https://lab.artur-rios.tech/tags/jit/Recent content in JIT on Artur Rios LabHugoen-usWed, 21 Oct 2026 12:30:00 +0000https://lab.artur-rios.tech/dotnet/compilation-and-execution/Wed, 21 Oct 2026 12:30:00 +0000https://lab.artur-rios.tech/dotnet/compilation-and-execution/<p>A C# program is not compiled straight to machine code, and it is not interpreted either. It is compiled <strong>twice</strong>. When you build, the C# compiler turns source code into an intermediate language and a description of every type, packed into an assembly, a <code>.dll</code> file. When you run, the .NET runtime turns that intermediate language into machine code for the CPU it is running on, usually one method at a time and often more than once as it learns which code is hot.</p>