Block_Apple_Description

As a local variable:

returnType (^blockName)(parameterTypes) = ^returnType(parameters) {...};```

>As a property:

@property (nonatomic, copy, nullability) returnType (^blockName)(parameterTypes);```

As a method parameter:

- (void)someMethodThatTakesABlock:(returnType (^nullability)(parameterTypes))blockName;

As an argument to a method call:

[someObject someMethodThatTakesABlock:^returnType (parameters){

...

}];```


>As a typedef:

typedef returnType (^TypeName)(parameterTypes);

TypeName blockName = ^returnType(parameters) {

...

};