X-Git-Url: https://git.xandkar.net/?a=blobdiff_plain;f=src%2Fhope_gen_dictionary.erl;h=c0b7e5348dc392782668f1d5e97102239c1aa142;hb=4744fed98ce752dde11c03aeaf8d90983efe5ea6;hp=dda6eb06bf4ca500380de1c4e4e941c9580434d5;hpb=870172d69230ad2cf0f409ec009ab3feaa723fee;p=hope.git

diff --git a/src/hope_gen_dictionary.erl b/src/hope_gen_dictionary.erl
index dda6eb0..c0b7e53 100644
--- a/src/hope_gen_dictionary.erl
+++ b/src/hope_gen_dictionary.erl
@@ -18,6 +18,9 @@
 -callback get(t(K, V), K, V) ->
     V.
 
+-callback get(t(K, V), K, V, fun((V) -> boolean())) ->
+    V.
+
 -callback set(t(K, V), K, V) ->
     t(K, V).
 
@@ -36,8 +39,8 @@
 -callback fold(t(K, V), fun((K, V, Acc) -> Acc), Acc) ->
     Acc.
 
--callback iter(t(K, V), fun((K, V) -> ok)) ->
-    ok.
+-callback iter(t(K, V), fun((K, V) -> any())) ->
+    {}.
 
 %% TODO: Decide if validation is to be done. If yes - wrap in hope_result:t/1
 -callback of_kv_list([{K, V}]) ->
@@ -45,3 +48,6 @@
 
 -callback to_kv_list(t(K, V)) ->
     [{K, V}].
+
+-callback has_key(t(K, _), K) ->
+    boolean().