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Clarion in general: New and Dispose
2005-01-06 -- Jim Kane

Newsgroups: softvelocity.clarion.language

> Several months ago, maybe in 2003, there was an interesting discussion
> about how to deal with situations where you need to NEW a variable in
> a method but you can't dispose of it easily, such as:
>
> MyMethod   Procedure(String pS)
> NewS  &String
>  Code
>  NewS &= NEW STRING(Size(pS)*2)
>  NewS = pS & pS
>  Return(NewS)
>
> You can't dispose of this and this would cause memory leak (as far as
> I know)  Some people posted a really nifty way to call the method back
> to dispose of the variable but I have lost this and don't remember
> exactly how it was done.  Anyone recall this?


> Why not DISPOSE the string in your calling code when you are through with
> it?
>
> StrPtr &= MyMethod( ArnorsStr )
> 
> IF ~StrPtr &= NULL
>  DISPOSE( StrPtr )
> END

that would be my vote although I dont bother to test for null:

StrPtr &= MyMethod( ArnorsStr )
 
  DISPOSE( StrPtr )

it has the advantage of immediately disposing of a potentially large string
before calling 'mymethod' a second time.
Jim Kane

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