Re: Function environment table interface
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- Subject: Re: Function environment table interface
- From: Rob Kendrick <lua-l@...>
- Date: Tue, 7 Jul 2009 00:21:43 +0100
On 2009年7月06日 17:44:07 -0400
Doug Rogers <doug.rogers@elbitsystems-us.com> wrote:
> IMHO, the short reply to the original question is "performance".
> Requiring the attachment of a metatable for __env would levy the
> overhead of a table lookup, possibly a chain of them due to __index,
> for each function call.
Or at least each function call to a function that had a metatable; a
check for such a thing shouldn't be expensive, and short-circuiting
things like this has been discussed before.
B.