NonZero Types

Integer types ที่การันตีว่าไม่เป็น 0

NonZero Basics

use std::num::{NonZeroU32, NonZeroI32, NonZeroUsize};

fn main() {
    // Create NonZero values
    println!("=== Creating NonZero ===");

    // new() returns Option
    let nz = NonZeroU32::new(42);
    println!("NonZeroU32::new(42): {:?}", nz);

    let nz_zero = NonZeroU32::new(0);
    println!("NonZeroU32::new(0): {:?}", nz_zero);

    // new_unchecked (unsafe)
    let nz = unsafe { NonZeroU32::new_unchecked(42) };
    println!("new_unchecked(42): {}", nz);

    // Get the inner value
    println!("\nget(): {}", nz.get());

    // Signed versions
    let negative = NonZeroI32::new(-42).unwrap();
    println!("\nNonZeroI32: {}", negative.get());

    // For sizes
    let size = NonZeroUsize::new(100).unwrap();
    println!("NonZeroUsize: {}", size.get());
}