W3cubDocs

/C++

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

constexpr const_reference front() const;
(since C++17)

Returns reference to the first character in the view. The behavior is undefined if empty() == true.

Parameters

(none).

Return value

reference to the first character, equivalent to operator[](0).

Complexity

Constant.

See also

accesses the last character
(public member function)
checks whether the view is empty
(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/front