Rails - Jan 2008 - Troubles having arrays of objects inside a class

# My goal for the following function is to make an array of objects, and
then
# make a new object that containts this list of objects. And to be able
to
# see that it works a function that goes trough each element of objects.
# Does not work :-( Any ideas ?


  # I have a an hash with objects and a class with these objects
loaded_plugins = {}
loaded_plugins[0] = Class.new
loaded_plugins[1] = Class.new
loaded_plugins[2] = Class.new

class Scan
   @plugins

   def initialize(block) { @plugins = block }

   def rubyfunc
     each_item do |item|
       puts "Rubyforum"
     end
   end
   def each_item(&block) { block.call(@plugins) }
end

  # And I send this array(loaded_plugins) to a class:

scan = Scan.new(loaded_plugins)
scan.rubyfunc


=> "Rubyforum" (Once, not three times)
-- 
Posted via http://www.ruby-forum.com/.

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On 24 Jan 2008, at 15:33, Andreas Secret wrote:
>
> # My goal for the following function is to make an array of objects,  
> and
> then
> # make a new object that containts this list of objects. And to be  
> able
> to
> # see that it works a function that goes trough each element of  
> objects.
> # Does not work :-( Any ideas ?
>
>
>  # I have a an hash with objects and a class with these objects
> loaded_plugins = {}
> loaded_plugins[0] = Class.new
> loaded_plugins[1] = Class.new
> loaded_plugins[2] = Class.new
>
> class Scan
>   @plugins
>
>   def initialize(block) { @plugins = block }
>
>   def rubyfunc
>     each_item do |item|
>       puts "Rubyforum"
>     end
>   end
>   def each_item(&block) { block.call(@plugins) }
> end
>
>  # And I send this array(loaded_plugins) to a class:
>
> scan = Scan.new(loaded_plugins)
> scan.rubyfunc
>
>
> => "Rubyforum" (Once, not three times)
That''s not surprising - you''re only calling the block once
(and your
passing in the hash).
You probably want each_item to read
@plugins.each {|plugin| block.call(plugin)}

Fred
>
>
> -- 
> Posted via http://www.ruby-forum.com/.
>
> >

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Frederick Cheung wrote:
> On 24 Jan 2008, at 15:33, Andreas Secret wrote:
> 
>>
>>   def initialize(block) { @plugins = block }
>>
>>   def rubyfunc
>>     each_item do |item|
>>       puts "Rubyforum"
>>     end
>>   end
>>   def each_item(&block) { block.call(@plugins) }
>> end
>>
> 
>>  # And I send this array(loaded_plugins) to a class:
>>
>> scan = Scan.new(loaded_plugins)
>> scan.rubyfunc
>>
>>
>> => "Rubyforum" (Once, not three times)
> 
> That''s not surprising - you''re only calling the block
once (and your
> passing in the hash).
> You probably want each_item to read
> @plugins.each {|plugin| block.call(plugin)}
> 
> Fred
Great, good point!

What if I want to access that certain objects functions ? (i.e.
not having a hash, but converting it back to a real class)
=> Changing the inside function from above:

...

def rubyfunc
  each_item do |item|
       item.get_another_function(self)    <- Wouldn''t work
    end
end

-- 
Posted via http://www.ruby-forum.com/.

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