Re: variadic function support
От | Pavel Stehule |
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Тема | Re: variadic function support |
Дата | |
Msg-id | 162867790807140026v67eaa804kdb15ac848820d49d@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: variadic function support (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: variadic function support
|
Список | pgsql-patches |
> > As far as the "variadic int" versus "variadic int[]" business, I'm > starting to agree with Pavel that "variadic int[]" offers less potential > for confusion. In particular, it seems to make it more obvious for the > function author that the argument he receives is an array. Also, the > other one would mean that what we put into pg_proc.proargtypes doesn't > agree directly with what the user thinks the argument types are. While > I think we could force that to work, it's not exactly satisfying the > principle of least surprise. > > > One issue that just occurred to me: what if a variadic function wants to > turn around and call another variadic function, passing the same array > argument on to the second one? This is closely akin to the problem > faced by C "..." functions, and the solutions are pretty ugly (sprintf > vs vsprintf for instance). Can we do any better? At least in the > polymorphic case, I'm not sure we can :-(. > > regards, tom lane > maybe with some flag like PARAMS? SELECT least(PARAMS ARRAY[1,2,3,4,5,6]) Regards Pavel Stehule
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