c++ - CString::Mid() 是否有等效的 std::string？

Question

std::string中是否有等效功能对于 CString::mid() ?

Answer 1

等效的 std::string::substr 具有以下接口(interface):

basic_string substr( size_type pos = 0, size_type count = npos ) const;
constexpr basic_string substr( size_type pos = 0, size_type count = npos ) const;

你可以像这样使用它:

std::string str = "0123456789abcdefghij";

// returns [pos, size())
std::string sub1 = str.substr(10);
std::cout << sub1 << '\n';

// returns [pos, pos+count)
std::string sub2 = str.substr(5, 3);