std::basic_string_view<CharT,Traits>::remove_suffix

constexpr void remove_suffix(size_type n);
 (since C++17)

Moves the end of the view back by n characters.

The behavior is undefined if n > size().

Parameters

n - number of characters to remove from the end of the view

Return value

(none).

Complexity

Constant.

Example

#include <iostream>
#include <string_view>
int main()
{
    char arr[] = {'a', 'b', 'c', 'd', '\0', '\0', '\0'};
    std::string_view v(arr, sizeof arr);
    auto trim_pos = v.find('\0');
    if(trim_pos != v.npos)
        v.remove_suffix(v.size() - trim_pos);
    std::cout << "Array: '" << arr << "', size=" << sizeof arr << '\n'
              << "View : '" << v << "', size=" << v.size() << '\n';
}

Output:

Array: 'abcd', size=7
View : 'abcd', size=4

See also

shrinks the view by moving its start forward
(public member function)

© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/string/basic_string_view/remove_suffix