From: Ezra Zygmuntowicz <ezmobius@...>
Date: 2007-06-07T10:47:58+09:00
Subject: Re: Globals not incrementing inside block


On Jun 6, 2007, at 6:34 PM, Todd A. Jacobs wrote:

> I have the following snippet:
>
>     at_exit do
> 	$total_count, $daily_count = 0, 0
> 	IO.foreach(my_logfile) do |line|
> 	    $total_count.next
> 	    $daily_count.next if line =~ /^#{Time.now.strftime('%Y%m%d')}/
> 	end
> 	printf("\ns Total: %d\ns Today:%d\n", $total_count,
> 	    $daily_count)
>     end
>
> I assumed I had to use globals, since otherwise the block would treat
> the counters as local variables, but I have the same problem either  
> way:
> the counters never increase. They still both read zero at the end  
> of the
> script, even though some strategic puts statements show that the  
> file is
> successfully being read.
>
> What newbie mistake am I making now?
>
> -- 
> "Oh, look: rocks!"
> 	-- Doctor Who, "Destiny of the Daleks"
>

	
	$total_count.next does not increment $total_count  try this instead:

$total_count += 1

Cheers-

-- Ezra Zygmuntowicz 
-- Lead Rails Evangelist
-- ez@engineyard.com
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