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Re: IDL 8.0 compile_opt changes [message #69326 is a reply to message #69187]

Wed, 06 January 2010 07:12

Yngvar Larsen
Messages: 134
Registered: January 2010

Senior Member

On Jan 6, 3:56 pm, Yngvar Larsen <larsen.yng...@gmail.com> wrote:
> My 2 cents:
>
> *) About negative indexing:
>
>> For example:
>
>> a[0:-1] In IDL80, returns all the elements
>> a[-1] In IDL80, returns the last element
>
> Is the only use for negative indexing a way to indicate the last
> element? Then this is probably the most idiotic choice possible:
> semantic overload of the integer -1 with no gain whatsoever (except
> possibly in ITTVis' parsing code that might be simplified by some
> clever tricks?).

Hm. Quick followup to myself: I forgot about how Python uses negative
integers ( seq[-n] == seq[length(seq)-n] ), which is probably the
intended syntax here? Then at least it makes kind of sense.

--
Yngvar

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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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