From: Josselin <josselin@...>
Date: 2007-09-23T23:10:09+09:00
Subject: Nested array filling bad..

I try to fill a nested array this way

irb(main):001:0> cat_a = Array.new(7, Array.new)
irb(main):002:0> cat_a[0] << 0
=> [0]
irb(main):004:0> cat_a[1] << 1
=> [0, 1]

but it gives me back
irb(main):005:0> cat_a
=> [[0, 1], [0, 1], [0, 1], [0, 1], [0, 1], [0, 1], [0, 1]]

I would like to get back

[ [0], [1], [], [], [], [], [] ]

and adding   cat_a[0] << 9
would give

[ [0, 9], [1], [], [], [], [], [] ]

what's wrong with my array def ?

thanks