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Re: IDL 8.0 compile_opt changes [message #69467 is a reply to message #69328]

Wed, 06 January 2010 13:52

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On 1/6/10 7:56 AM, Yngvar Larsen wrote:
> *) about other issues for 8.0 (according to
> http://michaelgalloy.com/2009/12/28/agu-idl-users-group-meet ing.html#more-2092):
>
> - operator overloading: nice!!
> - null elements for arrays and structures: nice!! ('[]' and '{}'?)

This is also another feature that would have implications for backwards
compatibility because I normally use N_ELEMENTS to indicate if a
variable is undefined, but n_elements([]) eq 0. So an empty array or
structure would show up as undefined in a lot of my code. Not sure if
that would really be a problem or not. I suppose I should use
SIZE(/TYPE) eq 0 to determine if a variable is undefined? But maybe
SIZE([], /TYPE) would actually be 0 too? Some of the details about how
these things are implemented are actually pretty important.

> - FOREACH loop: very useful. Even better if new data types like maps/
> lists/hashtables are planned.

This would be really nice. I would love to not have to bring in my own
objects to do simple things like lists and dictionaries.

> Wishlist:
> - More general datatypes like map/list/hashtable/tuple etc.
> - I wish a scalar and an array with one element could be treated as
> different datatypes. Mathematically, they are different, so sometimes
> confusing bugs are caused by conflating them like IDL currently does.
> - object based widgets anyone? And when will the new widgets used for
> the Workbench be available for users? Motif looks so last millenium...

Yes, that would be really nice. That was on the roadmap last spring.
Maybe in 8.1?

> - some kind of package system or namespaces to avoid having to call my
> own library functions/procedures/objects something like
> " reallylongstringtominimizeprobabilityfornameclashes_myfuncti on "

Mike
--
www.michaelgalloy.com
Research Mathematician
Tech-X Corporation

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[Message index]

		IDL 8.0 compile_opt changes By: chris_torrence@NOSPAM on Fri, 18 December 2009 13:51
		Re: IDL 8.0 compile_opt changes By: wlandsman on Mon, 28 December 2009 04:36
		Re: IDL 8.0 compile_opt changes By: penteado on Sun, 27 December 2009 19:44
		Re: IDL 8.0 compile_opt changes By: H. Evans on Sat, 26 December 2009 13:21
		Re: IDL 8.0 compile_opt changes By: alt on Fri, 25 December 2009 02:30
		Re: IDL 8.0 compile_opt changes By: penteado on Thu, 24 December 2009 08:49
		Re: IDL 8.0 compile_opt changes By: wlandsman on Thu, 24 December 2009 05:07
		Re: IDL 8.0 compile_opt changes By: David Fanning on Thu, 24 December 2009 03:44
		Re: IDL 8.0 compile_opt changes By: penteado on Wed, 23 December 2009 22:13
		Re: IDL 8.0 compile_opt changes By: David Fanning on Wed, 23 December 2009 20:48
		Re: IDL 8.0 compile_opt changes By: proffmw@gmail.com on Wed, 23 December 2009 20:08
		Re: IDL 8.0 compile_opt changes By: penteado on Wed, 06 January 2010 10:35
		Re: IDL 8.0 compile_opt changes By: JDS on Fri, 08 January 2010 13:42
		Re: IDL 8.0 compile_opt changes By: Matt[2] on Wed, 06 January 2010 08:18
		Re: IDL 8.0 compile_opt changes By: Yngvar Larsen on Wed, 06 January 2010 07:29
		Re: IDL 8.0 compile_opt changes By: David Fanning on Wed, 06 January 2010 07:13
		Re: IDL 8.0 compile_opt changes By: Yngvar Larsen on Wed, 06 January 2010 07:12
		Re: IDL 8.0 compile_opt changes By: Kenneth P. Bowman on Wed, 06 January 2010 06:52
		Re: IDL 8.0 compile_opt changes By: Yngvar Larsen on Wed, 06 January 2010 06:56
		Re: IDL 8.0 compile_opt changes By: Michael Galloy on Wed, 06 January 2010 13:52
		Re: IDL 8.0 compile_opt changes By: Maarten[1] on Wed, 06 January 2010 06:01
		Re: IDL 8.0 compile_opt changes By: Michael Galloy on Wed, 06 January 2010 13:25
		Re: IDL 8.0 compile_opt changes By: penteado on Tue, 05 January 2010 15:54
		Re: IDL 8.0 compile_opt changes By: JDS on Tue, 05 January 2010 14:41
		Re: IDL 8.0 compile_opt changes By: Paul Van Delst[1] on Thu, 07 January 2010 08:35
		Re: IDL 8.0 compile_opt changes By: monkman on Tue, 05 January 2010 13:51
		Re: IDL 8.0 compile_opt changes By: David Fanning on Tue, 05 January 2010 11:17
		Re: IDL 8.0 compile_opt changes By: chris_torrence@NOSPAM on Tue, 05 January 2010 10:58
		Re: IDL 8.0 compile_opt changes By: chris_torrence@NOSPAM on Tue, 05 January 2010 10:57
		Re: IDL 8.0 compile_opt changes By: pgrigis on Tue, 05 January 2010 06:57
		Re: IDL 8.0 compile_opt changes By: R.Bauer on Tue, 05 January 2010 06:09
		Re: IDL 8.0 compile_opt changes By: David Fanning on Mon, 04 January 2010 11:58
		Re: IDL 8.0 compile_opt changes By: chris_torrence@NOSPAM on Mon, 04 January 2010 11:41
		Re: IDL 8.0 compile_opt changes By: R.Bauer on Mon, 04 January 2010 02:30
		Re: IDL 8.0 compile_opt changes By: Jeremy Bailin on Tue, 29 December 2009 21:31
		Ruby range operators? Re: IDL 8.0 compile_opt changes By: Paul Van Delst[1] on Fri, 08 January 2010 13:16
		Re: IDL 8.0 compile_opt changes By: penteado on Fri, 08 January 2010 05:36
		Re: IDL 8.0 compile_opt changes By: Maarten[1] on Fri, 08 January 2010 04:19
		Re: IDL 8.0 compile_opt changes By: H. Evans on Fri, 08 January 2010 01:29
		Re: IDL 8.0 compile_opt changes By: Michael Galloy on Thu, 07 January 2010 09:56
		Re: IDL 8.0 compile_opt changes By: Maarten[1] on Thu, 07 January 2010 07:27
		Re: IDL 8.0 compile_opt changes By: wallabadah on Wed, 06 January 2010 16:30

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