Re: Indexed tables (Was: [Proposal] .name global indexing)
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- Subject: Re: Indexed tables (Was: [Proposal] .name global indexing)
- From: Peter Aronoff <telemachus@...>
- Date: 2016年3月16日 07:10:16 -0400
On Wednesday, March 16, 2016 at 10:21AM, Dirk Laurie wrote:
> Lua's table type is so general and versatile that a bit of discipline in
> its usage does not come amiss. For most of my tables, I follow the
> following rules.
>
> 1. The table is a proper sequence (§3.4.7 of the Lua 5.3 manual).
> 2. The [0] entry, if present, is an index to an arbitrary selection of
> keys, usually a string with pieces gmatching "%a%w*" but sometimes
> just a list of values.
> 3. I seldom use 'pairs'.
I think I see the use of (1) and (3), but what's the point of (2)?
Thanks.
--
We have not been faced with the need to satisfy someone else's
requirements, and for this freedom we are grateful.
Dennis Ritchie and Ken Thompson, The UNIX Time-Sharing System