[sc34wg3] TMQL: Grammar -- "predicate-invocation"

[Robert Barta]

On Tue, Jul 01, 2008 at 02:40:51PM +0200, Lars Heuer wrote:
> Hi Robert,
> 
> [...]
> > <> means "at least one, separated by ,"
> 
> Aha, but <> is nowhere explained. It would be nice if the info that <>
> implies a comma is made explicit somewhere.

http://kill.devc.at/system/files/tmql.html#id2253273

3.1.2

> I do not understand, why
> 
>      [ ',' ] [ '...']
> 
> occurs in that production.

> Is
> 
>   member-of(member: $m, )
> 
> the same as
> 
>   member-of(member: $m ...)
> 
> and the same as
> 
>   member-of(member: $m, ...)

No, not the same.

  member-of(member: $m, )

is semantically the same as

  member-of(member: $m)

And

  member-of(member: $m, ...)

the same as

  member-of(member: $m ...)

--

I personally would also be happy with having only

  member-of(member: $m, ...)

i.e. to change the syntax to

    anchor   '('    < anchor   ':'   value-expression >   [  ','    '...'  ]    ')' 

\rho