On Wed, 2005-05-11 at 09:50, Luke Palmer wrote:
> Oh, just to avoid further confusion: In the baz() called under fatal,
> it will only turn undefs that were generated by "fail" calls into
> exceptions. Other sorts of undefs will be returned as ordinary
> undefs.
Ok, so let me try to get my head around this:
fail is something like:
return undef but Exception(...some state info...);
the only question is whether the caller reacts to that special return
value like so:
if $return ~~ Exception {
return $return;
}
or simply ignores it. If you ignore the special return value, then you
presumably have the burden of coping with it in some other way, like so:
no fatal;
$socket.bind(:interface<localhost>, :port<80>) or
$socket.bind([EMAIL PROTECTED]) or
die "Cannot bind: $!";
At the top-level (runtime), you would expect to have something like
(arm-waving some naming specifics):
given $program.(@args) {
when Exception { $*ERR.print $_.err; exit 1 }
default { exit +$_ }
}
Am I getting it now?
--
Aaron Sherman <[EMAIL PROTECTED]>
Senior Systems Engineer and Toolsmith
"It's the sound of a satellite saying, 'get me down!'" -Shriekback
