提升异常与Ruby中的抛出异常有什么区别？ [英] What is the difference between Raising Exceptions vs Throwing Exceptions in Ruby?

问题描述

为什么我们有两个？

$ b $你应该什么时候使用而不是其他的？

解决方案

我认为 http://hasno.info/ruby-gotchas-and-caveats 有一个不同的解释：

抓取/抛出与加注/抢救不一样。捕获/抛出允许您快速退出块返回到为特定符号定义捕获点的位置，提升拯救是涉及异常对象的真正异常处理。

Ruby has two different exceptions mechanisms: Throw/Catch and Raise/Rescue.

Why do we have two?

When should you use one and not the other?

解决方案

I think http://hasno.info/ruby-gotchas-and-caveats has a decent explanation of the difference:

catch/throw are not the same as raise/rescue. catch/throw allows you to quickly exit blocks back to a point where a catch is defined for a specific symbol, raise rescue is the real exception handling stuff involving the Exception object.

这篇关于提升异常与Ruby中的抛出异常有什么区别？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！