Deduce the template parameters KEY and VALUE from the value_type of the iterators supplied to the constructor of unordered_map. Deduce the template parameter ALLOCATOR from the other parameter passed to the constructor of unordered_map. This deduction guide does not participate unless the supplied allocator meets the requirements of a standard allocator.
Declared in <bslstl_unorderedmap.h>
template<
class INPUT_ITERATOR,
class ALLOCATOR,
class KEY = BloombergLP::bslstl::IteratorUtil::IterKey_t<INPUT_ITERATOR>,
class VALUE = BloombergLP::bslstl::IteratorUtil::IterMapped_t<INPUT_ITERATOR>>
requires bsl::IsStdAllocator_v<ALLOCATOR>
unordered_map<KEY, VALUE, bsl::hash<KEY>, bsl::equal_to<KEY>, ALLOCATOR>(
INPUT_ITERATOR,
INPUT_ITERATOR,
bsl::allocator_traits<ALLOCATOR>::size_type,
ALLOCATOR) -> unordered_map<KEY, VALUE, bsl::hash<KEY>, bsl::equal_to<KEY>, ALLOCATOR>;