从char（非char *）到std :: string的首选转换 [英] Preferred conversion from char (not char*) to std::string

问题描述

我有一个 char ，一个简单的老字符，我想变成 std :: string 。 std :: string（char）当然不存在。我可以创建一个字符数组并复制它，我可以通过字符串流，或许多其他小迂回路由。目前，我更喜欢 boost :: lexical_cast ，但是对于这个简单的任务似乎太冗长了。那么，首选方法是什么？

I have a char, a plain old character, that I would like to turn into an std::string. std::string(char) doesn't exist of course. I could create an char array and copy it in, I could go through string streams, or many other little roundabout routes. Currently, I prefer boost::lexical_cast, but even that seems too verbose for this simple task. So what's the preferred way?

推荐答案

std :: string 构造函数，它接受一个数字和一个字符。字符将重复给定的次数。因此，您应该使用：

std::string has a constructor that takes a number and a character. The character will repeat for the given number of times. Thus, you should use:

std::string str(1, ch);

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