Rust Logical Operator

Rust logical operator

Created By: chatGPT

Logical operators in Rust are used to combine boolean expressions. Rust provides three main logical operators: && (logical AND), || (logical OR), and ! (logical NOT). Understanding these operators is crucial for controlling program flow and making decisions within your code.

// Example of logical operators in Rust

fn main() {
    let a = true;
    let b = false;
    
    // Logical AND
    if a && b {
        println!("Both a and b are true.");
    } else {
        println!("At least one of a or b is false.");
    }
    
    // Logical OR
    if a || b {
        println!("At least one of a or b is true.");
    }
    
    // Logical NOT
    if !b {
        println!("b is false.");
    }
}

Short-circuiting is an important feature of these logical operators. In the case of &&, if the first operand is false, Rust doesn't evaluate the second operand as the entire expression can never be true. Similarly, with ||, if the first operand is true, the second is not evaluated. This behavior can improve performance by avoiding unnecessary computations.

// Example demonstrating short-circuiting

fn main() {
    let x = false;
    let result = x && (1 / 0 == 0); // The second operand is not evaluated
    
    println!("Result of short-circuiting: {}", result); // Outputs: Result of short-circuiting: false
}

You can also combine these logical operators to create more complex conditions. It's common to see them used in control flow statements such as if, while, and more. Keep in mind that the order of operations follows the standard precedence rules.

// Combining logical operators

fn main() {
    let x = 5;
    let y = 10;
    
    if (x < 10 && y > 5) || (x == 5) {
        println!("One or both conditions are true!");
    }
}