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Boo is an object oriented, statically typed programming language for the Common Language Infrastructure, with a Python-inspired syntax and a special focus on language and compiler extensibility. Features such as type inference everywhere, duck typing on demand, pattern matching and syntactic macros are just a few of the special features Boo offers, in addition to the standard features a modern CLR developer expects (classes, structs, enums, generics, extension methods, async/await and so on.)

It was designed with a strong emphasis on metaprogramming, with language-level support for macros, meta-methods, and AST-transforming attributes to do AOP-style rewriting as a part of the ordinary compile process.

Syntax Example

namespace BooSyntaxExample

class NamedClass:
    private name as string

    def constructor (name as string): = name

    def ToString():
        return name

named = NamedClass ('Say my name!')

print named


  • booc - Compile boo code to IL assemblies.
  • booi - Execute a boo script without first compiling it.
  • booish - Interactive interpreter boo shell.

Additional Information