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Sep 1, 2016 at 22:31
Ruby is exploring some neat optimisations, with graceful fallback in the event of functions changing:
Deoptimization Engine by shyouhei · Pull Request #1419 · ruby/ruby
Deoptimization Engine by shyouhei · Pull Request #1419 · ruby/ruby
Abstract Implemented a way to optimize ruby's executions and to revert them. The strategy is restricted so that any VM states like program counter(s) would not be affected by the modification...

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Jul 12, 2026 at 14:38
1
I'm surprised there aren't more interpreted languages with a first party type checker. Python has several good type checkers, Ruby has Sorbet, and there are others. Having zero compilation time *and* a full IDE seems like such a compelling design, at least on paper.
Dec 21, 2024 at 04:08
I've released difftastic 0.62! In this release: * Updated parsers for Bash, C, C++, C#, CSS, Go, Haskell, HTML, Java, JavaScript, JSON, Julia, Lua, Objective-C, OCaml, PHP, Python, Ruby, Scala, TOML, TypeScript and XML. * Obligatory crash fixes.
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Release 0.62.0 · Wilfred/difftastic
Release 0.62.0 · Wilfred/difftastic
Difftastic is a structural diff tool that understands syntax. See the manual to get started, and the changelog for historical changes. Diffing Improved handling of multiline strings, which could ca...
Jul 27, 2024 at 00:43
What are the most popular languages that have used an AST walker for their implementation? I know Ruby used to do this, but there must be others. (I'm interested in the lowest PL speed that users will tolerate if you have awesome features.)