MultiMap vs MultiValue Map [英] MultiMap vs MultiValue Map

问题描述

在某个地方，我必须使用映射到单个键的许多值的地图，所以我想知道使用 HashMap，列表和之间是否存在显着的性能差异

解决方案

你可以尝试一下，但我怀疑有很大的区别，因为它做的事情也是一样的。

IMHO优点是更简单/更清晰的代码，通常比性能更重要。

At one place i have to use a map with many values mapped to a single key, so i was wondering whether there is any significant performance distinction between using HashMap of key, list and MultiMap of key , values in java.

解决方案

You can try it but I doubt there is much difference as it does much the same thing.

IMHO The advantage is simpler/clearer code which is usually more important than performance.

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