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Re: Are user-defined private methods possible? [message #67172]

Fri, 10 July 2009 01:33

Oliver
Messages: 6
Registered: July 2009

Junior Member

cool - I'm always amazed about the creativity of people when it comes
to circumvent all those IDL annoyances.

For my lib I used the much simpler approach of defining a 'magic'
number, something along the lines of

pro myClass::privateMethod, arg1, arg2, magic
if( magic ne 148 ) then message, 'private calls only...'
; ...
end

This is obviously no protection at all against someone who on purpose
wants
to call this method, but then its his/her own fault and I would
consider this
bad style and a programming error.

Speaking about mimicking OO concepts in IDL: what also annoys me is
the absence of static methods and class variables.
For the former I use the convention

pro myClass_staticMethodName

i.e. by mixing "classic" IDL and object orientation. Ugly but it
works.
For the latter I use commons:

common myClassStaticVars initializedFlag, var1, var2, var3

The problem with this approach is that variables cannot be initialized
here.
So I define a method

pro myClass_initializeStaticVars

which I either call at program start or (if there're not too many)
in the constructor and all 'static methods' of the class.
InitializedFlag
is set to '1' during the first call so repeated calls have no effect.

Cheers
Oliver

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[Message index]

		Re: Are user-defined private methods possible? By: Oliver on Fri, 10 July 2009 01:33
		Re: Are user-defined private methods possible? By: Paul Van Delst[1] on Wed, 08 July 2009 12:17
		Re: Are user-defined private methods possible? By: Paul Van Delst[1] on Wed, 08 July 2009 12:16
		Re: Are user-defined private methods possible? By: Foldy Lajos on Wed, 08 July 2009 11:56
		Re: Are user-defined private methods possible? By: David Fanning on Wed, 08 July 2009 10:59

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