NSmutableArray与字典值如何计算具体值？

Question

我有一个带有词典的可变阵列。我想算一下有多少字典有特定价值？

NSDictionary * question = [self.tabQuestionnaire objectAtIndex：indexPath.row]; [question objectForKey：@“theme”]

Answer 1

- （NSInteger）countValue :( NSString *）值forKey：（NSString *）key {

NSInteger result = 0;

 for (NSDictionary *question in self.tabQuestionnaire){
    if ([value isEqualToString: [question objectForKey:key]]){
       result++;
 }

return result;

}