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How would our code change if a member function could deduce the type and value category of the object ("this") it worked on?
Potentially a lot, and this talk will highlight some of those changes. Because with C++23, member functions will be able to do just that using a feature described in P0847, "Deducing this". Many patterns in C++ today could change, and new patterns will arise. This talk will explore those patterns, explain how "deducing this" works, and show how it solves the problems that originally motivated the paper.
Some sample effects on our code: CRTP is simplified; decorators become much easier and terser; recursive lambda expressions become straightforward. There are also implications for safely and efficiently moving values through computations.
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Ben Deane
Ben was a game programmer for over 20 years, working in C++ since the late 90s, for companies like EA and Blizzard. In 2018 he left the games industry to join Quantlab, an automated trading firm, where he writes modern, well-performing C++. He likes to play with algorithms, and to make the type system work for him, and he’s always looking for useful new techniques. Ben is the presenter of several previous C++Now and CppCon talks.
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