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retired
A standard library for the Gleam programming language
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gen/src/gleam@pair.erl
-module(gleam@pair).
-compile(no_auto_import).
-export([first/1, second/1, swap/1, map_first/2, map_second/2]).
first(Pair) ->
{A, _} = Pair,
A.
second(Pair) ->
{_, A} = Pair,
A.
swap(Pair) ->
{A, B} = Pair,
{B, A}.
map_first(Pair, Fun) ->
{A, B} = Pair,
{Fun(A), B}.
map_second(Pair, Fun) ->
{A, B} = Pair,
{A, Fun(B)}.