[SR-Dev] new operators & if($v) behaviour
miklos at iptel.org
Tue Apr 28 09:53:26 CEST 2009
On 04/27/2009 04:18 PM, Juha Heinanen wrote:
> Andrei Pelinescu-Onciul writes:
> > We could try some sane defaults (for if ($v)).
> yes, in case there are some.
> > For example that's what perl does:
> > undefined "" string 0 other integer
> > $foo eq undef true true false false false
> > $foo == undef true true true true false
> > $foo eq "" true true false false false
> if $foo is undefined, it is insane to me that it would be equal to empty
> string "" or 0. also comparing two undefined things should not result
> in true.
yes, this is really strange indeed. And ("abcd" == undef) is also true
according to the table.
> what would make sense to me is that comparing an undefined thing to
> anything that is defined, would result in false.
> > $foo == 0 true true true true false
> again "" == 0 makes no sense.
> -- juha
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