Re: [Puppet Users] Re: Puppet 3.2: add element to array
On 2013-24-10 11:19, Erik Dalén wrote:
It is possible in a lot of puppet versions but it is a bug and might get
fixed.
$a = [1,2]
$a[2]=3
notice($a)
It is a bug that is planned to be fixed in Puppet 4. (It cannot be
changed in the 3.x series as it would potentially be a breaking change).
Yes, we are serious about semver :-)
The future parser (and hence also in Puppet 4) allows concatenation of
array (and merge of hash) to a *new* variable otherwise variables are
strictly immutable.
Regards
- henrik
On 22 October 2013 15:20, jcbollinger mailto:john.bollin...@stjude.org>> wrote:
On Monday, October 21, 2013 1:21:18 PM UTC-5, Sergey Arlashin wrote:
Hi!
Is it possible to add a new element to an array inside puppet
manifest ? Something like ruby's array.push('new_element') ?
No, it isn't. It is a fundamental principle of Puppet that
variables' values cannot be changed once set..
In particular, the += operator Daniele refers to does not do quite
what she supposes: it sets the initial value of a local variable by
appending data to the value of a /separate/ variable of the same
name at top scope, node scope, or a parent scope
(http://docs.puppetlabs.com/puppet/3/reference/lang_variables.html#appending-assignment).
That may be sufficient for your needs, but it is not what you
actually asked, and I would not expect the code Daniele presented to
work.
John
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Re: [Puppet Users] Re: Puppet 3.2: add element to array
It is possible in a lot of puppet versions but it is a bug and might get
fixed.
$a = [1,2]
$a[2]=3
notice($a)
On 22 October 2013 15:20, jcbollinger wrote:
>
>
> On Monday, October 21, 2013 1:21:18 PM UTC-5, Sergey Arlashin wrote:
>>
>> Hi!
>> Is it possible to add a new element to an array inside puppet manifest ?
>> Something like ruby's array.push('new_element') ?
>>
>>
>
> No, it isn't. It is a fundamental principle of Puppet that variables'
> values cannot be changed once set.
>
> In particular, the += operator Daniele refers to does not do quite what
> she supposes: it sets the initial value of a local variable by appending
> data to the value of a *separate* variable of the same name at top scope,
> node scope, or a parent scope (
> http://docs.puppetlabs.com/puppet/3/reference/lang_variables.html#appending-assignment).
> That may be sufficient for your needs, but it is not what you actually
> asked, and I would not expect the code Daniele presented to work.
>
>
> John
>
> --
> You received this message because you are subscribed to the Google Groups
> "Puppet Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
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>
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Erik Dalén
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[Puppet Users] Re: Puppet 3.2: add element to array
On Monday, October 21, 2013 1:21:18 PM UTC-5, Sergey Arlashin wrote:
>
> Hi!
> Is it possible to add a new element to an array inside puppet manifest ?
> Something like ruby's array.push('new_element') ?
>
>
No, it isn't. It is a fundamental principle of Puppet that variables'
values cannot be changed once set.
In particular, the += operator Daniele refers to does not do quite what she
supposes: it sets the initial value of a local variable by appending data
to the value of a *separate* variable of the same name at top scope, node
scope, or a parent scope
(http://docs.puppetlabs.com/puppet/3/reference/lang_variables.html#appending-assignment).
That may be sufficient for your needs, but it is not what you actually
asked, and I would not expect the code Daniele presented to work.
John
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[Puppet Users] Re: Puppet 3.2: add element to array
HI,
It should be possible to do something like this:
$users = [a,b,c]
$users += [d,e]
Or, $users = [[a,b,c] [d,e]] etc.
Perhaps a better question, what is it you're trying to do, exactly, that
you need this?
--
Daniele Sluijters
On Monday, 21 October 2013 20:21:18 UTC+2, Sergey Arlashin wrote:
>
> Hi!
> Is it possible to add a new element to an array inside puppet manifest ?
> Something like ruby's array.push('new_element') ?
>
> --
> Best regards,
> Sergey Arlashin
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