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gleam_stdlib

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A standard library for the Gleam programming language

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gleam_stdlib src gleam@map.erl
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src/gleam@map.erl 

-module(gleam@map).

-compile([no_auto_import, nowarn_unused_vars]).



-export([size/1, to_list/1, from_list/1, has_key/2, new/0, get/2, insert/3, map_values/2, keys/1, values/1, filter/2, take/2, merge/2, delete/2, drop/2, update/3, fold/3]).

-export_type([map_/2]).



-type map_(LP, LQ) :: any() | {gleam_phantom, LP, LQ}.



-spec size(map_(any(), any())) -> integer().

size(Map) ->

    maps:size(Map).



-spec to_list(map_(LZ, MA)) -> list({LZ, MA}).

to_list(Map) ->

    maps:to_list(Map).



-spec from_list(list({MJ, MK})) -> map_(MJ, MK).

from_list(List) ->

    maps:from_list(List).



-spec has_key(map_(MT, any()), MT) -> boolean().

has_key(Map, Key) ->

    maps:is_key(Key, Map).



-spec new() -> map_(any(), any()).

new() ->

    maps:new().



-spec get(map_(NJ, NK), NJ) -> {ok, NK} | {error, nil}.

get(From, Get) ->

    gleam_stdlib:map_get(From, Get).



-spec insert(map_(NV, NW), NV, NW) -> map_(NV, NW).

insert(Map, Key, Value) ->

    maps:put(Key, Value, Map).



-spec map_values(map_(OH, OI), fun((OH, OI) -> OL)) -> map_(OH, OL).

map_values(Map, Fun) ->

    maps:map(Fun, Map).



-spec keys(map_(OV, any())) -> list(OV).

keys(Map) ->

    maps:keys(Map).



-spec values(map_(any(), PG)) -> list(PG).

values(Map) ->

    maps:values(Map).



-spec filter(map_(PP, PQ), fun((PP, PQ) -> boolean())) -> map_(PP, PQ).

filter(Map, Property) ->

    maps:filter(Property, Map).



-spec take(map_(QB, QC), list(QB)) -> map_(QB, QC).

take(Map, Desired_keys) ->

    maps:with(Desired_keys, Map).



-spec merge(map_(QP, QQ), map_(QP, QQ)) -> map_(QP, QQ).

merge(Map, New_entries) ->

    maps:merge(Map, New_entries).



-spec delete(map_(RF, RG), RF) -> map_(RF, RG).

delete(Map, Key) ->

    maps:remove(Key, Map).



-spec drop(map_(RR, RS), list(RR)) -> map_(RR, RS).

drop(Map, Disallowed_keys) ->

    case Disallowed_keys of

        [] ->

            Map;



        [X | Xs] ->

            drop(delete(Map, X), Xs)

    end.



-spec update(map_(RY, RZ), RY, fun((gleam@option:option(RZ)) -> RZ)) -> map_(RY, RZ).

update(Map, Key, Fun) ->

    _pipe = Map,

    _pipe@1 = get(_pipe, Key),

    _pipe@2 = gleam@option:from_result(_pipe@1),

    _pipe@3 = Fun(_pipe@2),

    insert(Map, Key, _pipe@3).



-spec do_fold(list({SF, SG}), SI, fun((SI, SF, SG) -> SI)) -> SI.

do_fold(List, Initial, Fun) ->

    case List of

        [] ->

            Initial;



        [{K, V} | Rest] ->

            do_fold(Rest, Fun(Initial, K, V), Fun)

    end.



-spec fold(map_(SJ, SK), SN, fun((SN, SJ, SK) -> SN)) -> SN.

fold(Map, Initial, Fun) ->

    _pipe = Map,

    _pipe@1 = to_list(_pipe),

    do_fold(_pipe@1, Initial, Fun).