Index: src/OFIntrospection.m
==================================================================
--- src/OFIntrospection.m
+++ src/OFIntrospection.m
@@ -15,10 +15,11 @@
  */
 
 #include "config.h"
 
 #include <stdlib.h>
+#include <string.h>
 
 #if defined(OF_APPLE_RUNTIME)
 # import <objc/runtime.h>
 #endif
 
@@ -93,10 +94,55 @@
 - (OFString*)description
 {
 	return [OFString stringWithFormat: @"<OFMethod: %@ [%s]>",
 					   name, typeEncoding];
 }
+
+- (BOOL)isEqual: (id)object
+{
+	OFMethod *otherMethod;
+
+	if (![object isKindOfClass: [OFMethod class]])
+		return NO;
+
+	otherMethod = object;
+
+	if (!sel_isEqual(otherMethod->selector, selector))
+		return NO;
+
+	if (![otherMethod->name isEqual: name])
+		return NO;
+
+	if ((otherMethod->typeEncoding == NULL && typeEncoding != NULL) ||
+	    (otherMethod->typeEncoding != NULL && typeEncoding == NULL))
+		return NO;
+	if (strcmp(otherMethod->typeEncoding, typeEncoding))
+		return NO;
+
+	return YES;
+}
+
+- (uint32_t)hash
+{
+	uint32_t hash;
+
+	OF_HASH_INIT(hash);
+
+	OF_HASH_ADD_HASH(hash, [name hash]);
+
+	if (typeEncoding != NULL) {
+		size_t i, length;
+
+		length = strlen(typeEncoding);
+		for (i = 0; i < length; i++)
+			OF_HASH_ADD(hash, typeEncoding[i]);
+	}
+
+	OF_HASH_FINALIZE(hash);
+
+	return hash;
+}
 @end
 
 @implementation OFInstanceVariable
 #if defined(OF_OBJFW_RUNTIME)
 - OF_initWithIvar: (struct objc_ivar*)ivar