From: Sam Dela Cruz <sam.dela.cruz@...>
Date: 2005-12-10T06:08:12+09:00
Subject: Re: new to Ruby - pls help in translating this

--=_alternative 007417F5882570D2_=
Content-Type: text/plain; charset="US-ASCII"

Yes, file handles must be closed.  I learned that the hard way on one of 
my projects before.  Thanks again.
Sam









mental@rydia.net 
12/09/2005 01:02 PM

To
Sam Dela Cruz/SVL/SC/PHILIPS@PHILIPS
cc

Subject
Re: new to Ruby - pls help in translating this
Classification







Quoting Sam Dela Cruz <sam.dela.cruz@philips.com>:

> Here's what I decided on using (looks more like what I originally
> posted in perl):
>
> hash = Hash.new(0)
> File.open(ARGV[0],"r").each do |line|
>     hash[line.chomp] += 1
> end
>
> hash.keys.sort.each do |key|
>     puts "#{key}: #{hash[key]}" if hash[key] > 1
> end

One caution here -- if you want the file handle to be closed when
you are finished, you must do either:

 stream = File.open(ARGV[0],"r")
 stream.each do |line|
   hash[line.chomp] += 1
 end
 stream.close

or (this is often better because it will automatically close the
handle even if there's an exception):

 File.open(ARGV[0],"r") do |stream|
   stream.each do |line|
     hash[line.chomp] += 1
   end
 end

-mental


--=_alternative 007417F5882570D2_=--