Comments on: Programming With Ruby Episode 7, Arrays

By: Tyler

Tyler — Thu, 09 Feb 2012 03:56:39 +0000

The new array is the return value of the #collect method. Since we don’t do much with that return value, the new array is simply displayed in IRB. To put this new array into a variable, we could just add something like:

twice = numbers.collect do |number| number*2 end

And then the variable twice would hold [2,4,6,8].

And indeed you are correct, I’ll fix the transcript. Thanks for that!

By: Akash

Akash — Fri, 03 Feb 2012 00:28:07 +0000

A couple of questions and corrections.

When you do this:

numbers=[1,2,3,4]
numbers.collect do |number|
number*2
end

The output that is given is 2,4,6,8 which is fine. Where is this array stored though? The numbers array doesnt change, and “number” doesn’t seem to be an array either.

Also you forgot to include “.collect” in the Transcript