张洪亮 2021-02-13 17:52 材料西芹开发者_运维百科，木耳，虾，红椒，大蒜做法1、虾去头和壳，挑出虾线，洗净，控干水分，用料酒和淀粉腌制一下。2、木耳提前用水泡发，洗净，去蒂，撕成小块；西芹洗净，切成块
I would like to copy the content of one std::map into another. Can I use std::copy for that? Obviously, the following code won\'t work:
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