From: Eero Saynatkari <eero.saynatkari@...>
Date: 2006-09-18T11:12:43+09:00
Subject: Splat, #to_ary and #to_a

Hi!

I suppose this just qualifies as unexpected (by me) behaviour
but an odd thing happened when I wrote code like this:

 [*"foo\nbar"]   # => ["foo\n", "bar"]

Mocking out the call sequence for the splat, it seems that
it first checks for #respond_to? :to_ary and, if so, sends
it to the object--the surprising part was that if it does
NOT respond to :to_ary, the splat simply calls #to_a on its
subject.

The idea behind the code, of course, is to have a single
expression that either constructs an Array or reproduces
the current one from whatever object we are dealing with.
This behaviour makes doing so a tad less concise :)

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