哪里是值类型存储在（C＃）泛型集合 [英] Where Are Value Types Stored In (C#) Generic Collections

问题描述

这是事实，泛型集合的表现比非泛型集合值类型更好。 （即相对于表的ArrayList）。

It is true that generic collections perform better than non-generic collections for value types. (i.e. List vs. ArrayList).

但是，为什么是这样的，比装箱拆箱步其他？在哪里存储的值类型的对象，一旦添加到收藏？在非泛型集合，他们将被装箱，并存储在堆，什么是仿制药不同？

But why is that, other than the boxing-unboxing step? Where are the value type objects stored once added to the collection? In non-generic collections, they'll be boxed and stored on heap, what is different in generics?

推荐答案

在仿制药，如名单，其中，T＆GT; ，他们仍然保存在堆上。所不同的是，在内部，一列表与所述; INT＆GT; 使得整数的单一阵列，并且可以直接存储的数字。与ArrayList中，你最终存储引用数组盒装整数值。

In generics, such as List<T>, they're still stored on the heap. The difference is that, internally, a List<int> makes a single array of integers, and can store the numbers directly. WIth ArrayList, you end up storing an array of references to boxed integer values.

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