From: Joel VanderWerf <vjoel@...>
Date: 2003-04-24T14:58:17+09:00
Subject: Re: parsing large file into matrix

Qubert wrote:

> Is there a Ruby-way of creating an m by n array from the beginning?
> I know the following doesn't work but something like it code would be nice:
> x = File.open("file.txt").readlines.split('\t')

How about this?

  x = File.open("file.txt").readlines.
        map {|line| line.chomp.split("\t").
                      map {|s|s.to_f}}

Note that "\t" is necessary so that you get an actual tab char.