如何深度复制QMap等Qt容器 [英] How to deep copy QMap and other Qt containers

问题描述

一般来说，深层复制Qt容器的正确方法是什么？我不担心深入复制容器，虽然解决这样的问题是有帮助的。

Generally speaking, what is the correct way to deep copy Qt containers? I'm not worried about deep copying the containers recursively, although addressing such would be helpful.

推荐答案

尽管大家都会告诉你 - 你不深的复制Qt容器 - 有些情况下，你只需要执行一个实际的深复制，而不是只是一个浅的。为此，使用 detach（）：

Despite what everyone will tell you - that you don't deep copy Qt containers - there are situations in which you simply need to perform an actual deep copy instead of just a shallow one. To do that, use detach():

container1 = container2;
container1.detach();

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