Question

I am creating a property on a class that is gonna be a block.

It is being defined like

@property (nonatomic, strong) void (^ myBlock)();

I would like to do lazy creation of that property, so I want to create a getter for that block to run when the the property is used by some code.

If the property was not a block and was a NSArray for example, I would do the setter like this:

@synthesize myProperty = _myProperty;

- (NSArray *)myProperty {

    if (_myProperty) {
        _myProperty = [[NSArray alloc] init];
    }

    return _myProperty;
}

How do I do a getter (lazy instantiation) for a property that is a block?

NOTE: this block is inside a singleton.

thanks

Answer 1

@property (nonatomic, copy) void (^ myBlock)();

- (void (^)())myBlock {
    if (!_myBlock) {
        self.myBlock = ^ () {
            NSLog(@"Do something");
        };
    }
    return _myBlock;
}