std::flat_set<Key,Compare,KeyContainer>::begin, std::flat_set<Key,Compare,KeyContainer>::

Returns an iterator to the first element of the flat_set.

If the flat_set is empty, the returned iterator will be equal to end().

Parameters

(none)

Return value

Iterator to the first element.

Complexity

Constant.

Notes

Because both iterator and const_iterator

Example

#include <algorithm>
#include <flat_set>
#include <iostream>
 
int main()
{
    std::flat_set<int> set{3, 1, 4, 1, 5, 9, 2, 6, 5};
    std::for_each(set.cbegin(), set.cend(), [](int x)
    {
        std::cout << x << ' ';
    });
    std::cout << '\n';
}

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See also