non fatal casting?

hi
is there any way to make non-fatal casts (text -=> date and so on?)
it would be just perfect if i could do something like:
try:
my_date := my_text::date;
except:
return -1;
end:
return 0;

i'd like to use it in plpgsql functions. anyway to do it?

depesz

--
hubert depesz lubaczewski http://www.depesz.pl/
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