table of contents
std::basic_string_view::begin,std::basic_string_view::cbegin(3) | C++ Standard Libary | std::basic_string_view::begin,std::basic_string_view::cbegin(3) |
NAME¶
std::basic_string_view::begin,std::basic_string_view::cbegin - std::basic_string_view::begin,std::basic_string_view::cbegin
Synopsis¶
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¶
// Run this code
#include <iostream>
#include <string_view>
#include <type_traits>
int main()
{
std::string_view str_view("abcd");
auto begin = str_view.begin();
auto cbegin = str_view.cbegin();
std::cout << *begin << '\n';
std::cout << *cbegin << '\n';
std::cout << std::boolalpha << (begin == cbegin) << '\n';
std::cout << std::boolalpha << (*begin == *cbegin) <<
'\n';
static_assert(std::is_same<decltype(begin), decltype(cbegin)>{});
}
Output:¶
a
a
true
true
See also¶
end returns an iterator to the end
cend (public member function)
(C++17)
begin returns an iterator to the beginning
cbegin (public member function of
std::basic_string<CharT,Traits,Allocator>)
(C++11)
2022.07.31 | http://cppreference.com |