Adding blocks with persistent arguments to an array

gistfile1.txt

// This is similar to using callback blocks with three key differences:
// 1. Blocks stored in an array retain their arguments outside of the context in whicn they were created
// 2. Blocks can be called in combination or in a variance of succession
// 3. The number of blocks to be executed is known up-front

// The same effect could be achieved via regular callback blocks; however, the argument values would not be persistent

typedef int(^BlockObject)(void);

- (void)test {
  NSMutableArray <BlockObject> * blockArray;
  blockArray = [[NSMutableArray alloc] initWithCapacity:3];

  int numbers[3] = {1, 2, 3};
  [self addBlocksWithArguments:numbers toArray:blockArray];
  
  [self executeBlocks:blockArray];
}

- (BlockObject)blockWithArgument:(int)number {
    return [^ int {
        printf("Input\t%d\n", number);
        return number;
    } copy];
}

- (void)addBlocksWithArguments:(int[3])numbers toArray:(NSMutableArray <CallbackBlock> *)array {
    for (int i = 0; i < 3; i++)
        [array addObject:[self blockWithArgument:i]];
}

- (void)executeBlocks:(NSMutableArray <CallbackBlock> *)array {
    for (int i = 0; i < 3; i++) {
        CallbackBlock cb = [array objectAtIndex:i];
        printf("Output\t%d\n", cb());
    }
}