Polymorphism sucks [Was: Paradigms which way to go?]
in [OOP]
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From: topmind on 10 Jun 2005 16:01 Daniel keeps insulting me instead of present specific evidence that OO or poly is "better", and *I* get called a "troll"?
From: Robert C. Martin on 10 Jun 2005 16:02 On 10 Jun 2005 01:18:52 -0700, "Rob Thorpe" <robert.thorpe(a)antenova.com> wrote: >Phlip wrote: >> Rob Thorpe wrote: >> >> > What you've written above gives a basis for understanding the problem. >> > But you've missed an important part, to have an object-orientated >> > program you need data and subroutines connected together in some entity >> > called an "object" or "class" depending on the terminology. >> >> "I can identify Encapsulation and Inheritance as aspects of the 'leverage' >> term in my definition. They help make fOO integral to a system." > >My point is, it is not necessary to have polymorphism, inheritance or >jump tables to bind code and data into an object. All that is >necessary is that the two things are presented together. Granted. However, without polymorphism, I would not consider that OO. I would consider that to be "Object Based". ----- Robert C. Martin (Uncle Bob) | email: unclebob(a)objectmentor.com Object Mentor Inc. | blog: www.butunclebob.com The Agile Transition Experts | web: www.objectmentor.com 800-338-6716 "The aim of science is not to open the door to infinite wisdom, but to set a limit to infinite error." -- Bertolt Brecht, Life of Galileo
From: Robert C. Martin on 10 Jun 2005 16:03 On Fri, 10 Jun 2005 10:44:42 +0200, "Dmitry A. Kazakov" <mailbox(a)dmitry-kazakov.de> wrote: >On Thu, 09 Jun 2005 16:13:48 -0500, Robert C. Martin wrote: > >> I don't think so. Polymorphism is the ability for an object to >> respond to a message in a manner that is consistent with it's type. > >Isn't it rather strong typing? OO languages are strongly typed, even if they aren't statically typed. >Ooch. Can a goal of software design/structuring/etc be "calling functions >through jump tables"? You belittle OO! (:-)) One cannot belittle something by describing it in detail. ----- Robert C. Martin (Uncle Bob) | email: unclebob(a)objectmentor.com Object Mentor Inc. | blog: www.butunclebob.com The Agile Transition Experts | web: www.objectmentor.com 800-338-6716 "The aim of science is not to open the door to infinite wisdom, but to set a limit to infinite error." -- Bertolt Brecht, Life of Galileo
From: topmind on 10 Jun 2005 16:04 > Agreed, and you'll find plenty of examples of systems like that in my > articles and books. Are there any web-available articles that are not device-drivers or systems software? > You will expose it as a useful technique for managing dependencies. Well, I will agree that for certain things under certain conditions it will improve dependency management. Almost all paradigms and techniques have at least a few areas where they do well. But, those areas are fairly narrow in my opinion. -T-
From: Leif Roar Moldskred on 10 Jun 2005 16:34
"topmind" <topmind(a)technologist.com> writes: > Are there any web-available articles that are not device-drivers or > systems software? Yes, and five seconds with google will locate some for you -- less time than you spent writing the post asking. In case that's too cumbersome for you, here: http://www.ratio.co.uk/white.html http://www.csc.calpoly.edu/~dbutler/tutorials/winter96/crc_b/ http://www.cs.jcu.edu.au/Subjects/cp3120/2000/Content/UML/BSUML.shtml http://users.evitech.fi/~tk/rt_design/uml_sound_rec.pdf -- Leif Roar Moldskred |