How to iterate over an array? (with a counter)

[James Patterson]

Given an array, I'd like to iterate over it with a counter to produce
something like this from a template:

foo.0 = ARRAYVALUE0
foo.1 = ARRAYVALUE1
foo.2 = ARRAYVALUE2

(where ARRAYVALUEn is replaced by the value, and the foo.n is
incremented for each value)

The puppet templates support iteration, but I don't see how to also
increment a counter to get the behaviour above? Is this possible?
Thanks.

--
James Patterson
jamespa...@operamail.com

--
http://www.fastmail.fm - Or how I learned to stop worrying and
love email again

[R.I.Pienaar]

----- Original Message -----
> From: "James Patterson" <jamespa...@operamail.com>
> To: puppet...@googlegroups.com
> Sent: Wednesday, June 20, 2012 10:39:02 PM
> Subject: [Puppet Users] How to iterate over an array? (with a counter)
>
> Given an array, I'd like to iterate over it with a counter to produce
> something like this from a template:
>
> foo.0 = ARRAYVALUE0
> foo.1 = ARRAYVALUE1
> foo.2 = ARRAYVALUE2
>
> (where ARRAYVALUEn is replaced by the value, and the foo.n is
> incremented for each value)
>
> The puppet templates support iteration, but I don't see how to also
> increment a counter to get the behaviour above? Is this possible?
> Thanks.

array.each_with_index do |item, index|
...
end

item will be each item and index will increment from 0 upward

[James Patterson]

Excellent stuff! Just what I wanted!

If I wanted to sort numerically, backwards, skip numbers, do ($i=0;
$i<100; $i+2), etc, where should I read about that?

Thanks.

--
http://www.fastmail.fm - Does exactly what it says on the tin

[R.I.Pienaar]

The best place to look is the ruby docs for Array[1] and Enumberable[2]
these are the methods available to you.

Getting used to how ruby does loops and stuff can be a bit weird, it
has a for loop but not one that lets you easily tweak the itteration
count etc, you'd probably do that with a while or until for best
readability to people who dont know ruby very well.

http://www.tutorialspoint.com/ruby/ruby_loops.htm

[1] http://www.ruby-doc.org/core-1.9.3/Array.html
[2] http://www.ruby-doc.org/core-1.9.3/Enumerable.html