Insert the specified value into this map if the key of value does not already exist in this map; otherwise, this method has no effect. Return an iterator referring to the (possibly newly inserted) modifiable element in this map whose key is equivalent to that of the element to be inserted. The supplied const_iterator is ignored.
Declared in <bdlc_flathashmap.h>
template<class VALUE_TYPE>
iterator
insert(
const_iterator,
VALUE_TYPE&& value)
requires bsl::is_constructible<value_type,
VALUE_TYPE&&>::value;