RE: Default value in function parameters?

["Grellier, Thierry" <t-grellier@...>]

Well a problem is that otherwise should be mandatory or we shouldn't put comma after when conditions because this can be a trouble for the grammar rule reduction.

-----Original Message-----
From: lua-bounces@bazar2.conectiva.com.br [mailto:lua-bounces@bazar2.conectiva.com.br] On Behalf Of Philippe Lhoste
Sent: Wednesday, September 20, 2006 10:55 AM
To: lua@bazar2.conectiva.com.br
Subject: Re: Default value in function parameters?

Rici Lake a écrit :
> On 19-Sep-06, at 11:45 AM, Grellier, Thierry wrote:
>> So, I would prefer to be able to write something like (VHDL flavor, and
>> yet another even more disturbing keyword :-) knowing that if elseif...
>> could be reused)
>> style = "native"
>> a = { a = 1,
>>       b = { b = 2,
>>             c = 1 when style == "native",
>>                 2 when style == "rock",
>>                 0 else
>>           }
>>      }
> 
> I actually like "when" (although i use it with "otherwise" because 
> "else" is already in use).

And I find it clearer, I searched something after the else... Sounds 
corny. Of course, that's more keywords...

> But more Lua like would be:
> 
> a = { a = 1,
>       b = { b = 2,
>             c = {native = 1, rock = 2}[style] or 0
>           }
>     }

Argh! WOULD BE! I tried it, and wondered by I had syntax errors...
Indeed, it seems a bit strange at first, but it is quite elegant in its 
simplicity (and no new keyword...).

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