Overview

A proxy used to hold a weak object. It can be used to avoid retain cycles, such as the target in NSTimer or CADisplayLink.

sample code:

 @implementation ViewController {
    NSTimer *_timer;
 }

 - (void)initTimer {
    KSYWeakProxy *proxy = [KSYWeakProxy proxyWithTarget:self];
    _timer = [NSTimer timerWithTimeInterval:0.1 target:proxy selector:@selector(tick:) userInfo:nil repeats:YES];
 }

 - (void)tick:(NSTimer *)timer {...}
 @end