Greetings, puppeteers. As per yesterday''s discussion on if a file
exists on the pupper master, I decided to write a custom function. I''m
prolific in a lot of languages unfortunately, ruby isn''t one of them.
Here''s my function:
module Puppet::Parser::Functions
newfunction(:file_exists) do |args|
filename = args[0]
return File.exists?(filename)
end
end
That seems straightforward but it barfs with the following error:
err: Could not retrieve configuration: Function ''file_exists''
does not
return a value
Seriously? The exists instance method is a boolean. What do you mean
it doesn''t return a value?
I humored it with this version:
module Puppet::Parser::Functions
newfunction(:file_exists) do |args|
filename = args[0]
if File.exists?(filename)
return true
else
return false
end
end
end
But the results were identical. Any thoughts for a ruby noob.
Jeff
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To post to this group, send email to puppet-users@googlegroups.com
To unsubscribe from this group, send email to
puppet-users+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/puppet-users?hl=en
-~----------~----~----~----~------~----~------~--~---
you are missing the type in the function.. For example: newfunction(:func, :type =>rvalue) do... Cheers, Ohad On 12/9/08, Jeff <joesiege@gmail.com> wrote:> > Greetings, puppeteers. As per yesterday''s discussion on if a file > exists on the pupper master, I decided to write a custom function. I''m > prolific in a lot of languages unfortunately, ruby isn''t one of them. > Here''s my function: > > module Puppet::Parser::Functions > > newfunction(:file_exists) do |args| > filename = args[0] > return File.exists?(filename) > end > > end > > > That seems straightforward but it barfs with the following error: > > err: Could not retrieve configuration: Function ''file_exists'' does not > return a value > > Seriously? The exists instance method is a boolean. What do you mean > it doesn''t return a value? > > I humored it with this version: > > module Puppet::Parser::Functions > > newfunction(:file_exists) do |args| > filename = args[0] > if File.exists?(filename) > return true > else > return false > end > end > > end > > But the results were identical. Any thoughts for a ruby noob. > > Jeff > > >--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Puppet Users" group. To post to this group, send email to puppet-users@googlegroups.com To unsubscribe from this group, send email to puppet-users+unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/puppet-users?hl=en -~----------~----~----~----~------~----~------~--~---
On Dec 9, 9:36 am, "Ohad Levy" <ohadl...@gmail.com> wrote:> you are missing the type in the function.. For example: > > newfunction(:func, :type =>rvalue) do... > > Cheers, > Ohad >Thanks. I had to preface rvalue with a : as in newfunction (:func, :type => :rvalue) Can anybody recommend a good english language introductory Ruby book for programmers? I know C, java, perl and php like the back of my hand but ruby seems alien. Cheers, Jeff --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Puppet Users" group. To post to this group, send email to puppet-users@googlegroups.com To unsubscribe from this group, send email to puppet-users+unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/puppet-users?hl=en -~----------~----~----~----~------~----~------~--~---
Hope this will help: http://www.rubycentral.com/book/ Rodney On Dec 9, 11:14 pm, Jeff <joesi...@gmail.com> wrote:> On Dec 9, 9:36 am, "Ohad Levy" <ohadl...@gmail.com> wrote: > > > you are missing the type in the function.. For example: > > > newfunction(:func, :type =>rvalue) do... > > > Cheers, > > Ohad > > Thanks. I had to preface rvalue with a : as in newfunction > (:func, :type => :rvalue) > > Can anybody recommend a good english language introductory Ruby book > for programmers? I know C, java, perl and php like the back of my hand > but ruby seems alien. > > Cheers, > Jeff--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Puppet Users" group. To post to this group, send email to puppet-users@googlegroups.com To unsubscribe from this group, send email to puppet-users+unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/puppet-users?hl=en -~----------~----~----~----~------~----~------~--~---