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hash<pair<int,int>> depends on primitive and standard library types only. This is easily worked around by defining your hash class outside of namespace std, and using that hash explicitly in. What is a C#'s analog of std::pair in C++? I found System.Web.UI.Pair class, but I'd prefer something template-based. unordered_map<size_t,double> Map; We can now use Map[key(i,j)]=value or Map.find(key(i,j)) to operate on the map. Every make_pair now becomes calling the inline key function. This.

Mar 4, 2014 · Am I remembering incorrectly, or did Java, once upon a time, provide a Pair class as part of its API? Jun 10, 2024 · I want to specify a time series as essentially a List of (double, double) pairs; but I'd like to abstract the doubles to the more meaningful types, datetime and value. But Dart. May 18, 2011 · Just attempting this question I found in a past exam paper so that I can prepare for an upcoming Java examination. Provide a generic class Pair for representing pairs of things.. Sep 6, 2011 · Is there available a proven Java Pair class implementation? I mean readily available, widely accepted and tested, maybe part of a more extensive library such as Apache. Let's say that I've got a : #include <utility> using namespace std; typedef pair<int, int> my_pair; how do I initialize a const my_pair ?