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How to make a fast dynamic language interpreter


To Make a Fast Dynamic Language Interpreter This post is about optimizing an extremely simple AST-walking interpreter for a dynamic language called Zef that I created for fun to the point where it is competitive with the likes of Lua, QuickJS, and CPython. Why? Most of what gets written about making language implementations fast focuses on the work you'd do when you already have a stable foundation, like writing yet another JIT (just in time) compiler or fine tuning an already pretty good garbage collector.

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