From: Aa Aa <banditgsf600n@...>
Date: 2008-05-04T07:02:22+09:00
Subject: Re: Ruby Class documentation

 > In the upper lefthand corner there is Parent: IO, and IO is a
> hyperlink to IO documentation.
> IO contains the close method.

Thanks, I probably missed that because it doesn't look like something 
you can click on :)

> Related to this:
> 
> It's usually better to use block form of File.open, than File.new and
> File#close.
> i.e.
> instead of
> 
> f = File.new('xxxx',''w')
> f << "dfsdfsd"
> f.close
> 
> do
> 
> File.open('xxxx','w') do |f|
>   f << "fdfdsfsdf"
> end
> 
> The file will be closed when the control exits from the block (even in
> the case of an exception).
> 
> File.new is usually used when you need to keep the file open longer
> than a scope of one method.
> (setting a member/attribute, returning open file from a method, etc.)
> 
> J.

Really useful tip, looks similar to the C# using statement.
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