How to copy std::string into std::vector<char>?
C++StringVectorCopyC++ Problem Overview
> Possible Duplicate:
> Converting std::string to std::vector<char>
I tried:
std::string str = "hello";
std::vector<char> data;
std::copy(str.c_str(), str.c_str()+str.length(), data);
but it does not work=( So I wonder How to copy std::string
into std::vector<char>
or std::vector<uchar>
?
C++ Solutions
Solution 1 - C++
std::vector
has a constructor that takes two iterators. You can use that:
std::string str = "hello";
std::vector<char> data(str.begin(), str.end());
If you already have a vector and want to add the characters at the end, you need a back inserter:
std::string str = "hello";
std::vector<char> data = /* ... */;
std::copy(str.begin(), str.end(), std::back_inserter(data));
Solution 2 - C++
You need a back inserter to copy into vectors:
std::copy(str.c_str(), str.c_str()+str.length(), back_inserter(data));