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Re: Pass-By-Reference question. [message #38575 is a reply to message #38510]

Fri, 12 March 2004 13:57

JD Smith
Messages: 850
Registered: December 1999

Senior Member

On Thu, 11 Mar 2004 19:37:22 -0600, Craig Markwardt wrote:

>
> Mark Hadfield <m.hadfield@niwa.co.nz> writes:
>
>> Christopher Lee wrote:
> ...
>>> help, make_array(dimension=[2],value=0.0,double=1,_EXTRA={double:0 })
>>> <Expression> DOUBLE = Array[2]
>>> IDL> help, make_array(dimension=[2],value=0.0,double=0,_EXTRA={double:1 })
>>> <Expression> DOUBLE = Array[2]
>>
>> Nice work. These occur in 6.0 and 5.6, which are the only versions I have.
>>
>> It's a bug. Who's going to report it?
>
> It's not like I can pretend to know what's going on, as my previous
> post already evidenced. But, I can say that the above MAKE_ARRAY()
> behavior exists in IDL 5.5, 5.4, 5.2, 5.1, 5.0, and 4.0.1!!!

Haven't had time to play with this one, but I thought I'd point out
that _REF_EXTRA is a red-herring here: the same problem occurs with
regular _EXTRA. I suspect it has to do with the fact that built-in
IDL routines must explicitly process inherited keywords and manually
implement overriding, rather than some magical process by which they
are overridden. I elect O.P. to send in a bug report ;). You might
get a mug out it.

JD

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[Message index]

		Pass-By-Reference question. By: timrobishaw on Wed, 10 March 2004 01:19
		Re: Pass-By-Reference question. By: JD Smith on Fri, 12 March 2004 13:57
		Re: Pass-By-Reference question. By: timrobishaw on Thu, 18 March 2004 17:50
		Re: Pass-By-Reference question. By: Mark Hadfield on Wed, 17 March 2004 14:25

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