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Re: _ref_extra [message #26335 is a reply to message #26237]

Wed, 22 August 2001 23:58

Martin Schultz
Messages: 515
Registered: August 1997

Senior Member

JD Smith <jdsmith@astro.cornell.edu> writes:

>>
>> JD Smith wrote:
>>>
> ... and I for one have pined for a native method
> within IDL to allow this. This does not mean, however, that allowing
> such carte blanche access is always good idea. Typically, a *small*
> subset of a class' data fields are useful and stable for public
> consumption.
>
> JD

Wouldn't it be lovely, had the folks at RSI thought about a "public" and "private"
attribute for object fields? This is another occasion where the quick-and-dirty IDL
clashes with the programming language IDL.

BTW: Here's the 7 liner that I use in my Base object (and hence all objects) to do
what Pavel advertises. I haven't tried if Struct_Assign also works the other way
round ...

Cheers,

Martin

; ------------------------------------------------------------ -------------------------
; GetState:
; This method returns the object "data" as a structure. Pointers and
; object references are not copied, i.e. they are returned as
; unitialized variables (NullPointer)!

FUNCTION MGS_BaseObject::GetState

ok = Execute('retval = {'+Obj_Class(self)+'}') ;; Same trick as in Copy
IF ok THEN BEGIN
Struct_Assign, self, retval
ENDIF ELSE BEGIN
retval = { nothing: 0L }
ENDELSE

RETURN, retval

END

--
[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[ [[[[[[[
[[ Dr. Martin Schultz Max-Planck-Institut fuer Meteorologie [[
[[ Bundesstr. 55, 20146 Hamburg [[
[[ phone: +49 40 41173-308 [[
[[ fax: +49 40 41173-298 [[
[[ martin.schultz@dkrz.de [[
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[Message index]

		_ref_extra By: Pavel A. Romashkin on Wed, 10 January 2001 14:54
		Re: _ref_extra By: Pavel A. Romashkin on Mon, 13 August 2001 10:37
		Re: _ref_extra By: John-David T. Smith on Mon, 13 August 2001 09:47
		Re: _ref_extra By: Martin Schultz on Wed, 22 August 2001 23:58
		Re: _ref_extra By: Pavel A. Romashkin on Mon, 13 August 2001 09:19
		Re: _ref_extra By: John-David T. Smith on Fri, 10 August 2001 13:07
		Re: _ref_extra By: Pavel A. Romashkin on Fri, 10 August 2001 12:44
		Re: _ref_extra By: david[2] on Fri, 10 August 2001 12:39
		Re: _ref_extra By: Pavel A. Romashkin on Fri, 10 August 2001 11:31

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