std::forward_list::front
From cppreference.com
< cpp | container | forward list
| reference front();
|
(since C++11) | |
| const_reference front() const;
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(since C++11) | |
Returns a reference to the first element in the container.
Calling front on an empty container is undefined.
Contents |
[edit] Parameters
(none)
[edit] Return value
reference to the first element
[edit] Complexity
Constant
[edit] Notes
For a container c, the expression c.front() is equivalent to *c.begin().
[edit] Example
The following code uses front to display the first element of a std::forward_list<char>:
Run this code
#include <forward_list> #include <iostream> int main() { std::forward_list<char> letters {'o', 'm', 'g', 'w', 't', 'f'}; if (!letters.empty()) { std::cout << "The first character is: " << letters.front() << '\n'; } }
Output:
The first character is o