如何安全地转换整数? [英] How to safely cast integers?

问题描述

曾经有一个 fn std::num::cast 会在整数类型之间进行转换并返回一个 Option(返回 None如果演员表无效).那个功能去哪儿了?

There used to be a fn std::num::cast that would cast between integer types and return an Option (returning None if the cast was invalid). Where did that functionality go?

推荐答案

类似于之前的问题，该功能移至 num crate.更准确地说，它在 num::traits::cast.

Similarily to previous question, that functionality moved to num crate. More precisely, It's in num::traits::cast.

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