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Is Method Overloading a good or bad thing?
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01/07/2004 16:52:06
Anthony Testi
Fabtrol Systems Inc.
Eugene, Oregon, États-Unis
 
 
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Forum:
Visual FoxPro
Catégorie:
Autre
Titre:
Is Method Overloading a good or bad thing?
Divers
Thread ID:
00919869
Message ID:
00919869
Vues:
91
( Warning I may have just thrown a Hand Grenade. Question is did I remove the pin? <s> )

I have limited experience with .Net but one concept that caught my eye was
the allowing of Method Overloading. That is more then one method that has
the same name in a class but differ by the parameters passed. VFP
'Handles' that situation by use of PCOUNT( )s and VarTypes, but I saw the
Method Overloading in .Net as much cleaner.

Why I bring it up is that I was reading a article by an developer that I
respect Bertrand Meyer in which he states things like:

"Overloading, the most masochistic device ever introduced, means that you
can give the same name to several methods as long as they differ by at least
one argument type. This is a rare example of a facility that has no known
advantage, and many documented problems (it's confusing, and conflicts with
object-oriented mechanisms such as polymorphism and redefinition) ....

The support for overloading in the CLS is a design flaw. Even if it had any
conceptual justification, overloading would still be a language concept, and
one that concerns not the deeper semantic properties of a language, but the
external appearance of software texts-a mere facility for the program
writer. It has no place in a general OO model; even less in a scheme like
the CLS, whose very purpose is to enable many languages to collaborate.

Overloading languages should never have been permitted to pollute the common
conceptual setup with a marginal mechanism that complicates everyone's job.
Instead, overloading should have been explicitly removed from the CLS,
putting the onus on the overloading languages to provide a demangling
algorithm to clean up any mangled names."

Do others agree with what he is saying?

See: http://www.sdmagazine.com/documents/s=7207/sdm0207f/
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