Return the const iterator range of elements equal to key.

Synopsis

Declared in <bdlc_flathashmap.h>

template<class LOOKUP_KEY>
bsl::pair<const_iterator, const_iterator>
equal_range(LOOKUP_KEY const& key) const
requires BloombergLP::bslmf::IsTransparentPredicate<HASH, LOOKUP_KEY>::value
         && BloombergLP::bslmf::IsTransparentPredicate<EQUAL,LOOKUP_KEY>::value;

Description

Return a pair of iterators providing non‐modifiable access to the sequence of value_type objects in this unordered map that are equivalent to the specified key, where the first iterator is positioned at the start of the sequence and the second iterator is positioned one past the end of the sequence. If this unordered map contains no value_type objects equivalent to key, then the two returned iterators will have the same value. Note that since an unordered map maintains unique keys, the range will contain at most one element.

Return Value

pair of const iterators delimiting the equal range

Parameters

Name

Description

key

transparent key to find

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