std::basic_string::front
From cppreference.com
< cpp | string | basic string
CharT& front();
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(since C++11) | |
const CharT& front() const;
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(since C++11) | |
Returns reference to the first character in the string.
Contents |
[edit] Parameters
(none)
[edit] Return value
reference to the first character, equivalent to operator[](0).
[edit] Complexity
Constant
[edit] Notes
front
requires that empty() == false, otherwise the result is undefined.
[edit] Example
Run this code
#include <iostream> #include <string> int main() { { std::string s("Exemplary"); char& f = s.front(); f = 'e'; std::cout << s << '\n'; // "exemplary" } { std::string const c("Exemplary"); char const& f = c.front(); std::cout << &f << '\n'; // "Exemplary" } }
Output:
exemplary Exemplary
[edit] See also
(C++11)
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accesses the last character (public member function) |