From 7275a9ef72e79bbf33a47abdb72b4596a10505d8 Mon Sep 17 00:00:00 2001 From: Robert Peterson Date: Tue, 16 Apr 2019 15:23:19 -0700 Subject: Add list:all --- gen/src/list.erl | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'gen/src') diff --git a/gen/src/list.erl b/gen/src/list.erl index b606f22..9c26eba 100644 --- a/gen/src/list.erl +++ b/gen/src/list.erl @@ -1,7 +1,7 @@ -module(list). -compile(no_auto_import). --export([length/1, reverse/1, is_empty/1, contains/2, head/1, tail/1, filter/2, map/2, traverse/2, drop/2, take/2, new/0, append/2, flatten/1, fold/3, fold_right/3, find/2]). +-export([length/1, reverse/1, is_empty/1, contains/2, head/1, tail/1, filter/2, map/2, traverse/2, drop/2, take/2, new/0, append/2, flatten/1, fold/3, fold_right/3, find/2, all/2]). length(A) -> erlang:length(A). @@ -171,3 +171,18 @@ find(Haystack, F) -> find(Rest, F) end end. + +all(List, F) -> + case List of + [] -> + true; + + [X | Rest] -> + case F(X) of + true -> + all(Rest, F); + + _ -> + false + end + end. -- cgit v1.2.3