From: Albert Schlef <albertschlef@...>
Date: 2008-12-28T23:52:35+09:00
Subject: Ruby gives some warning

(I'm using Ruby 1.8.6.)

The following expression...

  rand(rand 3)

...makes ruby emit a warning: "warning: parenthesize argument(s) for
future version"

It seems that I have to write is as "rand(rand(3))". Why? What potential
problem could there be in "rand(rand 3)" ?
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