pompopo / method-swizzling

method swizzling for an instance, not for a class

#method-swizzling

method swizzling for an instance, not for a class

================

Example

NSObject *objA = [[NSObject alloc] init];
NSObject *objB = [[NSObject alloc] init];
NSLog(@"description of A = %@", objA); // "description of A = <NSObject: 0x109247c00>"
NSLog(@"description of B = %@", objB); // "description of B = <NSObject: 0x109239010>"

[objB replaceMethodWithBlock:(NSString *)^(id sender) { 
    return @"pyonpyon";
}
                    selector:@selector(description)];

// no effect on objA
NSLog(@"description of A = %@", objA); // "description of A = <NSObject: 0x109247c00>"

// objB's description returns @"pyonpyon"
NSLog(@"description of B = %@", objB); // "description of B = pyonpyon"