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Re: Undefined variables in structures [message #62424 is a reply to message #62421]

Wed, 10 September 2008 21:45

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

Joost Aan de Brugh wrote:
> 5 ; The way I now just thought of.
> Make it a pointer and during startup
> if *const.COLOR_FILENAME eq "" then void =
> Temporary(*consts.COLOR_FILENAME)
> and then simply
> plot,...,color=fsc_color(color,filename=*consts.COLOR_FILENA ME)
> ; This does work. I can dereference the pointer, because it is a valid
> pointer to an undefined heap variable. It is still a little bit

Yes, this is the way I would do it. It may also be useful in this type
of situation to initialize const.color_filename using the ALLOCATE_HEAP
keyword:

const.color_filename = ptr_new(/allocate_heap)

This will make *const.color_filename an undefined variable.

Mike
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www.michaelgalloy.com
Tech-X Corporation
Software Developer II

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[Message index]

		Re: Undefined variables in structures By: Joost Aan de Brugh on Thu, 11 September 2008 01:03
		Re: Undefined variables in structures By: Michael Galloy on Wed, 10 September 2008 21:45

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