On Thu, Aug 17, 2006 at 09:12:07PM +0200, Leopold Toetsch wrote:
> A releated change:
>
> $S0 = hsh['no_such_key']
>
> used to return an empty STRING*, it'll soon return a NULL STRING*.
Just a note (to copy from irc #parrot) -- this will cause a number
of things in PGE and perl6 to break, as I rely on the "return empty string"
behavior. In particular, changing it to return NULL will mean
in many places that I will have to replace single-line key lookups
$S0 = hsh['key']
with
$S0 = hsh['key']
unless null $S0 goto label
$S0 = ''
label:
I don't mind if
$P0 = hsh['no_such_key'] (get_pmc_keyed)
returns NULL, but it would be nice if
$S0 = hsh['no_such_key'] (get_string_keyed)
could continue to return a string (''), the same way that
$I0 = hsh['no_such_key'] (get_int_keyed)
$N0 = hsh['no_such_key'] (get_number_keyed)
still return ints (0) and nums (0.0).
In the meantime, I'm checking the PGE code to see how many
lookups will actually be affected. If it's a small number,
I'll withdraw my objection.
Pm
