Re: Next Version of Lua?
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- Subject: Re: Next Version of Lua?
- From: Olivier Hamel <evilpineapple@...>
- Date: 2009年6月10日 07:52:00 -0400
Henk Boom wrote:
local tbl = {... ..., 7, 8, 9}
would be a bit strange, no?
Henk
(I've just realized I wrote ReturnSixIncrementalValuesFromZeroToSix()
instead of ReturnSixIncrementalValuesFromOneToSix(), oops!)
Well, we need a way to expand and insert all the args of the cmd into a
table, it's a very useful feature IMHO, and I was bitten quite a few
times when I started working with Lua tables for the first time.
Personally I think it makes more sense for all the arguments to be pass
out, but then it makes it very hard I guess to handle cases like:
local varA, varB = FooTwoNums() + 5
Do you add five to the first or the second number? Or both? What happens
if there are more returns then there are allocations? Do we do a mass
additional on all of them SIMD style (though obviously not actual SIMD
code)? What if the type of the values aren't a number? Do we move on to
the next return value? Do we error? Or do we do nothing?
Although I guess that SIMD thing could be nifty in some cases, you know,
mass applying a set of ops on multiple values at once. If the parser
could take that into account I'm all but certain it would be possible to
do a micro-optimization at that point. Then again, the vanilla Lua
compiler isn't an optimizing compiler according to the wiki.
Olivier