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std::unordered_map::at(3) C++ Standard Libary std::unordered_map::at(3) NAME std::unordered_map::at - std::unordered_map::at Synopsis T& at( const Key& key ); (1) (since C++11) const T& at( const Key& key ) const; (2) (since C++11) Returns a reference to the mapped value of the element with key equivalent to key. If no such element exists, an exception of type std::out_of_range is thrown. Parameters key - the key of the element to find Return value Reference to the mapped value of the requested element Exceptions std::out_of_range if the container does not have an element with the specified key Complexity Average case: constant, worst case: linear in size. See also operator[] access or insert specified element (C++11) (public member function) http://cppreference.com 2022.07.31 std::unordered_map::at(3)
NAME | Synopsis | Parameters | Return value | Exceptions | Complexity | See also
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