std::basic_string<CharT,Traits,Allocator>::begin, std::basic_string<CharT,Traits,Allocator>::cbegin
< cpp | string | basic string
(1) | ||
iterator begin(); |
(until C++11) | |
iterator begin() noexcept; |
(since C++11) | |
(2) | ||
const_iterator begin() const; |
(until C++11) | |
const_iterator begin() const noexcept; |
(since C++11) | |
const_iterator cbegin() const noexcept; |
(3) | (since C++11) |
Returns an iterator to the first character of the string.
begin()
returns a mutable or constant iterator, depending on the constness of *this.
cbegin()
always returns a constant iterator. It is equivalent to const_cast<const basic_string&>(*this).begin().
Parameters
(none)
Return value
iterator to the first character
Complexity
Constant
Example
Run this code
#include <string> #include <iostream> int main() { std::string s("Exemplar"); *s.begin() = 'e'; std::cout << s <<'\n'; auto i = s.cbegin(); std::cout << *i << '\n'; // *i = 'E'; // error: i is a constant iterator }
Output:
exemplar e
See also
(C++11) |
returns an iterator to the end (public member function) |