- 1.RACObserve
- 2.RACSubject 对subject进行了map操作
http://tech.meituan.com/potential-memory-leak-in-reactivecocoa.html ###热信号和冷信号相关的文章 http://tech.meituan.com/talk-about-reactivecocoas-cold-signal-and-hot-signal-part-1.html http://tech.meituan.com/talk-about-reactivecocoas-cold-signal-and-hot-signal-part-2.html http://tech.meituan.com/talk-about-reactivecocoas-cold-signal-and-hot-signal-part-3.html
