From: James Dinkel <jdinkel@...>
Date: 2009-05-02T05:39:57+09:00
Subject: Re: Read and re-write file with one open?

Aw, word wrapping broke some of my lines...

these should be single lines:

> ### for example, an assignemt "contents = 'new data'" will break the method


> File.open(filename, 'w') { |blank| blank.write '' } unless File.exist?(filename)


> # do not write the file if it did not change (block must "throw :nochanges")


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