将字符串转换为小写 [英] Converting strings to lowercase

问题描述

如何将字符串转换为小写或忽略大小写进行等效性比较？在 Ascii 类型上有一个忽略的情况，但是它看起来很复杂，我看不到转换 str 的方法。到 Ascii 。

How does one convert a string to a lowercase or perform some kind of equivalency comparison ignoring case? There is an ignore case on the Ascii type but it seems convoluted and I don't see a way to convert str to Ascii.

推荐答案

std :: ascii :: AsciiExt.eq_ignore_ascii_case 做您想做的事情：

std::ascii::AsciiExt.eq_ignore_ascii_case does what you want:

use std::ascii::AsciiExt;

fn main() {
    assert!("foo".eq_ignore_ascii_case("FOO"));
}

（文档中的搜索现在非常好；搜索类似 case和 ascii返回包含此解决方案的良好结果集。）

(The search in the docs is quite good now; searches like "case" and "ascii" return good sets of results which contain this solution.)

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