Index: src/OFArray.h
==================================================================
--- src/OFArray.h
+++ src/OFArray.h
@@ -204,10 +204,28 @@
  * \param separator The string with which the objects should be joined
  * \return A string containing all objects joined by the separator
  */
 - (OFString*)componentsJoinedByString: (OFString*)separator;
 
+/**
+ * Performs the specified selector on all objects in the array.
+ *
+ * \param selector The selector to perform on all objects in the array
+ */
+- (void)makeObjectsPerformSelector: (SEL)selector;
+
+/**
+ * Performs the specified selector on all objects in the array with the
+ * specified object.
+ *
+ * \param selector The selector to perform on all objects in the array
+ * \param obj The object to perform the selector with on all objects in the
+ *	      array
+ */
+- (void)makeObjectsPerformSelector: (SEL)selector
+			withObject: (id)obj;
+
 #ifdef OF_HAVE_BLOCKS
 /**
  * Executes a block for each object.
  *
  * \param block The block to execute for each object

Index: src/OFArray.m
==================================================================
--- src/OFArray.m
+++ src/OFArray.m
@@ -418,10 +418,29 @@
 	 * would create a real copy each time -[copy] is called.
 	 */
 	ret->isa = [OFString class];
 	return ret;
 }
+
+- (void)makeObjectsPerformSelector: (SEL)selector
+{
+	id *objs = [array cArray];
+	size_t i, count = [array count];
+
+	for (i = 0; i < count; i++)
+		((void(*)())[objs[i] methodForSelector: selector])();
+}
+
+- (void)makeObjectsPerformSelector: (SEL)selector
+			withObject: (id)obj
+{
+	id *objs = [array cArray];
+	size_t i, count = [array count];
+
+	for (i = 0; i < count; i++)
+		((void(*)(id))[objs[i] methodForSelector: selector])(obj);
+}
 
 - (int)countByEnumeratingWithState: (of_fast_enumeration_state_t*)state
 			   objects: (id*)objects
 			     count: (int)count_
 {