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<unordered_set>

Unordered set header
Header that defines the unordered_set and unordered_multiset container classes:

Classes

unordered_set
Unordered Set (class template )
unordered_multiset
Unordered Multiset (class template )

Functions

begin
Iterator to beginning (function template )
end
Iterator to end (function template )

C++

Reference