Comma operator

[LytixDev]

what I want

# here a and b must be undefined
var a, b = 1, 2

var a, b = '1, 2'

var a, b = [1, 2]

var a, b = @["1": 1, "2": 2]

# here a and b must be defined
var t = '1, 2'
$a, $b = $t