Index: src/OFArray.m
==================================================================
--- src/OFArray.m
+++ src/OFArray.m
@@ -276,11 +276,25 @@
 	return [self objectAtIndex: index];
 }
 
 - (id)valueForKey: (OFString*)key
 {
-	OFMutableArray *ret = [OFMutableArray arrayWithCapacity: [self count]];
+	OFMutableArray *ret;
+
+	if ([key hasPrefix: @"@"]) {
+		void *pool = objc_autoreleasePoolPush();
+		id ret;
+
+		key = [key substringWithRange: of_range(1, [key length] - 1)];
+		ret = [[super valueForKey: key] retain];
+
+		objc_autoreleasePoolPop(pool);
+
+		return [ret autorelease];
+	}
+
+	ret = [OFMutableArray arrayWithCapacity: [self count]];
 
 	for (id object in self) {
 		id value = [object valueForKey: key];
 
 		if (value == nil)
@@ -295,10 +309,21 @@
 }
 
 - (void)setValue: (id)value
 	  forKey: (OFString*)key
 {
+	if ([key hasPrefix: @"@"]) {
+		void *pool = objc_autoreleasePoolPush();
+
+		key = [key substringWithRange: of_range(1, [key length] - 1)];
+		[super setValue: value
+			 forKey: key];
+
+		objc_autoreleasePoolPop(pool);
+		return;
+	}
+
 	if (value == [OFNull null])
 		value = nil;
 
 	for (id object in self)
 		[object setValue: value

Index: tests/OFArrayTests.m
==================================================================
--- tests/OFArrayTests.m
+++ tests/OFArrayTests.m
@@ -324,11 +324,13 @@
 
 	TEST(@"-[valueForKey:]",
 	    [[[OFArray arrayWithObjects: @"foo", @"bar", @"quxqux", nil]
 	    valueForKey: @"length"] isEqual:
 	    [OFArray arrayWithObjects: [OFNumber numberWithSize: 3],
-	    [OFNumber numberWithSize: 3], [OFNumber numberWithSize: 6], nil]])
+	    [OFNumber numberWithSize: 3], [OFNumber numberWithSize: 6], nil]] &&
+	    [[[OFArray arrayWithObjects: @"1", @"2", nil]
+	    valueForKey: @"@count"] isEqual: [OFNumber numberWithSize: 2]])
 
 	m[0] = [OFMutableArray arrayWithObjects:
 	    [OFURL URLWithString: @"http://foo.bar/"],
 	    [OFURL URLWithString: @"http://bar.qux/"],
 	    [OFURL URLWithString: @"http://qux.quxqux/"], nil];