-module(go_over@util).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([iff/3, iffnil/2, throwaway/2]).

-spec iff(boolean(), fun(() -> MLY), MLY) -> MLY.
iff(V, F, Default) ->
    case V of
        true ->
            F();

        _ ->
            Default
    end.

-spec iffnil(boolean(), fun(() -> nil)) -> nil.
iffnil(V, F) ->
    iff(V, F, nil).

-spec throwaway(boolean(), fun(() -> {ok, any()} | {error, any()})) -> nil.
throwaway(V, F) ->
    case V of
        true ->
            _ = F(),
            nil;

        _ ->
            nil
    end.