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From the Preface to Dr. Conway's book, Object Oriented Perl:
A single method call is about 30 percent slower than a regular call to the same subroutine (depending on your hardware, your operating system, the phase of the moon, etc.) But though they're individually much slower, method calls are more powerful than regular subrotine calls, due to a feature known as polymorphism (see chapters 1 and 7). In a larger system, that redresses the speed imbalance in a little [sic], but in general, it's fair to say that an object-oriented implementation of a system in Perl will almost never be faster than the equivalent non-object-oriented implementation, and will usually be somewhere between 20 to 50 percent slower."

But, he goes on to say, there are many compensating benefits, and he then lists them.

I just got the book today-- it looks terrific!

Published by Manning Publications Co. (http://www.manning.com), but I got mine through bookpool.com (click) for only $28.50 -- 34% off the cover price. I love that outfit.


In reply to Re: object oriented performance by davebaker
in thread object oriented performance by burn8

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    [Corion]: marto: How's things? I hope the kids are fine and you too!
    [Corion]: Oh yay. I wonder why a very simple change in a program doesn't elicit a diff, and now I see that my diff program seems to have a bug ;)
    [1nickt]: marto thanks for asking, so far so good. A pretty modern stack and decent procedures, although rather too much home-built stuff (e.g. a logging role that should tries to duplicate Log::Any).
    [Corion]: No. It's just that I'm comparing the same output file twice, instead of comparing the output files of the two runs %-)
    [Corion]: Lo and behold, running a program with the correct input files yields the correct (and expected) output. Yay me.
    [1nickt]: Got a MacBook and am expected to develop directly on it, ironic given the recent thread about that.
    [marto]: Corion, some not too serious issues with the kids, hopefully, other than that just dealing with commuting by car again in the winter, not much fun so far, and there's no real 'bad' weather yet :)
    [marto]: 1nickt, glad to hear it, I'm sure you'll bring improvements to their stack in due course ;)

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