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)