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AltFLang

AltFLang Playground

● No syntax errors

How the AltFLang playground works

  • Runs in your browser. The lexer, parser and interpreter are plain JavaScript — no server, no sign-up. Your code autosaves locally.
  • Input for pucho(). Type answers in the Input tab, one per line, and each pucho() call reads the next one.
  • See the JavaScript. The JavaScript tab shows what your AltFLang program means in plain JS — handy when you move on to a mainstream language.
  • Share and download. Copy a link that contains your code, or save it as a .altf file and open it again later.

New to the language? Start with the lessons, browse the examples or read the reference.