Re: Proposal: table.sort returning the sorted table.
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- Subject: Re: Proposal: table.sort returning the sorted table.
- From: steve donovan <steve.j.donovan@...>
- Date: 2011年4月11日 12:47:08 +0200
On Mon, Apr 11, 2011 at 12:17 PM, David Kastrup <dak@gnu.org> wrote:
> Intelligence needs restraint, or its potential is locked away behind the
> event horizon of incomprehensibility.
Amen!
In particular, chaining functions with this kind of side-effect is
always a recipe for potential disaster.
l2 = l1:sort():map(string.upper)
Quick question: has l1 been modified?
You have to be awake with this apparently simple expression if the
methods have mixed semantics, e.g if sort() modifies its object
in-place and map returns a new list. (Naturally, I have been guilty
of this sin before.)
steve d.