Because it's a statically typed language it's all in the IDE. Almost everyone who uses C# doesn't need to check the documentation for that kind of information,

Because it's a statically typed language it's all in the IDE. Almost everyone who uses C# doesn't need to check the documentation for that kind of information, it comes up when you're typing, or it's an ctrl-space away if your caret is on a method, or you can right-click go to definition. You can pretty much right click on anything and go to definition, which will show you all the method signatures and return types of everything. My only beef with the documentation is that they show examples of the code in use, but annoyingly never the output. So, for example, it's never clear even from the examples in the documentation whether a directory path or a URL includes a trailing slash or not. And because there's no REPL, you have to either build/compile/run or use an external program (I used to use some LINQ tester program that was basically a REPL, but it's contextually almost as expensive as simply trying it in an existing program).