Tuple.Create() 与新元组 [英] Tuple.Create() vs new Tuple

问题描述

考虑以下表达式:

new Tuple<int,int>(1,2);

Tuple.Create(1,2);

这两种创建元组的方法有什么区别吗?从我的阅读来看，它似乎比 C++ 中的对象创建(堆与堆栈)更方便.

Is there any difference between these two methods of Tuple creation? From my reading it seems to be more a convenient shorthand than anything like object creation in C++ (heap vs stack).

推荐答案

嗯，这个问题很老了……但我认为我可以做出建设性的贡献.从接受的答案:

Well, this questions is old... but nevertheless I think I may contribute constructively. From the accepted answer:

我想一个好处是，由于您不必使用 Tuple.Create 指定类型，因此您可以存储匿名类型，否则您将无法说出类型是什么

I suppose one benefit is that, since you don't have to specify the type with Tuple.Create, you can store anonymous types for which you otherwise wouldn't be able to say what the type is

结果是正确的:您可以存储匿名类型...

The consequence is true: you can store anonymous types for which ...

但是第一部分:

因为您不必使用 Tuple.Create 指定类型

since you don't have to specify the type with Tuple.Create

并不总是正确的.考虑以下场景:

is not always true. Consider the following scenario:

interface IAnimal
{
}

class Dog : IAnimal
{
}

以下不会编译:

Tuple<IAnimal> myWeirdTuple;

myWeirdTuple = Tuple.Create(new Dog());

您必须在 Create 方法中指定类型参数，如下所示:

You will have to specify the type parameter in the Create method like this:

myWeirdTuple = Tuple.Create<IAnimal>(new Dog());

这与调用 new Tuple(new Dog()) IMO 一样冗长

which is as verbose as calling new Tuple<IAnimal>(new Dog()) IMO

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