffs affect the entire tech industry. The same problems can be observed both in the USA and in Europe.

Refactoring should be an integral part of a developer’s day. Systematic refactoring allows for reducing the process of self-degradation of the project. This change makes our code easier to understand and cheaper to maintain.

Being promoted from Programmer to Team Leader is not unusual. Should Team Lead continue to code? Managing people becomes your job, among other things. You do not have to stop coding completely. Unfortunately, it will be less than before.

It is one of the few “things” that will ultimately happen to everyone. How well are you using your life? Do you like your job and the people you work with? Instead of postponing it, just start acting!

Every change is hard. Before making changes, get to know yourself from the best side. Try to understand it as quickly as possible, at least in general terms.

The initial solution we wanted to apply may turn out to be insufficient. Try to provide as much helpful information as possible. Make sure you understand all the requirements well. Don’t be afraid that something will go wrong. Failure isn’t fatal, but failure to change might be.

The Twelve-Factor App methodology is a methodology for building software-as-a-service applications. It allows you to eliminate the most common problems with our applications. Some of them have already become the industry standard, so you should get to know them all. The methodology constitutes design guidelines strongly focused on cloud-native, portable, and resilient applications.

Freedom of choice is often the biggest curse. Sometimes the basics are enough, and the rest is just an addition. Don’t overcomplicate, don’t add maintenance, and keep it simple to be less sensitive.

When connecting to the server with SSH, you may need to use a certificate other than the default one. Additionally, often the username is also more complicated. How do you remember it all? Special configuration file that will help us solve the problem.

JSON Web Tokens known as JWT, are a great way to ensure security in communication between system parts. Remember not to trust the user and verify the data before use. JWT contains a lot of information about the user and his permissions. It is also a well-thought-out structure. It indicates in an accessible way for whom and by whom the token was prepared. Also, check out the topic of key rotation and its benefits.

Feeling overwhelmed by work is quite a common feeling. Especially if we work on the project for a long time. Good planning can make your work more pleasant and simplified. You don’t have to complete all tasks (alone). Some tasks can even be removed. With the Eisenhower matrix you can manage your priorities.

Error handling is an integral part of any project. However, only a few can do it well. What makes an error message good? Take care of the language of the message, its length and indicate how to mitigate errors. Have automatic bug reporting tools to quickly respond to system problems.

I would like to present some useful tricks to speed up your work. Elixir’s interactive shell is a great tool to make your work comfortable. You don’t need to use a browser to check function errors. You have everything available in the console!

You can use Ecto to check any information from the user. Extra, we have another layer of security. Only the supported parameters are passed to the domain layer. Using Ecto to verify parameters from the user is not difficult and can be part of your API verification pipeline.