From: George George <george.githinji@...>
Date: 2009-06-15T21:12:12+09:00
Subject: Re: formatting a listing

Robert Dober wrote:
> On Mon, Jun 15, 2009 at 12:46 PM, George
> George<george.githinji@gmail.com> wrote:
>> 3
>> any ideas?
>> thanks
> 
> If this is a homework assignement I am terribly sorry, but I cannot 
> know.
> 
> puts DATA.inject( [  [] ] ){ | ary, ele |
>   ele.strip.empty? ? ary << [] : ary.last << ele.to_i # or ele.chomp
> if you prefer
>   ary
> }
> .reject( &:empty? )  # .map( &:join, ", " ) is not standard Ruby
> .map{ | eles | eles.join( ", " )}
> 
> __END__
> 1
> 2
> 
> 42
> 44
> 46
> 
> 2000
> 
> HTH
> Robert

Thank so much for pointing the way: And this is not assignment! :) Am 
working on some huge datasets that run in to up to 20 000 columns and 
was looking for an easy way of creating the columns.


puts DATA.inject( [  [] ] ){ | ary, ele |
  ele.strip.empty? ? ary << [] : ary.last << ele.to_i # or ele.chomp
#if you prefer
#  ary
}
#.reject( &:empty? )  # .map( &:join, ", " ) is not standard Ruby
#.map{ | eles | eles.join( ", " )}

__END__
1
2

42
44
46

am not trying to ask too much but your code is real witchcraft :)
raises an error
`<<': can't convert Array into Integer (TypeError)
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