Run code online in the browser. 44 languages supported: Assembly,ATS,Bash,C,Common Lisp,Clojure,COBOL,CoffeeScript,C++,Crystal,C#,D,Dart,Elixir,Elm,Erlang,F#,Go,Groovy,Guile,Hare,Haskell,Idris,Java,JavaScript,Julia,Kotlin,Lua,Mercury,Nim,Nix,Ocaml,Pascal,Perl,PHP,Python,Raku,Ruby,Rust,SaC,Scala,Swift,TypeScript,Zig
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Crystal is a general-purpose, object-oriented programming language. With syntax inspired by Ruby, itâs a compiled language with static type-checking. Types are resolved by an advanced type inference algorithm. Language specification # A very basic HTTP server require "http/server" server = HTTP::Server.new do |context| context.response.content_type = "text/plain" context.response.print "Hello worl
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AWS Cloud9 is no longer available to new customers. Existing customers of AWS Cloud9 can continue to use the service as normal. Learn more. AWS Cloud9 is a cloud-based integrated development environment (IDE) that lets you write, run, and debug your code with just a browser. It includes a code editor, debugger, and terminal. AWS Cloud9 comes prepackaged with essential tools for popular programming
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