The Hidden Secrets of Move Semantics
summary
Shows concrete code and measurements: copying vs moving strings with addresses printed, examples proving const disables move, and a container implementation that uses overloads, perfect forwarding, fold expressions and lambdas to support many cases. Explains surprising pitfalls: universal vs forwarding refs (same && syntax) and range-for lifetime bug with temporaries and vector<bool> proxies. Recommends patterns: when to take by value and std::move, when to provide ref-qualified getters and use requires/decltype to enforce behavior.
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chapters (7)
- 0:00Move semantics basics
- 21:53Perfect forwarding
- 35:01Universal references in practice
- 35:49Common move semantics traps
- 41:47Getter best practices
- 50:06Summary and conclusion
- 53:54Q&A session
