It's very common to have unused CSS rules on a website. Having unused CSS rules is not a good thing. It increases the size of the CSS file, so it increases the loading time. Also, it increases the time needed to parse the file by the browser, it increases the time needed to find matching rules for an element, and it increases the RAM necessary to keep the data in memory. Don't forget about green… [read more]

The C# compilers has some hidden features. Today I've discovered a new compiler option. The author of a recent issue on GitHub indicates that the C# compiler allows to compare an IntPtr with null, which at runtime is always false. He suggests the compiler should raise an error in this case. The answer of Sam Harwell describes a compiler option, /features:strict, to detect this error and a few other… [read more]

Documenting your API is very important if you want people to be able to consume it. An API documentation should contain the list of accessible endpoints (URL, method), their parameters, and the response (http status code, body). The documentation should be readable by a human, but also by a computer. The later is very useful to generate clients automatically. OpenAPI Specification is the most common way… [read more]

Using a NuGet package is a very convenient way to add a dependency to your project. However, when you have an issue with a NuGet package and you want to debug it, it's hard because you don't have the source code. Lots of NuGet packages have their source code on GitHub, so it would be very convenient to automatically get the code from the GitHub repository. This is what SourceLink provides. It adds some… [read more]

As a user, it's hard to explain an issue you have with a software. How to explain the problem to a developer who isn't next to you? A developer needs to know exactly how to reproduce your issue and fix it. As a developer, you know the users are not very good to explain their problems and you have to deal with incomplete explainations, so you have to guess a few steps. Problem Steps Recorder (PSR) is a… [read more]

Every company/team has its own coding style. The coding style is about naming, spacing, or language feature usages. Do you use tabs or spaces, and how many spaces? Do you use PascalCase or camelCase? Do you prefix field names with _? Do you always use var or only when the type is visible? And a few more questions in that vein… In an open/inner source project, you want to ensure every contributor uses your… [read more]

Here's the configuration of my developer machine. I'm a .NET and web developper, so only the software relevant to these technologies are part of the list. I also add a few tools I use everyday, but are not directly related to dev. I'm sure I forgot some of the tools I used regularly. If you think I should add something (software/extension/configuration/services), feel free to comment. Web browsers Opera… [read more]

People doing web development are used to install tools using npm. For instance, you can install TypeScript using npm install -g TypeScript. Then you can use TypeScript directly from the command line. This is very convenient. .NET Core 2.1 allows to create tools that can be install the same way as nodejs. This feature provides a simple way to create and share cross-platform console tools. .NET tools are… [read more]

Crash dumps are very useful to debug an application. Recently, I worked on a Visual Studio extension we use in my company. It's very easy to develop such kind of application. However, there are lots of reasons for your extension to crash. Of course you can add lots of try/catch, but you'll for sure forget the good one, so VS will crash. When it's happening, you would like to be able to attach a debugger… [read more]

The DOM api allows to manipulate the html document in a browser. It's simple to use, but the code is not very readable. Here's the code needed to create 2 elements and set an attribute: function foo() { let div = document.createElement("div"); let anchor = document.createElement("a"); anchor.href = "https://www.meziantou.net"; div.appendChild(anchor); … [read more]