Not in Rust 1.55

In Rust, the not operator is represented by the exclamation mark symbol !. It is a logical operator that negates the result of the expression that follows it.

Here are some examples of how the not operator can be used in Rust:

// Negate a boolean value
let is_true = true;
let is_not_true = !is_true; // false
// Negate an expression

let x = 5;

let is_not_one = !(x == 1); // true
// Use not operator in if conditions

let is_false = false;

if !is_false {

    println!("This will be printed because is_false is not true");

}
// Use not operator in a loop

let mut i = 0;

while !i.eq(&5) {

    println!("{}", i);

    i += 1;

}

In the above examples, the not operator is used to negate a boolean value, an expression, and to facilitate if conditions or loops.