Re: Any thoughts on indexing ...?
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- Subject: Re: Any thoughts on indexing ...?
- From: Asko Kauppi <askok@...>
- Date: Wed, 9 Apr 2008 10:20:29 +0300
luaSub has a syntax mod exactly like your proposal (used by 'luas -
sselect'):
--
-- SELECT syntax mod Copyright 2006-08 Asko Kauppi
--
-- Simplifies the 'select' usage a bit, making it look less like a
function
--
-- #... -> select('#',...) number of values in ...
-- ...[n] -> (select(n,...)) value #n of ...
--
-- Note: 'select(n,...)' is still used explicitly when wanting all
values-- from 'n' onwards.
--
Alex Davies kirjoitti 9.4.2008 kello 9:38:
Hey all,
Just wondered if the following syntax is being considered at all:
for i = 1, #... do
print(...[i])
end
Imo it seems a natural extension, and less cumbersome then:
local select = select
for i = 1, select("#", ...) do
print(select(i, ...))
end
And would of course be orders of magnitude faster for large varargs.
It would also allow writing select in pure lua, something which is
currently impossible.
Still, I can see that some people may not like the syntax, just
wanted to throw it out
there anyway.
- Alex
P.S. I do realise it's a little inconsistent, as true lists will
never be indexable... eg:
local a = (1, 2, 3)[3]