Re: Infinity as index
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- Subject: Re: Infinity as index
- From: Elias Barrionovo <elias.tandel@...>
- Date: 2014年4月24日 12:20:32 -0300
On Wed, Apr 23, 2014 at 2:56 PM, Lukas Prokop <admin@lukas-prokop.at> wrote:
> 1. Shall inf, -inf and -nan be allowed as indices for strings?
Lua strings are finite sequences of characters (bytes), so indexing
them with infinity, IMHO, should return nil, empty string (like
indexing a nonexistant position) or blow up an error. Indexing with
nan makes no sense at all, so error or nil + msg.
In any case, I do think the current behaviour, though following
perfectly sensible GIGO guidelines, may lead to subtle bugs and
therefore should be changed at the library level.
--
NI!
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