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Does UDF exist?
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Titre:
Versions des environnements
Visual FoxPro:
VFP 9 SP1
Divers
Thread ID:
01516054
Message ID:
01516064
Vues:
52
>>>>Hi,
>>>>
>>>>Is there a method/approach to determine if a user-defined function exists? For example, say the application may or may not have a function MyFunct(). I thought that TYPE() would work but it does not seem to.
>>>>Here is how I used TYPE() in this case:
>>>>
>>>>? TYPE('MyFunct()')
>>>>
>>>>
>>>>But it seem to always return "U". Is there another method?
>>>
>>>
lbYesFunc = .t.
>>>TRY
>>>   lnResult = MyFunct()
>>>CATCH
>>>   lbYesFunc = .f. 
>>>ENDTRY 
>>>
>>>IF NOT lbYesFunc
>>>   MESSAGEBOX([Function don't exists])
>>>ENDIF
>>
>>Thank you. I was hoping that I would not have to run/execute the function to find out if it exists. But if this is the only way, so be it.
>
>Hi Dmitry,
>I don't know another way.

Thank you, Vladimir. Your approach will work.
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham
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