I might also add that null objects should be the exception rather than the rule, thus the performance impact should be minimal (I hope).

I haven't benchmarked overloading in a while, but as far as I remember, just using it caused quite a huge performance hit in the rest of the code. IIRC something like 30% slower, with 5.6.0. Things might have changed since then though.

In reply to Re: Re(6): Null objects in boolean context by mirod
in thread Autoboxing: Yes or No? by Ovid

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