Hydra

Hydra is full-featured lightweight library which allows you to write better async code in Swift 3.x/4.x. It’s partially based on JavaScript A+ specs and also implements modern construct like await (as seen in Async/Await specification in ES8 (ECMAScript 2017) or C#) which allows you to write async code in sync manner. Hydra supports all sexiest operators like always, validate, timeout, retry, all, any, pass, recover, map, zip, defer and retry. Starts writing better async code with Hydra!