persistent-map-0.3.3: A thread-safe interface for finite map types with optional persistency support. Source code Contents Index

Data.HasKey Portability non-portable (requires STM) Stability experimental Maintainer Peter Robinson <thaldyron@gmail.com>

Description

Synopsis

class HasKey a k | a -> k where key :: a -> k

Documentation

class HasKey a k | a -> k where Source

Types where values have a key for indexing. Methods key :: a -> k Source Instances HasKey Sometype Int HasKey Sometype Int

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