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Find a flaw in the logic
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À
12/01/2006 20:41:15
Dragan Nedeljkovich (En ligne)
Now officially retired
Zrenjanin, Serbia
Information générale
Forum:
Visual FoxPro
Catégorie:
Classes - VCX
Versions des environnements
Visual FoxPro:
VFP 9
OS:
Windows XP SP2
Database:
Visual FoxPro
Divers
Thread ID:
01086027
Message ID:
01086413
Vues:
16
>>>You are right. However, I'm of opinion that you are actually breaking a 'standard rule' here. You are at risk of changing the value of a variable in the calling program. The code should be something like:
>>>
>>>
lparameters tlEnabled, toObject
>>>
>>>local loObjectX    && you're already using loObject for another purpose
>>>
>>>if vartype( m.toObject ) <> "O"
>>>	loObjectX = this
>>>else
>>>	loObjectX = m.toObject
>>>endif
>>
>>No risk at all since I'm using lparameters and not passing variable by reference.
>
>Ah, but, as far as I know, objects are always passed by reference, because the object type variables are references to actual objects. So if you pass an object by value, you do get a new variable, which still refers to the same object.


You're absolutely right. That again proves that Peter is wrong <g>, since two people can only be right at the same time in Hershelle Ostropoller's stories. <g>
>
>If it wasn't so, your changes to the object would be lost as soon as your code exits - but you know your code works.
If it's not broken, fix it until it is.


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