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How to convert array to comma separated string in Puppet 2.7

I am using Puppet 2.7 and I need to convert an array to comma separated list.

$hosts_fqdn= ['host1','host2','host3']

And I need to convert it to desired result: 'host1,host2,host3'

I guess that Puppet 3.2 offers lambda expression - reduce. But unfortunately that is not possible with 2.7.

Solution

  • Function join from puppetlabs/stdlib:

    join($hosts_fqdn,',')