Metaprogramming In .net < Plus · 2024 >

: A text-based template engine used to generate code files based on specific inputs.

: Introduced in C# 9, these are a modern form of generative metaprogramming that allows you to hook into the compilation process. They can inspect existing code and "generate" additional C# source files on the fly, reducing boilerplate and moving logic from runtime to compile-time.

Metaprogramming is typically used when it can significantly reduce complexity or eliminate repetitive boilerplate. Common applications include: Book Review: Metaprogramming in .NET - Neward & Associates Metaprogramming in .NET

The .NET framework provides several distinct tools for different metaprogramming scenarios:

: The DLR provides a set of services that support dynamic languages (like IronPython or IronRuby) on .NET, enabling objects to "bind" operations at runtime rather than compile-time. Code Generation Tools : : A text-based template engine used to generate

: These represent code in a tree-like data structure where each node is an expression (e.g., a method call or a binary operation). They are heavily used by LINQ providers to translate C# code into other languages like SQL.

: This is the most common entry point for most developers. It allows you to inspect assembly metadata at runtime to discover types, methods, and properties, and even invoke them dynamically. Metaprogramming is typically used when it can significantly

: A low-level technique for generating Intermediate Language (IL) directly at runtime to create brand new types and methods. Key Benefits and Use Cases