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gelisam / klister

an implementation of stuck macros
BSD 3-Clause "New" or "Revised" License
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eta-case example #242

Closed gelisam closed 3 months ago

gelisam commented 3 months ago

Demonstrating Klister's usefulness by implementing a feature which was imagined for Haskell on Twitter.

Summary by CodeRabbit

coderabbitai[bot] commented 3 months ago

Walkthrough

This change introduces the concept of eta-case in Klister, which enhances pattern matching by allowing eta-reduction of branches, similar to Haskell. This improves code conciseness and readability. The examples/eta-case.golden file provides practical examples of these transformations. Additionally, a new function eta-list-to-pair was defined in examples/eta-case.kl, replacing the previous list-to-pair.

Changes

Files Change Summary
examples/eta-case.golden Added new examples showcasing pattern matching and syntax transformations, including lists, pairs, and lambda expressions.
examples/eta-case.kl Introduced eta-case concept with associated new function eta-list-to-pair, replacing list-to-pair.

Poem

In fields of code where logic blooms,
Eta-case brings concise rooms.
With patterns clear and functions bright,
We trim the branches, pure delight.
A rabbit cheers this syntax lore,
Hopping through algorithms, we adore. 🐇✨

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gelisam commented 3 months ago

I am committing this Klister code to the repo as per the rule "the examples folder contains all the Klister code which currently exists in the world". Since this MR does not modify the Klister implementation nor the libraries, I plan to merge without review once CI passes.