Pairing Data 2-D array

rubyonrails-talk
1

I have class A. I have a class B with attributes c and d. A has many Bs.

I get an instance of A using a = find_by....

I can get a listing (enumeration) of values for attribute b using map function.

   a.b.map{ |x| x.c}

c1 c2 c3

However, I want c and d returned and paired together in an array like a 2-d array.

c1 d1 c2 d2 c3 c3

What's the best way to do this? Map won't work, correct?

2

You can do an array of arrays:

a.b.map {|x| [x.c, x.d]}