added objectForPredicate: method

livelycode · Aug 9, 2011 · f910528 · f910528
1 parent 7f914e4
commit f910528
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diff --git a/CollectionIterators.h b/CollectionIterators.h
@@ -14,6 +14,7 @@
 - (NSArray *)reversedArray;
 - (BOOL)all:(BOOL (^)(id each))block;
 - (BOOL)any:(BOOL (^)(id each))block;
+- (id)objectForPredicate:(BOOL (^)(id each))block;
 @end
 
 @interface NSDictionary(NSDictionaryIterators)

diff --git a/CollectionIterators.m b/CollectionIterators.m
@@ -95,6 +95,14 @@ - (BOOL)all:(BOOL (^)(id))block {
   return all;
 }
 
+- (id)objectForPredicate:(BOOL (^)(id each))block {
+  for (id anObject in self) {
+    if (block(anObject) == YES) {
+      return anObject;
+    }
+  }
+}
+
 @end
 
 @implementation NSDictionary(NSDictionaryIterators)