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  GitHub - CDSoft/luax: luax is a Lua interpreter and REPL based on Lua 5.4, augmented with some useful packages. It is also a "compiler" that produces standalone executables from Lua scripts.

  • 28 users
  • github.com/CDSoft
  • テクノロジー
  • 2024/05/26

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  • Lua
  • github
  • Tools
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  Exploring the c4... compiler?

  • 11 users
  • registerspill.thorstenball.com
  • テクノロジー
  • 2024/05/12

  This week I found myself digging through the code of c4, an implementation of C “in four functions”, by Robert Swierczek. I remember coming across c4 when it was released ten years ago. It got me excited: hey, C in four functions, that means it’s easy to understand right? That excitement turned into “oh, I see” as soon as I scrolled through the code. c4 is dense, barely commented, and, frankly, st

  • Compiler
  • C
  • programming
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  Regular, Recursive, Restricted

  • 7 users
  • matklad.github.io
  • テクノロジー
  • 2024/06/04

  Regular, Recursive, Restricted Jun 4, 2024 A post/question about formal grammars, wherein I search for a good formalism for describing infix expressions. Problem statement: it’s hard to describe arithmetic expressions in a way that: declaratively captures the overall shape of expression, and has a clear precedence semantics Let’s start with the following grammar for arithmetic expressions: Expr =

  • Programming
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  This is why you should never use parser combinators and PEG

  • 6 users
  • safinaskar.writeas.com
  • テクノロジー
  • 2024/06/04

  Let me tell you why you should (nearly) never use PEG (parsing expression grammars). Nearly everything I will say applies to parser combinators (parsec in Haskell, nom in Rust), too. So, don't use PEG. Use CFGs (context-free grammars) instead. They are more natural. I feel that CFGs more naturally represent how we think. Thus when you have some language in your head and you try to write it down as

  • Programming