std::basic_string_view<CharT,Traits>::begin, std::basic_string_view<CharT,Traits>::cbegin

constexpr const_iterator begin() const noexcept;
 (since C++17)
constexpr const_iterator cbegin() const noexcept;
 (since C++17)

Returns an iterator to the first character of the view.

range-begin-end.svg

Parameters

(none)

Return value

const_iterator to the first character.

Complexity

Constant.

Example

#include <concepts>
#include <string_view>
 
int main()
{
    constexpr std::string_view str_view("abcd");
 
    constexpr auto begin = str_view.begin();
    constexpr auto cbegin = str_view.cbegin();
    static_assert(
        *begin == 'a' and
        *cbegin == 'a' and
        *begin == *cbegin and
        begin == cbegin and
        std::same_as<decltype(begin), decltype(cbegin)>);
}

See also

(C++17)
 returns an iterator to the end
(public member function)
(DR*)
 returns an iterator to the beginning
(public member function of std::basic_string<CharT,Traits,Allocator>)