NSArray of many NSDictionary. What is the best way to find a NSDictionary with necessary value for given key?

Question

Now I'm trying the following and it works.

    - (void)findDictionaryWithValueForKey:(NSString *)name {

         for (NSDictionary * set in myArray) {

            if ([[set objectForKey:@"title"] isEqualToString:name]) 
               \\do something

         }

    }

EDIT: I've added one extra argument to the post of bshirley. Now it looks more flexible.

- (NSDictionary *)findDictionaryWithValue:(NSString*)name forKey:(NSString *)key {

    __block BOOL found = NO;
    __block NSDictionary *dict = nil;

    [self.cardSetsArray enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        dict = (NSDictionary *)obj;
        NSString *title = [dict valueForKey:key];
        if ([title isEqualToString:name]) {
            found = YES;
            *stop = YES;
        }
    }];

    if (found) {
        return dict;
    } else {
        return nil;
    }

}

Answer 1

Here's one possible implementation using newer API. (I also modified the method to actually return the value). Provided mostly to demonstrate that API. The assumption is that the title is unique to one dictionary within your array.

- (NSDictionary *)findDictionaryWithValueForKey:(NSString *)name {
  // ivar: NSArray *myArray;
  __block BOOL found = NO;
  __block NSDictionary *dict = nil;

  [myArray enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
    dict = (NSDictionary *)obj;
    NSString *title = [dict valueForKey:@"title"];
    if ([title isEqualToString:name]) {
      found = YES;
      *stop = YES;
    }
  }];

  if (found) {
    return dict;
  } else {
    return nil;
  }

}