Beginning Rust: From Novice to Professional

© Carlo Milanesi 2018

Carlo MilanesiBeginning Rusthttps://doi.org/10.1007/978-1-4842-3468-6_3

3. Naming Objects

Carlo Milanesi¹ 

(1)

Bergamo, Italy

 

In this chapter, you will learn:

• The concepts of “value”, “object”, and “variable”

• The concept of “mutability” of variables

• The difference between initialization and re-assignment

• How to avoid warnings for unused variables

• The concept of “Boolean expression”

• Which type checks are performed by the compiler for assignments

• How some operators can perform both an arithmetic operation and an assignment

• How to invoke functions defined in the Rust standard library

Associating Names to Values

So far, we have seen three kinds of values: strings, integer numbers, and floating-point numbers .

But values should not be confused ...