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C++中有tuple了，为什么还需要pair？ - 知乎
pair是将2个数据组合成一组数据，类似于map中的key和value放在一起保存，它是由结构体实现，元素分别为first和second。 pair被包含在utility头文件中，实现形式如下： ... 参数：T1是第一个值的数据类 …
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c++ - Что такое pair и где использовать? - Stack Overflow на русском
2013年6月13日 · Не могу понять зачем такое объединение двух объектов разного или одного типа, в один объект? И чем это отличается от map? И как или какой смысл использовать pair вместе …
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.net - What is a C# analog of C++ std::pair? - Stack Overflow
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.
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c++ - What is std::pair? - Stack Overflow
2008年9月18日 · 36 std::pair is a data type for grouping two values together as a single object. std::map uses it for key, value pairs. While you're learning pair, you might check out tuple. It's like pair but for …
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怎样理解pytorch中的_pair呢？ - 知乎
知乎页面讨论了Python中的torch.nn模块，特别是函数_pair的使用及其在卷积神经网络中的应用。
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A Java collection of value pairs? (tuples?) - Stack Overflow
The preferred solution as you've described it is a List of Pairs (i.e. List). To accomplish this you would create a Pair class for use in your collection. This is a useful utility class to add to your code base. …
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如何使用 pair 作为 unordered_map 的 key？ - 知乎
如题，以下代码：unordered_map, vector> hashmap;编译器…
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What is the purpose of std::make_pair vs the constructor of std::pair?
2012年2月14日 · The difference is that with std::pair you need to specify the types of both elements, whereas std::make_pair will create a pair with the type of the elements that are passed to it, without …
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Why can't I compile an unordered_map with a pair as key?
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 method guarantees that the key will be optimally …
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c++ - How to hash std::pair<int, int>? - Stack Overflow
hash> 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 your map …