std::basic_string_view<CharT,Traits>::remove_suffix (3) - Linux Manuals

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

NAME

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