import "golang"
import "iter"

#import "fmt"
#import "datetime"
#$str_now = fmt.printf("%d", datetime.now())

$fn = func($x) { # notable because concrete type is fn(t1) t2, where t1 != t2
	#len($x)
	#$x + $str_now
	#$x + fmt.printf("%d:%d", len($x), datetime.now())
	$x
}

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

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

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

print $out1 {}
#print [$t1,] {}