Re: Next Version of Lua?

[Duncan Cross <duncan.cross@...>]

On Wed, Jun 10, 2009 at 12:40 PM, Henk Boom<henk@henk.ca> wrote:
> 2009/6/10 Duncan Cross <duncan.cross@gmail.com>:
>> On Wed, Jun 10, 2009 at 11:24 AM, Luiz Henrique de
>> Figueiredo<lhf@tecgraf.puc-rio.br> wrote:
>>>> local tbl = {ReturnSixIncrementalValuesFromZeroToSix(), 7, 8, 9} -- this
>>>> would equate to doing {1, 2, 3, 4, 5, 6, 7, 8, 9}
>>>
>>> This is a bad idea.
>>
>> I had an idea for an explicit syntax for this, that overloads the ... operator:
>>
>> local tbl = {SixValues()..., 7, 8, 9}
>>
>> - so that, if the "..." keyword immediately follows an expression that
>> could resolve to multiple values within a comma separated list, they
>> are expanded. I can't see any way that this could be ambiguous, but I
>> haven't thought about it all that much, so maybe I am wrong. It also
>> kind of makes sense as "..." already means "accomodate a variable
>> number of values", but in this case it would mean a variable number of
>> *return* values rather than arguments.
>>
>> -Duncan
>>
>
> local tbl = {... ..., 7, 8, 9}
>
> would be a bit strange, no?
>
>    Henk
>

Er, yes. Good point.

Maybe it could expand parenthesised expressions as well, so (...)... ?
Is that not quite as bad?

-Duncan