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Crystal is a programming language with syntax and semantics similar to Ruby but with the speed of C. It uses type inference and does not require type annotations on parameters, properties, or return types. Crystal's compiler statically analyzes code for errors and optimizations while producing efficient native code via LLVM. This open-source language supports object-oriented programming paradigms such as inheritance and polymorphism. With an emphasis on developer productivity, Crystal provides standard library modules for web development, file management, JSON parsing, cryptographic tasks and other functions commonly required by developers while maintaining a focus on performance at run-time.

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