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retired
A standard library for the Gleam programming language
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src/gleam@order.erl
-module(gleam@order).
-compile(no_auto_import).
-export([reverse/1, to_int/1, compare/2, max/2, min/2]).
-export_type([order/0]).
-type order() :: lt | eq | gt.
-spec reverse(order()) -> order().
reverse(Order) ->
case Order of
lt ->
gt;
eq ->
eq;
gt ->
lt
end.
-spec to_int(order()) -> integer().
to_int(Order) ->
case Order of
lt ->
-1;
eq ->
0;
gt ->
1
end.
-spec compare(order(), order()) -> order().
compare(A, B) ->
case {A, B} of
{X, Y} when X =:= Y ->
eq;
{lt, _@1} ->
lt;
{eq, gt} ->
lt;
{_@2, _@3} ->
gt
end.
-spec max(order(), order()) -> order().
max(A, B) ->
case {A, B} of
{gt, _@1} ->
gt;
{eq, lt} ->
eq;
{_@2, _@3} ->
B
end.
-spec min(order(), order()) -> order().
min(A, B) ->
case {A, B} of
{lt, _@1} ->
lt;
{eq, gt} ->
eq;
{_@2, _@3} ->
B
end.