erikkerber

// As a local variable.
returnType (^blockName)(parameterTypes) = ^returnType(parameters) {...};

// As a property.
@property (nonatomic, copy) returnType (^blockName)(parameterTypes);

// As a method parameter.
- (void)someMethodThatTakesABlock:(returnType (^)(parameterTypes))blockName {...}

// As an argument to a method call.

erikkerber

// clang -fobjc-arc -framework Foundation runtime-class.m

#import <Foundation/Foundation.h>

#import <objc/runtime.h>


@interface Person : NSObject

- (id)initWithFirstName: (NSString *)firstName lastName: (NSString *)lastName age: (NSUInteger)age;