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.
Parameters
(none).
Return value
const_iterator to the first character.
Complexity
Constant.
Example
#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
|
(C++17)
|
returns an iterator to the end (public member function) |
|
(C++11)
|
returns an iterator to the beginning (public member function of std::basic_string<CharT,Traits,Allocator>) |
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