Char, Bool & Unit

Boolean

• The boolean type is specified using bool.
• Booleans are one byte in size.

fn main() {
    // boolean data type inferred 
    let y = false;

    // explicit type annotation
    let x: bool = true; 
}

Character

• The character type is specified using char.
• Characters are 4 bytes in size.
• char is specified with single quotation marks.

fn main() {
    // character data type inferred 
    let c = 'z';
    let heart_eyed_cat = '😻';

    // with explicit type annotation
    let z: char = 'ℤ'; 
}