From: Nobuyoshi Nakada <nobu.nokada@...>
Date: 2003-01-23T21:43:11+09:00
Subject: Re: Feature request: Array.to_h (2nd part!)

Hi,

At Thu, 23 Jan 2003 19:43:33 +0900,
NAKAMURA, Hiroshi <nahi@keynauts.com> wrote:
> > Isn't there a CSV processing library available?  I imagine an API
> > would provide hash-like access:
> > 
> >   data = CSV.new(filename)
> >   data.each do |record|
> >     # access record[:year], etc.
> >   end
> 
> There is a csv processing module here:
> http://www.ruby-lang.org/raa/list.rhtml?name=csv
> But it doesn't do anything special treatment about
> "the first line as column header."  You must write like below now.

If it is possible to override Row definition in particular
subclass/instance, you could write like this.

  require 'csv'

  csv = CSV.open(filename, "r")
  (csv.row_class = Class.new(CSV::Row)).class_eval do
    csv.shift.each_with_index do |name, idx|
      define_method(name) {at(idx)}
      # class_eval("def #{name} at(#{idx})")
    end
  end
  csv.each do |record|
    p record.year
  end

-- 
Nobu Nakada