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Re: IsA questions [message #90613 is a reply to message #90552]

Tue, 17 March 2015 09:59

chris_torrence@NOSPAM is currently offline

chris_torrence@NOSPAM
Messages: 528
Registered: March 2007

Senior Member

On Monday, March 9, 2015 at 6:42:43 PM UTC-6, Matthew Argall wrote:
> I answered part of my own question... /STRING is to identify IDL_String classes. I guess the /INTEGER and /NUMBER keywords, then, would refer to the IDL_Integer and IDL_Number classes. And /FLOAT?
>
> e.g. http://exelisvis.com/docs/IDL_String.html

Hi Matthew,

I admit that there are some inconsistencies in the ISA results. For objects and pointers the idea was that ISA would return 0 for null object or pointers. However, I forgot about the /SCALAR keyword. I've fixed this for IDL 8.5, so ISA (with no keywords) will still return 0 for null heap variables, but will return 1 with /SCALAR.

The Typename argument refers to the actual IDL type (FLOAT or DOUBLE), as opposed to the FLOAT keyword, which can accept either float or double. Similarly for the COMPLEX keyword. DECIMAL might have been another choice, but would have been confusing for complex types...

I have also beefed up the Typename argument so it now accepts the "IDL_Variable" classes such as IDL_Integer, IDL_Number, and IDL_Variable.

Cheers,
Chris

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[Message index]

		IsA questions By: Matthew Argall on Mon, 09 March 2015 17:03
		Re: IsA questions By: Matthew Argall on Mon, 09 March 2015 17:42
		Re: IsA questions By: chris_torrence@NOSPAM on Tue, 17 March 2015 09:59
		Re: IsA questions By: Matthew Argall on Tue, 17 March 2015 12:16
		Re: IsA questions By: chris_torrence@NOSPAM on Tue, 17 March 2015 15:22

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