gistfile1.txt

$ips = ["1.2.3.4", "5.6.7.8"]

define print { notify{$name: } }

$a = map($ips) |$ip| { "http://${ip}:12900/" }

print{$a: }

gistfile2.txt

% puppet apply test.pp --parser=future
Notice: Compiled catalog for devco.net in environment production in 0.70 seconds
Notice: http://1.2.3.4:12900/
Notice: /Stage[main]/Main/Print[http://1.2.3.4:12900/]/Notify[http://1.2.3.4:12900/]/message: defined 'message' as 'http://1.2.3.4:12900/'
Notice: http://5.6.7.8:12900/
Notice: /Stage[main]/Main/Print[http://5.6.7.8:12900/]/Notify[http://5.6.7.8:12900/]/message: defined 'message' as 'http://5.6.7.8:12900/'
Notice: Finished catalog run in 0.03 seconds