Re: $-globals

[Majic <majic.one@...>]

I like the idea of $ referencing _ENV, not so sure I like $variable.
:s  I already keep myself up at night thinking about which way I
should access tables.  table.variable or table[variable]  XD

</useless-person-piping-in>

On Thu, Jul 8, 2010 at 12:45 PM, Edgar Toernig <froese@gmx.de> wrote:
> Roberto Ierusalimschy wrote:
>>
>> One option would be to ban assignment to globals at all inside
>> functions. Another option would be to only allow assignments to
>> global variable previously seen in that chunk.
>
> Another idea (though rather perlish):
>
> 1) A $ is allowed as the first char of an identifier.
>
> 2) A single $ is what is proposed as _ENV.
>
> 3) $name is syntactic sugar for $.name
>
> 4) Access to globals without using the $ is allowed until
>   the parser sees the first $-identifier in a chunk.
>   From that point on, access to globals without using
>   the $ raises an "undefined local"-error.
>
> 5) Optional, not sure: Raise an "defined as local"-error
>   on $name if name is a local.
>
> No more confusion about local/global - globals start with
> a $!  .oO(Maybe call them environment vars now *g*).
>
> Ciao, ET.
>