Ternary in Rust 1.55

Ternary operators are useful when we want to assign a value to a variable based on a condition.

In Rust, we can use the ternary operator by using the following syntax:

 ?  : 

Here, the is the Boolean expression that we want to check. If the condition is true, the is returned, otherwise is returned.

For example:

fn main() {
    let x = 5;
    let y = if x > 0 { "positive" } else { "negative" };
    println!("The number is {}", y);
let is_even = if x % 2 == 0 { true } else { false };

    let result = is_even ? "even" : "odd";

    println!("The number is {}", result);

}

The output of this code will be:

The number is positive
The number is odd

In the first example, we use the if statement to assign the value of y based on whether x is positive or negative.

In the second example, we use the ternary operator to assign the value of result based on whether x is even or odd. We first check whether x is even, then assign the appropriate string value to result.