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Re: On Pointers and Culture [message #42989 is a reply to message #42987]

Fri, 04 March 2005 05:13

Antonio Santiago
Messages: 201
Registered: February 2004

Senior Member

> You also can do this to avoid the memory duplication:
>
> a = INDGEN(100)
> p = PTR_NEW(a,/NOCOPY)
>
> It's easier if you want to fill 'a' with some sort of complex data :)
>

Yes, but 'a' will be undefined with the /NO_COPY keyword:

IDL> .reset
IDL> a=INDGEN(100)
IDL> help, a
A INT = Array[100]
IDL> p=PTR_NEW(a, /NO_COPY)
IDL> help, a, p
A UNDEFINED = <Undefined>
P POINTER = <PtrHeapVar3>
IDL> help, /heap
Heap Variables:
# Pointer: 1
# Object : 0

<PtrHeapVar3> INT = Array[100]
IDL>

PD: I think you make me pretty familiar XD

Bye.
Antonio.

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[Message index]

		Re: On Pointers and Culture By: David Fanning on Fri, 04 March 2005 12:28
		Re: On Pointers and Culture By: JD Smith on Fri, 04 March 2005 12:01
		Re: On Pointers and Culture By: David Fanning on Fri, 04 March 2005 08:06
		Re: On Pointers and Culture By: David Fanning on Fri, 04 March 2005 08:04
		Re: On Pointers and Culture By: Benjamin Hornberger on Fri, 04 March 2005 07:47
		Re: On Pointers and Culture By: Benjamin Hornberger on Fri, 04 March 2005 07:46
		Re: On Pointers and Culture By: David Fanning on Fri, 04 March 2005 06:05
		Re: On Pointers and Culture By: Antonio Santiago on Fri, 04 March 2005 05:13
		Re: On Pointers and Culture By: David Lopez Pons on Fri, 04 March 2005 03:25
		Re: On Pointers and Culture By: Antonio Santiago on Fri, 04 March 2005 00:16

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