BloombergLP::bslstl::HashTable<UnorderedMapKeyConfiguration<basic_string<char> const, pair<basic_string<char> const, Json>>, TransparentHash, TransparentEqualTo, allocator<pair<basic_string<char> const, Json>>>::tryEmplace

If a key equivalent to the specified key already exists in this hash-table, load false into the specified isInsertedFlag and return a pointer to the existing entry. Otherwise, insert into this hash-table a newly-created value_type object, constructed from key and the specified args, load true into isInsertedFlag and return a pointer to the newly created entry. Use the optionally specified hint as a starting place for the search for the existing key.

Synopsis

Declared in <bslstl_hashtable.h>

template<
    class LOOKUP_KEY,
    class... ARGS>
bslalg::BidirectionalLink*
tryEmplace(
    bool* isInsertedFlag,
    bslalg::BidirectionalLink* hint,
    LOOKUP_KEY&& key,
    ARGS&&... args)
requires BloombergLP::bslmf::IsTransparentPredicate<HASHER,    LOOKUP_KEY>::value
   && BloombergLP::bslmf::IsTransparentPredicate<COMPARATOR,LOOKUP_KEY>::value;