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Re: On Pointers and Culture [message #42991 is a reply to message #42989]

Fri, 04 March 2005 03:25

David Lopez Pons
Messages: 8
Registered: July 2003

Junior Member

> a = INDGEN(100)
> p = PTR_NEW(a)
>
> This lines creates an 'a' vector and 'p' pointer variable in the
> conventional memory, also copies the same 'a' vector into HEAP memory
> a makes 'p' points this.
> Maybe, it is better:
>
> p = PTR_NEW( INDGEN(100) )
>
> Now, you only have a 'p' pointer variable in conventional memory and
> an array in the HEAP memory.
>
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 :)

> Bye.
> Antonio
>
> (Sorry about mu poor enligh :)

mee too.

Cheers
DLo.

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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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