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Life & fun · October 16, 2015

DA

`diff arc0 arc3.1`

`diff arc0 arc3.1` launched on October 16, 2015 with 49 votes, #1,768 of 4,175 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 11 years on.

Visit cdn.rawgit.com ↗`diff arc0 arc3.1` alternatives

In plain words

This is a comparison tool showing the differences between Arc's first release and version 3.1. It documents how the language evolved through feature additions and bug fixes rather than major rewrites, demonstrating the stability of its bottom-up design approach. Arc's compiler is written in Scheme and bootstraps the language itself using minimal core features like string and list manipulation. The tool is useful for developers studying Arc's development history or understanding how the language's architecture supports its self-hosting capability.

written from the facts on this page · September 2026

From the sources

This is a comparison of the first release of Arc to the latest version. Arc's codebase is an instance of bottom-up design: much of the code in the original is still present in the latest, and the diffs are mostly feature additions and bug fixes rather than refactors or rewrites. Arc's compiler is written in Scheme, but the language itself is mostly written in Arc. This is possible because the compiler (ac.scm) provides a minimal set of basic features, like the ability to manipulate strings and lists, the ability to construct a function, and so on. Using these basic abilities, the language is able to define itself in arc.arc. It builds itself up similar to geometry: it uses the "axioms"…from cdn.rawgit.com

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