memoize: A memoization library

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This library provides a type class Memoizable for memoizing functions, along with instances for a variety of argument types. It includes a Template Haskell function for deriving Memoizable instances for arbitrary algebraic datatypes.

The library constructs pure memo caches without the use of unsafePerformIO. This technique relies on implementation assumptions that, while not guaranteed by the semantics of Haskell, appear to be true.


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Versions [RSS] 0.1, 0.2, 0.3, 0.4, 0.6, 0.7, 0.8, 0.8.1, 1.0.0, 1.1.0, 1.1.1, 1.1.2
Change log CHANGELOG.md
Dependencies base (>=4.8 && <5), template-haskell (>=2 && <3) [details]
Tested with ghc ==9.0.1, ghc ==8.10.7, ghc ==8.6.5
License BSD-3-Clause
Author Jesse A. Tov <jesse.tov@gmail.com>
Maintainer jesse.tov@gmail.com
Category Data
Source repo head: git clone git://github.com/tov/memoize.git
Uploaded by JesseTov at 2022-09-16T16:55:41Z
Distributions Debian:0.8.1, NixOS:1.1.2
Reverse Dependencies 10 direct, 6 indirect [details]
Downloads 10945 total (63 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2022-09-16 [all 1 reports]

Readme for memoize-1.1.2

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memoize

Build Status Docs Hackage License: BSD 3-Clause

This library provides a type class Memoizable for memoizing functions, along with instances for a variety of argument types. It includes a Template Haskell function for deriving Memoizable instances for arbitrary algebraic datatypes.

The library constructs pure memo caches without the use of unsafePerformIO. This technique relies on implementation assumptions—namely, call-by-need—that, while not guaranteed by the semantics of Haskell, generally appear to hold.