Objective-C の配列周りの処理

componentsJoinedByString 覚えにくいな・・

NSMutableArray *array = [[NSMutableArray alloc] init];;
for (NSDictionary *language in user.languages) {
    [array addObject:language[@"name"]];
}
NSLog(@"%@", [array componentsJoinedByString:@","]); // カンマ区切り