what i learnt in Rust today

Today i mainly learnt following things:

• basic data types
• fn
• loops

Data Types

• char is similar to rune from GO programing language

  • it’s of size 8 bits
  • should be enclosed in ‘single quotes’
  let c: char = 'Z'; // can take any single charecter/emoji etc..
  

• arrays are similar to C programming language(fixed size, same type, accessing elements)

• array comperhension??

  let num = [1; 4]; // num = [1, 1, 1, 1]
  

  In the above code, you are basically telling repeat number 1, 4 times

• tuples are similar to tuples in python

  let tup: (i32, u32, f32) = (-32, 32, 32.0);
  println!("signed: {}, unsigned: {}, float: {}", tup.0, tup.1, tup.2);

loops

loops are pretty interesting in rust

• normal loop

  loop {
      println!("looooop!!");
  }

• named loop

  'named_loop: loop {
      println!("named loop!!");
      let mut x = 0;
  
      loop {
          println!("unnamed inner loop, x:{x}");
          x+=1
          if x==2 {
              println!("breaking from inner loop, x:{x}");
              break;
          }
  
          if x==4 {
              println!("breaking from outer named loop, x:{x}");
              break 'named_loop
          }
      }
  }
  
  // prints the following
  // named loop!!
  // unnamed inner loop, x:0
  // unnamed inner loop, x:1
  // breaking from inner loop, x:2
  // unnamed inner loop, x:3
  // breaking from outer named loop, x:4
  

• for loop

  let num = [1, 2, 3]
  for n in num {
      println!(n)
  }

MISC:

• Rust uses snake_case
• Unlike JS/Python rust does not have truthy/falsy values