Ruby on Rails

id = 100
arrays = [Array.new, Array.new, Array.new]
arrays.sample.push(id)

On 2014-Jul-30, at 10:59 , Eric Saupe <eric...@gmail.com> wrote:

To expand on what Scott is saying here is some code that gives an example of what he is referring to.

id = 100
x  = rand(1..3)
arrays = [Array.new, Array.new, Array.new]
selected_array = arrays[x]
selected_array.push(id)

And to make it a bit more flexible, you could do:

arrays = [ Array.new,  Array.new,  Array.new ]

x = rand(arrays.size)

arrays[x].push(id)

or even:

arrays = [ Array.new,  Array.new,  Array.new ]

arrays.sample.push(id)

http://www.ruby-doc.org/core-2.1.2/Array.html#method-i-sample

-Rob

On Tuesday, July 29, 2014 8:05:16 PM UTC-6, Scott Ribe wrote:

On Jul 29, 2014, at 7:33 PM, Dave Castellano <li...@ruby-forum.com> wrote:

> Novice question:
>
> I need to assign an item id to one of 3 arrays randomly but can't figure
> out how to specify the correct array by combining "arr" and the randomly
> generated number...
>
> id = "100"
> x = rand(1..3)
>
> arr1 = Array.new
> arr2 = Array.new
> arr3 = Array.new
>
> selected_array =  "#{'arr' + x}"  *** Not sure how to do this ****
>
> selected_array.push(id)
>

While you could append the name and eval, that's not really a clean approach. Just use an array of arrays. Or if else...


--
Scott Ribe
scott...@elevated-dev.com
http://www.elevated-dev.com/
(303) 722-0567 voice

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