On Aug-07, Simon Glover wrote:
> In other words, if we're referencing an element outside the current
> array bounds, then we call undef(), which creates a new PerlUndef PMC,
> and we then use this _solely_ to call get_integer on, despite the fact
> that we _know_ that the result is going to be zero. This seems
> remarkably inefficient. Is there any good reason not to simply rewrite
> the above as:
>
> INTVAL get_integer_keyed_int (INTVAL key) {
> if (key >= DYNSELF.elements() || key < -DYNSELF.elements()) {
> return 0;
> }
> else
> return SUPER(key);
> }
"Warning: use of uninitialized value". Or whatever else accessing an
undef triggers. I wasn't sure exactly what that would do, so I played
it safe and went the slow but sure route to duplicating the effect.
That was a long time ago. If we now know exactly what converting an
undef into an int should do, then we can do the same thing. Or
directly call undef.get_integer, or whatever.
