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Re: Help needed with function pointer examples

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Torben Fgidius Mogensen schrieb:
> The moderator opined:
>> [Any program written in an OO language that allows inheritance or
>> overloading uses function pointers, since that's how they're
>> implemented. -John]
>
> If the inheritance and overloading can be resolved statically, function
> pointers are not needed.  But most OO languages use dynamic method
> resolution by default, so what you say applies to nearly all OO
> implementations.

IMO the key is *virtual* methods, which require dynamic lookup in a
Virtual Method Table or similar structure.

In non-OO languages calling conventions like "call by name" also can
require dynamic lookup of function addresses.

Sorting and searching algorithms also typically are implemented with a
compare function (pointer) argument.

DoDi

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Help needed with function pointer examples Swati <swatirathi@cse.iitb.ac.in> - 2012-01-06 12:13 +0530
  Re: Help needed with function pointer examples Uli Kusterer <ulimakesacompiler@googlemail.com> - 2012-01-15 03:41 +0100
    Re: Help needed with function pointer examples arnold@skeeve.com (Aharon Robbins) - 2012-01-16 19:28 +0000
  Re: Help needed with function pointer examples glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-01-15 11:27 +0000
    Re: Help needed with function pointer examples torbenm@diku.dk (Torben Ægidius Mogensen) - 2012-01-16 17:33 +0100
      Re: Help needed with function pointer examples Hans-Peter Diettrich <DrDiettrich1@aol.com> - 2012-01-17 16:28 +0100
  Re: Help needed with function pointer examples Tony Finch <dot@dotat.at> - 2012-01-19 14:07 +0000

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