From: Eric Hodel <drbrain@...7.net>
Date: 2007-10-11T17:19:39+09:00
Subject: Re: Why does this use a block

On Oct 11, 2007, at 24:12 , Anonymous wrote:
> So I'm new to Ruby and I'm trying to use OptionParser to parse in some
> command line arguments. I looked at some documentation on  
> OptionParser and there is something that's confusing me to no end.  
> In all the examples a block is being passed in to the constructor  
> of the OptionParser object. The constructor simply makes a yield  
> call, passing self as an argument.
>
> What is the point of this? Can we not convert
>
> opts = OptionParser.new() {|opts| body}
>
> To
>
> opts = OptionParser.new()
> body
>
> ? This seems more natural to me. But the former seems like a common  
> Ruby idiom so I'm wondering what I am missing.

It works both ways.  Blocks are pretty, so people use them.

--
Poor workers blame their tools. Good workers build better tools. The
best workers get their tools to do the work for them. -- Syndicate Wars