Android代码-promise-kotlin

Promise.kt Promise as a pattern is well known in JS world, but it's not so popular among Android folks, maybe because of the fact that we have very powerful RxJava library. But what if you need RxJava just for a single value response (Single) such as single network request and couple transformation operation like: flatMap and map. If this is the case then you should consider Promise pattern that works well for single value response. What is Promise ? Wiki defines Promises pattern as: > Promise