Rust Quick Start Guide

Operator expressions

Again, like math, Rust has a number of symbolic operators that can be applied to values to transform them into some new value. For example, + is a Rust operator that adds two values together. So, 2 + 2 is a Rust expression adding the number 2 to itself, producing the number 4. Rust also uses - as the subtraction operator, * as the multiplication operator, / as the division operator, and % as the remainder operator.

Rust is not limited to mathematical operators, though. In Rust, & means and, | means or, ^ means exclusive or, ! means not (!true is false, for example), << means leftward bit shift, and >> means rightward bit shift. Sometimes the meanings of those operations depends on the type of value that they're acting ...