Re: RfD: more powerful "any" types

2009/9/9 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
> "David E. Wheeler" <david(at)kineticode(dot)com> writes:
>> Yes, that sounds about right. Is that not basically what Alvaro was
>> looking for to start with? And is there an "any" array that could work
>> for variadic functions like sprintf(), as well?
>
> Well, no, because arrays are inherently all the same element type.
> You could try to do sprintf as
>
>        sprintf(text, variadic anyarray) returns text
>
> but this constrains all the arguments to be the same type, which is
> not what you want.  The variadic mechanism doesn't have the ability
> to deal with what you're suggesting, and I'm not sure we want to try
> to make it do that.

variadic "any" isn't transformed to array.

we are able to write sprintf(text, variadic "any") returns text, but only in C

regards
Pavel Stehule

>
>                        regards, tom lane
>
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