是否可以确保.GetHashCode在系统/平台版本之间相同? [英] Is .GetHashCode guaranteed to be the same across systems/platform versions?

问题描述

可能重复:
可以依赖GetHashCode()的值吗保持一致?

Possible Duplicate:
Can I depend on the values of GetHashCode() to be consistent?

如果我在两个系统/框架版本之间使用Object.GetHashCode()方法，是否可以确保为相同的输入获得相同的值?换句话说，它的值是否成为持久数据的好钥匙?

If I use the Object.GetHashCode() method across two systems/framework versions, am I guaranteed to get the same value for the same input? In other words, does its value make a good key for persistent data?

注意:我不在乎这个问题中的冲突.

Note: I don't care about collisions in this problem.

作为奖励，我是否可以保证在Mono与Microsoft .Net中获得相同的价值?

As a bonus, am I guaranteed to get the same value in Mono vs. Microsoft .Net?

推荐答案

否.还有其他问题吗? :-)

No. Other questions? :-)

所使用的算法尚未发布，也不在Ecma标准中.

The algorithms used aren't published nor they are in the Ecma standard.

我将引用MSDN String.GetHashCode (我认为这个例子足够好)

I'll quote from the MSDN String.GetHashCode (I think that this example is good enough)

GetHashCode的行为取决于其实现，它可能从公共语言运行时的一种版本更改为另一种版本.发生这种情况的原因是为了提高GetHashCode的性能.

The behavior of GetHashCode is dependent on its implementation, which might change from one version of the common language runtime to another. A reason why this might happen is to improve the performance of GetHashCode.

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