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Re: array of objects? [message #29276]

Tue, 12 February 2002 09:22

Pavel A. Romashkin
Messages: 531
Registered: November 2000

Senior Member

Ted is correct. For creating an array of objects, you need to use OBJARR
function, then loop through the array and populate each element using
OBJ_NEW. What you have created in your code is 100 references to the
same object.
We talked before about the advantages of allowing definitions of object
arrays the same way as normal arrays are made, but the consensus was
that it is unsafe :( becasuse, say, one could populate an object array
with different object classes. Personally, I think it is not so and I'd
leave that decision to the programmer, but heap variable arrays are
slower a bit anyway, so none of the fast vector features of IDL would've
worked on them anyway.
HTH,
Pavel

Thomas Bielser wrote:
>
> ...but IDL comes up with:
>
> IDL> print, a[0] -> getproperty( /integer_value )
> 99
> IDL> print, a[50] -> getproperty( /integer_value )
> 99
> IDL> print, a[99] -> getproperty( /integer_value )
> 99
>
> Is this a feature or a bug? Many thanks in advance!
> Thomas

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[Message index]

		Re: array of objects? By: Pavel A. Romashkin on Tue, 12 February 2002 09:22
		Re: array of objects? By: Ted Cary on Tue, 12 February 2002 06:37
		Re: array of objects? By: thomas.bielser on Tue, 12 February 2002 23:19

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