Proxy: Next Generation Polymorphism in C++
Manifold is a Java compiler plugin, its features include Metaprogramming, Properties, Extension Methods, Operator Overloading, Templates, a Preprocessor, and more.
翻译 - Manifold插入Java以补充其强大的功能，从类型安全的元编程，扩展方法，运算符重载和单元表达式到集成的模板引擎和预处理器。 IntelliJ IDEA中完全支持所有功能。只需将Manifold添加到您的项目并开始利用它。
Tasty, versatile, nutritious; goes with many things in .net.
Runtime duck type checking utilities for TypeScript.
A New, Interactive Approach to Learning Ruby
Zen is a general purpose programming language designed to build simple, reliable and efficient programs.
Duck-Typed Programming in C
Useful stuff missing from .NET for example duck typing, CSP channels, caching, money, typed ids...
Interpreter for old Elara specification, written in Go
🦆 Better read-only Protocols for mypy
A minimalist runtime type checking utility for duck typing
A collection of tools to enforce duck typing based interfaces in Ruby.
Helena is a minimalist programming language inspired by Tcl, Unix shells, and the Unix philosophy in general
👊 Human-readable, fast and boilerplate-free contract programming (precondition checks) for JavaScript.
A macro to generate constructor to instanicate structs from JsValue using duck-typing.
Zero-dependencies light-weight library for modeling, validating and sanitizing data 🦆 🐵 👁