begin overloads
Declared in <bslstl_set.h>
Return an iterator providing modifiable access to the first value_type object in the ordered sequence of value_type objects maintained by this set, or the end iterator if this set is empty.
set<KEY, COMPARATOR, ALLOCATOR>::iterator
begin() noexcept;Return an iterator providing non-modifiable access to the first value_type object in the ordered sequence of value_type objects maintained by this set, or the end iterator if this set is empty.
set<KEY, COMPARATOR, ALLOCATOR>::const_iterator
begin() const noexcept;