1 2 3 4 5 6 7 8 9 10 11 12 13
let a; let a: int; let a = 1; let a: int = 1; let mut a; let mut a, mut b; let (mut a, ): (int, ) = (1, ); let (mut a, mut b): (int, int) = (1, 1); let a = if b { c }