If/else

If-statements are very similar to how they are in Go and Rust. You don’t need parentheses around the conditions but braces around the body are required.

if x == 3 {
  // x is three
} else if y == 4 {
  // y is four
} else {
  // neither x is three or y is four
}

Expressions

Just like in Rust they are expressions and can be used to return a value when you omit the semicolon at the end of the last statement in the block.

let n = 5;
let x = if n > 0 {
  1
} else if n == 0 {
  0
} else {
  -1
};