Add default value for maps:get

1 files changed, 17 insertions, 1 deletions

diff --git a/lib/stdlib/src/maps.erl b/lib/stdlib/src/maps.erl
index fd6d56fa47..4ef1638e6d 100644
--- a/lib/stdlib/src/maps.erl
+++ b/lib/stdlib/src/maps.erl
@@ -23,7 +23,8 @@
 	fold/3,
 	map/2,
 	size/1,
-	without/2
+    without/2,
+    get/3
     ]).
 
 
@@ -142,6 +143,21 @@ values(_) -> erlang:nif_error(undef).
 
 %%% End of BIFs
 
+-spec get(Key, Map, Default) -> Value | Default when
+        Key :: term(),
+        Map :: map(),
+        Value :: term(),
+        Default :: term().
+
+get(Key, Map, Default) ->
+    case maps:find(Key, Map) of
+        {ok, Value} ->
+            Value;
+        error ->
+            Default
+    end.
+
+
 -spec fold(Fun,Init,Map) -> Acc when
     Fun :: fun((K, V, AccIn) -> AccOut),
     Init :: term(),