module main fn shuffle_impl[T](mut a []T) ? { println('FN: ${@FN:20} | T: ${typeof(a).name}') } fn shuffle[T](mut a []T) ? { println('FN: ${@FN:20} | T: ${typeof(a).name}') shuffle_impl(mut a)? } fn main() { mut a := [1, 2] mut b := [f64(1.0), 2.0] shuffle(mut a)? shuffle(mut b)? }