classy-prelude

A typeclass-based Prelude.

https://github.com/snoyberg/classy-prelude

Version on this page:0.12.5@rev:1
LTS Haskell 24.28:1.5.0.3
Stackage Nightly 2026-01-14:1.5.0.3
Latest on Hackage:1.5.0.3

See all snapshots classy-prelude appears in

MIT licensed by Michael Snoyman
Maintained by [email protected]
This version can be pinned in stack with:classy-prelude-0.12.5@sha256:1fe6e744af5dc55f40b3f997c0194611054b3f0eed244292dda80fc0d86f94cc,2354

Module documentation for 0.12.5

Modern best practices without name collisions. No partial functions are exposed, but modern data structures are, without requiring import lists. Qualified modules also are not needed: instead operations are based on type-classes from the mono-traversable package.

Changes

0.12.5

  • Expose Alternative and optional

0.12.4

  • Expose traverse_ and for_

0.12.3

  • mono-traversable-0.9.3 support

0.12.2

add errorM, terrorM, and terror

0.12.0

  • Drop system-filepath

0.11.1.1

  • Compatibility with time >= 1.5 #100

0.11.1

  • Fix deprecation warnings for elem

0.11.0

  • Upgrade to mutable-containers 0.3
  • Include dlist support

0.10.5

  • Export Data.Mutable

0.10.4

  • Expose all of Data.Functor

0.10.3

  • Expose liftA functions and <**> #94

0.10.2

  • Provide foldMap and fold as synonyms for concatMap and concat.
  • Switch to more general Traversable-based functions (sequence_ in particular).