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Re: Strange arrary indexing quirk? [message #77181 is a reply to message #77180]

Thu, 11 August 2011 20:42

penteado
Messages: 866
Registered: February 2018

Senior Member
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On Aug 11, 10:12 pm, Beaker <mattjamesfran...@gmail.com> wrote:
> Does anyone have any insight into why this happens? I'd expect the
> second line to also throw an error. A lot of the inner workings of IDL
> seem pretty arcane and hard to guess at before you try things...
>
> I was being lazy/naughty and using a catch statement to detect when an
> index went out of range, which I knew would happen very occaisonally
> and was trying to avoid the performance hit of checking for it every
> time. This round off instead of an error behaviour made sure that plan
> didn't work!

If you do not like that behaviour, use

compile_opt strictarraysubs

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[Message index]

		Re: Strange arrary indexing quirk? By: Matt Francis on Thu, 11 August 2011 22:05
		Re: Strange arrary indexing quirk? By: David Fanning on Thu, 11 August 2011 20:58
		Re: Strange arrary indexing quirk? By: penteado on Thu, 11 August 2011 20:45
		Re: Strange arrary indexing quirk? By: penteado on Thu, 11 August 2011 20:42

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