Beginning Rust: Get Started with Rust 2021 Edition

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022

C. MilanesiBeginning Rusthttps://doi.org/10.1007/978-1-4842-7208-4_22

22. Ownership, Moves, and Copies

Carlo Milanesi¹  

(1)

Bergamo, Italy

 

In this chapter, you will learn:

• Why deterministic and implicit destruction of objects is a big plus of Rust

• The concept of ownership of objects

• The three kinds of assignment semantics: share semantics, copy semantics, and move semantics

• Why implicit share semantics is bad for software correctness

• Why move semantics may have better performance than copy semantics

• Why some types need copy semantics and others do not

• Why some types need to be noncloneable

• How to specify that a type must use copy semantics

• How to specify that a type ...