std::exchange Patterns: Fast, Safe, Expressive, and Probably Underused--Ben Deane

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std::exchange Patterns: Fast, Safe, Expressive, and Probably Underused

by Ben Deane

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This blog post has been a long time in the making. I gave a lightning talk on std::exchange at CppCon 2017; Jonathan first asked me to write something about std::exchange in January 2019; now here we are in the strange days of the second half of 2020. But although much has changed in the outside world, I would guess that not much has changed in most C++ codebases and in the minds of many C++ programmers with respect to using std::exchange. It could still do with more publicity and more recognition of potential use cases...

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