我正在使用以下内容:
replace (str1.begin(), str1.end(), 'a' , '')
但这会导致编译错误.
基本上,replace
将一个字符替换为另一个字符,而 ''
不是一个字符.你要找的是erase
.
Basically, replace
replaces a character with another and ''
is not a character. What you're looking for is erase
.
参见 这个问题,它回答了同样的问题.在你的情况下:
See this question which answers the same problem. In your case:
#include <algorithm>
str.erase(std::remove(str.begin(), str.end(), 'a'), str.end());
或者使用 boost
如果这是您的选择,例如:
Or use boost
if that's an option for you, like:
#include <boost/algorithm/string.hpp>
boost::erase_all(str, "a");
所有这些都在 reference 网站.但是如果你不知道这些功能,你可以很容易地手工完成这种事情:
All of this is well-documented on reference websites. But if you didn't know of these functions, you could easily do this kind of things by hand:
std::string output;
output.reserve(str.size()); // optional, avoids buffer reallocations in the loop
for(size_t i = 0; i < str.size(); ++i)
if(str[i] != 'a') output += str[i];
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