Re: [HACKERS] string_to_array with empty input

"David E. Wheeler" <david@kineticode.com> writes:
> Well, I'd just point out that the return value of string_to_array() is
> text[].

True...

> Thus, this is not a problem with string_to_array(), but a
> casting problem from text[] to int[].

Nonsense.  The question is whether string_to_array is meant to be useful
for lists of anything except text.  I agree you could argue that it
isn't.  But even in the domain of text it's not all that cut-and-dried
whether string_to_array should return array[] or array[''] for empty
input.  So ISTM we're giving up less than we gain by choosing the former.

            regards, tom lane