Rust - Tipos de variables

var.rs

// Functions
pub fn suma(a: i32, b: i32) -> i32 {
    a + b
}

fn resta(a: i32, b: i32) {
    let r: i32 = a - b;
    println!("Result {:?}", r);
}


// Variable Bindings
fn main {
  
  let a = 5;

  let mut b: i32 = 4;
  
  b = 10;

  let (x, y) = (5, 6);
  
}

// Primitive Types
fn main {
    
  // Booleans
  let x = true;

  let y: bool = false;
  
  // Char
  let x = 'x';
  
  let two_hearts = '💕';
  
  // Numeric
  let a = 5;
  
  let y = 1.0; //64-bit floating f64
  
  //Array
  let mut m = [1,3,5];

  m[0] = 1;
  m[1] = 6;

  println!("Array {:?}", m);
  
  // Slice Array
  let a = [0, 1, 2, 3, 4];
  
  let complete = &a[..];
  
  let middle = &a[1..4];
  
  println!("Complete {:?}", complete);

  println!("Middle {:?}", middle);
  
  // Tuples
  let tuple = (1, "hello");
  
  let b: (i32, &str) = (1, "hello");
  
  let x = tuple.0;
  
  let y = tuple.1;
  
  println!("x es {}", x);
  
}