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Re: single element lists
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From:
Larry Wall
Date:
May 11, 2005 15:07
Subject:
Re: single element lists
Message ID:
20050511220741.GA6828@wall.org
On Thu, May 12, 2005 at 05:19:11AM +0800, Autrijus Tang wrote:
: Sure (and done). Now that #1 is eliminated, the question is now
: whether a simple scalar can be treated as a small (one-element) array
: reference, much like a simple pair can be treated as a small
: (one-element) hash reference.
:
: 1.[0]; # evaluates to 1?
:
: If yes, then (1)[0] means the same as 1.[0] and 1.[0][0][0]. If no,
: (1)[0] is a runtime error just like 1.[0] -- i.e. unable to find the
: matching .[] multisub under Int or its superclasses.
Maybe we should just let someone poke a Subscriptable role into some
class or other to determine the behavior if they care.
Larry
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