Puppet: concatenate existing variable to make new variable

Oftenly, we have to need to create a new variable by concatenating two existing variable. Below is some of way we can do.

CODE:

  1 $first = 'jelly'
  2 $last = 'fish'
  3 $full = "$first$last"
  4 notice("I am $full")

OUTPUT

Notice: Scope(Class[main]): I am jellyfish

Modify code in a different way to see how it change output.    

CODE:

$full = "${first}$last"

OUTPUT:  

Notice: Scope(Class[main]): I am jellyfish

CODE:

$full = "${first}${last}"

OUTPUT: 

Notice: Scope(Class[main]): I am jellyfish

CODE:

   

$full = "${first}_${last}"

OUTPUT: 

Notice: Scope(Class[main]): I am jelly_fish

CODE:

  1 $first = ['jelly', 'start']  # Now, it is list

  2 $last = 'fish'

OUTPUT: ( Possibly, this is not what you want to use)

Notice: Scope(Class[main]): I am [jelly, start]_fish

CODE: Looping using each does not work on Puppet 3

$first = ['jelly', 'star']

$last = 'fish'

$first.each | $name | {

  $full = "${name}_${last}"

  notice("I am $full")

}

OUTPUT:

Notice: Scope(Class[main]): I am jelly_fish

Notice: Scope(Class[main]): I am star_fish