Top "Unordered-map" questions

is a C++ class that is an associative container storing a combination of a key value and a mapped value allowing for quick retrieval of elements based on their keys.

How to specialize std::hash<Key>::operator() for user-defined type in unordered containers?

To support user-defined key types in std::unordered_set<Key> and std::unordered_map<Key, Value> …

c++ hash c++11 unordered-map unordered-set
Using tuple in unordered_map

I want to use tuple consisting of int,char,char in my unordered_map. I am doing like this: #include &…

c++ hashmap unordered-map stdtuple
How std::unordered_map is implemented

c++ unordered_map collision handling , resize and rehash This is a previous question opened by me and I have seen …

c++ c++11 hashmap unordered-map
C++ error: 'unordered_map' does not name a type

I am doing everything correctly as far as I can tell and I have gotten the error message: error: 'unordered_…

c++ types unordered-map
In unordered_map of C++11, how to update the value of a particular key?

In Java's hashmap: map.put(key, new_value) will update the entry of key=key with new_value if it …

c++11 unordered-map
sort an unordered_map using sort()

I am trying to sort an unordered_map using sort() function but I keep getting a compiler error. Can anyone …

c++ unordered-map
Iterating over unordered_map C++

Is it true that keys inserted in a particular order in an unordered_map, will come in the same order …

c++11 unordered-map
Difference between hash_map and unordered_map?

I recently discovered that the implementation of the hash map in C++ will be called unordered_map. When I looked …

c++ stl hashmap unordered-map
Simplest method to check whether unordered_map of unordered_maps contains key

I am using an unordered_map of unordered_maps, such that I can reference an element using the "multi key" …

c++ c++11 unordered-map
Using The [] Operator Efficiently With C++ unordered_map

Firstly could someone clarify whether in C++ the use of the [] operator in conjunction with an unordered_map for lookups …

c++ unordered-map