c++ - What is the usage of std::multimap? - Stack Overflow
Sep 6, 2022 · Further, std::multimap::count returns the number of elements for a given key. With the map of vectors you would have to first find the vector for given key and call its size. This list is not …
What's the difference between std::multimap<key, value> and std::map ...
Dec 22, 2011 · The multimap stores pairs of (key, value) where both key and value can appear several times. The map<key, set<value>> will only store each value once for a specific key.
Is there a 'multimap' implementation in Python? - Stack Overflow
Nov 14, 2009 · I am new to Python, and I am familiar with implementations of Multimaps in other languages. Does Python have such a data structure built-in, or available in a commonly-used library? …
When does using a std::multimap make sense - Stack Overflow
Currently I am trying to figure out, when using a std::multimap does make sense. As far as I can see, one can easily build ones own multimap implementation by combining std::map and std::vector.
How is the C++ multimap container implemented? - Stack Overflow
Jun 6, 2011 · The C++ standard does not define how the standard containers should be implemented, it only gives certain constraints like the one you say for vectors. multimaps have certain runtime …
What's the advantage of multimap over map of vectors?
Dec 14, 2010 · I don't understand why multimap exists if we can create map of vectors or map of sets. For me only differences are: using equal_range in multimap for getting elements of a key and in map …
How to create a Multimap<K,V> from a Map<K, Collection<V>>?
The miultimap create was util for me: Multimap<String, String> multimap = ArrayListMultimap.create (); It is applicable to all Multimap know implemented classes.
How to remove a specific pair from a C++ multimap?
Oct 17, 2010 · You can use std::multimap<char, int>::equal_range, which will give you an iterator range containing all pairs which have a certain key. So if you look for 'b', you will get an iterator range …
c# - multimap in .NET - Stack Overflow
Dec 19, 2008 · I need an equivalent to c++'s std::multimap<K, V, Comp, Alloc> in C-sharp. Does it exist in the standard library?
java - How to iterate through google multimap - Stack Overflow
Oct 14, 2010 · I have to iterate through google multimap. But I am using jdk 1.4 and can't switch to higher version. So i can not use generic features. My multimap can have multiple values for a key. …