; Basic if expressions.
if true "hello"

; These can produce values and the result bound to a name.
let a = if (2 + 2 >= 4) 42

; We support a single if expression.
let b = if 0xff == 255 "hello" else "world"

; ... but these can compound on each other
if 1 < 2        6
else if 1 > 2   7
else            8

; A block is an expression, and if raise the scope level regardless if a block
; is used or not.
if true != false {
    let a = "yo"
}