str Functions

Functions สำหรับ string slices (&str) ใน Rust รวมถึง searching, slicing, และ manipulation

1. Basic String Operations

Methods พื้นฐานสำหรับตรวจสอบ strings

Basic Checks

fn main() {
    let s = "Hello, World!";

    // Length
    println!("Length: {} bytes", s.len());
    println!("Chars: {}", s.chars().count());

    // Empty check
    println!("Is empty: {}", s.is_empty());

    // Contains
    println!("Contains 'World': {}", s.contains("World"));
    println!("Contains 'Rust': {}", s.contains("Rust"));

    // Starts/ends with
    println!("Starts with 'Hello': {}", s.starts_with("Hello"));
    println!("Ends with '!': {}", s.ends_with("!"));
}