凌晨三点，会议室灯火通明，产品经理指着屏幕上的流程图，唾沫横飞：“为什么用户取消订单后，优惠券没自动退回？” 你低头看了看自己写的代码——订单模块调用了支付模块，支付模块又调用了优惠券模块，优惠券模块还调用了用户模块。这四个模块像 ...

Ruby is an incredibly easy language to learn, and there's a lot of evidence why it is simple to break into and start.

Asynchronous programming with async and await has existed in .NET for years. Now Microsoft is delivering a new runtime environment for asynchronous execution.