BSD-3-Clause licensed by Chris Done
This version can be pinned in stack with:labels-0.3.0@sha256:17a540e516d94740849852c4cb6e436f9da81b32727f2259d2d5b0b9141191ee,954
Module documentation for 0.3.0
labels
Declare and access tuple fields with labels
This package is experimental, exploring the design space opened up by
the implemented and to-be-implemented work on extensible records in GHC.
Note: You need GHC 8.0.1 for the #foo syntax, otherwise you have to
use $("foo") which works on GHC 7.10.
Basic examples
The haddock docs are here.
Enable these extensions:
-
In GHCi: :set -XOverloadedLabels -XTypeOperators -XDataKinds -XFlexibleContexts
-
In a module: {-# LANGUAGE OverloadedLabels, TypeOperators, DataKinds, FlexibleContexts #-}
Let’s use GHCi:
> import Labels
> :set -XOverloadedLabels -XTypeOperators -XDataKinds -XFlexibleContexts
