import "iter"

$fn = func($x) { # notable because concrete type is fn(t1) t2, where t1 != t2
	len($x)
}

$in1 = ["a", "bb", "ccc", "dddd", "eeeee",]

$out1 = iter.map($in1, $fn)

$t1 = template("out1: {{ . }}", $out1)

test $t1 {}