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std::basic_string_view::remove_suffix(3) C++ Standard Libary std::basic_string_view::remove_suffix(3)

NAME

std::basic_string_view::remove_suffix - std::basic_string_view::remove_suffix

Synopsis


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

// Run this code


#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


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

2024.06.10 http://cppreference.com