Re: string:sub

[Philippe Lhoste <PhiLho@...>]

On 06/03/2010 20:40, joao lobato wrote:
> I suppose it would be better all around if string.sub only accepted
> non-null integers as indices

Yes, but unlike some languages like Java, which prefer to hold the hand 
of users (might be useful in large projects, I reckon), Lua's 
philosophy, not unlike C's one, is: "garbage in, garbage out".
Ie. most functions just don't check validity of input, relying on 
intelligence of programmers to provide valid data. At the risk of 
crashing or having undefined behavior (security breaches...). But 
skipping such checking was valuable on 1MHz processors, meaning higher 
speed. :-)

--
Philippe Lhoste
--  (near) Paris -- France
--  http://Phi.Lho.free.fr
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