Implement hope_list:map_slow/2

[hope.git] / src / hope_list.erl

diff --git a/src/hope_list.erl b/src/hope_list.erl
index b93ad2d..aba9944 100644 (file)
--- a/src/hope_list.erl
+++ b/src/hope_list.erl
@@ -7,6 +7,7 @@
 -export(
     [ unique_preserve_order/1
     , map_rev/2
+    , map_slow/2
     ]).
 
 
@@ -14,6 +15,14 @@
     [A].
 
 
+%% @doc lists:reverse(map_rev(L, F))
+%% @end
+-spec map_slow([A], fun((A) -> (B))) ->
+    [B].
+map_slow(Xs, F) ->
+    lists:reverse(map_rev(Xs, F)).
+
+
 %% @doc O(N), tail-recursive equivalent to lists:rev(lists:map(F, L))
 %% @end
 -spec map_rev([A], fun((A) -> (B))) ->