Cmp Functions

Comparison functions และ utilities

min และ max

use std::cmp::{min, max};

fn main() {
    // Basic usage
    println!("=== min / max ===");
    println!("min(5, 10): {}", min(5, 10));
    println!("max(5, 10): {}", max(5, 10));

    // With expressions
    let a = 42;
    let b = 17;
    let c = 28;

    println!("\nMultiple values:");
    println!("max of three: {}", max(max(a, b), c));
    println!("min of three: {}", min(min(a, b), c));

    // Chained
    let values = [5, 2, 8, 1, 9, 3];
    let max_val = values.iter().copied().max().unwrap();
    let min_val = values.iter().copied().min().unwrap();

    println!("\nFrom iterator:");
    println!("max: {}", max_val);
    println!("min: {}", min_val);

    // With Option
    let maybe_a: Option<i32> = Some(5);
    let maybe_b: Option<i32> = Some(10);

    println!("\n=== Option Comparison ===");
    println!("min(Some(5), Some(10)): {:?}", min(maybe_a, maybe_b));
    println!("max(Some(5), None): {:?}", max(Some(5), None));
    // None < Some for any value
}