I've been quite happy with Reactive Cocoa: https://github.com/blog/1107-reactivecocoa-for-a-better-world https://github.com/blog/1107-reactivecocoa-for-a-better

I've been quite happy with Reactive Cocoa: https://github.com/blog/1107-reactivecocoa-for-a-better-world https://github.com/blog/1107-reactivecocoa-for-a-better-worl...