table of contents
std::basic_string_view::remove_prefix(3) | C++ Standard Libary | std::basic_string_view::remove_prefix(3) |
NAME¶
std::basic_string_view::remove_prefix - std::basic_string_view::remove_prefix
Synopsis¶
constexpr void remove_prefix( size_type n ); (since C++17)
Moves the start of the view forward by n characters.
The behavior is undefined if n > size().
Parameters¶
n - number of characters to remove from the start of the view
Return value¶
(none)
Complexity¶
Constant.
Example¶
// Run this code
#include <iostream>
#include <algorithm>
#include <string_view>
int main()
{
std::string str = " trim me";
std::string_view v = str;
v.remove_prefix(std::min(v.find_first_not_of(" "), v.size()));
std::cout << "String: '" << str <<
"'\n"
<< "View : '" << v << "'\n";
}
Output:¶
String: ' trim me'
View : 'trim me'
See also¶
remove_suffix shrinks the view by moving its end backward
(C++17) (public member function)
2022.07.31 | http://cppreference.com |