From: Nasir Khan <rubylearner@...>
Date: 2007-09-08T03:44:29+09:00
Subject: nil.to_s

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IMHO nil.to_s => "", nil.to_i => 0 and nil.to_a => [] are potential sources
of confusion and bugs.

If anywhere in your code you have statement like

x = y.to_s then you will have to be careful to replace it with
x = y.nil? ? nil : y.to_s

An empty string equivalence of nil seems untuitive to me, all of these
should just return nil.
Is it just me or are there others who have also feel like this?

Thanks
Nasir

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