[hope.git] / src / hope_fun.erl

-module(hope_fun).

-export(
    [ id/1
    , curry/1
    ]).

-spec id(A) ->
    A.
id(X) ->
    X.

-spec curry(fun()) ->
    fun().
curry(F) ->
    {some, Arity} = hope_kv_list:get(erlang:fun_info(F), arity),
    curry(F, [], Arity).

-spec curry(fun(), list(), integer()) ->
    fun().
curry(F, Args, 0) ->
    apply(F, lists:reverse(Args));
curry(F, Args, Arity) ->
    fun (X) -> curry(F, [X | Args], Arity - 1) end.
Commit	Line	Data
64617423 SK	1	-module(hope_fun).
	2
	3	-export(
	4	[ id/1
e033aade	5	, curry/1
64617423 SK	6	]).
	7
	8	-spec id(A) ->
	9	A.
	10	id(X) ->
	11	X.
e033aade SK	12
	13	-spec curry(fun()) ->
	14	fun().
	15	curry(F) ->
87160c0a	16	{some, Arity} = hope_kv_list:get(erlang:fun_info(F), arity),
e033aade SK	17	curry(F, [], Arity).
	18
	19	-spec curry(fun(), list(), integer()) ->
	20	fun().
	21	curry(F, Args, 0) ->
	22	apply(F, lists:reverse(Args));
	23	curry(F, Args, Arity) ->
	24	fun (X) -> curry(F, [X \| Args], Arity - 1) end.