C++ 如何使用Boost正则表达式替换方法？
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how to use Boost regular expression replace method?
提问by unwise guy
I have these variables:
我有这些变量：
boost::regex re //regular expression to use
std::string stringToChange //replace this string
std::string newValue //new value that is going to replace the stringToChange depending on the regex.
I only want to replace the first occurrence of it only.
我只想替换它的第一次出现。
Thanks fellas.
谢谢各位。
EDIT: I've found this:
编辑：我发现了这个：
boost::regex_replace(stringToChange, re, boost::format_first_only);
but it says the function does not exists, I'm guessing the parameters are incorrect at the moment.
但它说该函数不存在，我猜目前参数不正确。
回答by Jesse Good
Here is an example of basic usage:
下面是一个基本用法的例子：
#include <iostream>
#include <string>
#include <boost/regex.hpp>
int main(){
std::string str = "hellooooooooo";
std::string newtext = "o Bob";
boost::regex re("ooooooooo");
std::cout << str << std::endl;
std::string result = boost::regex_replace(str, re, newtext);
std::cout << result << std::endl;
}
Output
输出
hellooooooooo
hello Bob
你好哦哦哦
你好鲍勃
Make sure you are including <boost/regex.hpp>and have linked to the boost_regex library.
确保您包含<boost/regex.hpp>并链接到 boost_regex 库。
