Beginning C++20: From Novice to Professional

© Ivor Horton and Peter Van Weert 2020

I. Horton, P. Van WeertBeginning C++20https://doi.org/10.1007/978-1-4842-5884-2_18

18. Move Semantics

Ivor Horton¹  and Peter Van Weert²

(1)

Stratford-upon-Avon, Warwickshire, UK

(2)

Kessel-Lo, Belgium

 

This chapter complements and completes several key topics discussed in the middle parts of the book. In Chapters 12 and 13, for instance, you gained insight into the mechanics behind the copying of objects, that is, copy constructors and assignment operators. And from Chapter 8 you know to prefer pass-by-reference over pass-by-value to avoid undue copying of parameters. And for a long time, that was basically all you needed to know. C++ offered facilities to copy objects, and if you wanted to avoid costly copies, ...