ref: cf9651df0886dc8a4c0fbc6da8488606e1e85c31
dir: /test/patiter.myr/
use std const main = { /* should print 1,3,5, skipping 4 */ for (1,x) in [(1,2),(1,3),(2,4),(1,5)] std.put("{}", x) ;; /* should print 1, 2 skipping `None */ for `std.Some v in [`std.None, `std.Some 1, `std.Some 2] std.put("{}", v) ;; std.put("\n") }