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Re: buggy dictionary [message #91145 is a reply to message #91144]

Tue, 09 June 2015 04:01

Lajos Foldy
Messages: 176
Registered: December 2011

Senior Member

On Tuesday, June 9, 2015 at 11:32:30 AM UTC+2, Helder wrote:
>
> a = dictionary('b',dictionary('c',findgen(10)))
> print, a.b['c',[1:-1]]
>
> However, as you pointed out, this delivers the wrong answer. Exelis acknowledged this (incident number 294397) and filed a bug report.
>
> So this will give a wrong answer:
> print, a.b['c',[1:-1]]

Here [1:-1] is not a subscript range, it is the colon operator for array creation (introduced in IDL 8.3):

IDL> x=[1:-1]
IDL> help, x & print, x
X INT = Array[3]
1 0 -1

So [1:-1] is actually an array subscript (with the usual array subscript clipping).

> but this will be ok:
> print, a.b.c[1:-1]

Here [1:-1] is a subscript range with a negative subscript value.

So the two [1:-1]'s have different meaning.

regards,
Lajos

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[Message index]

		buggy dictionary By: Helder Marchetto on Mon, 08 June 2015 07:08
		Re: buggy dictionary By: Helder Marchetto on Mon, 08 June 2015 07:15
		Re: buggy dictionary By: Fabzi on Mon, 08 June 2015 07:49
		Re: buggy dictionary By: dg86 on Mon, 08 June 2015 08:12
		Re: buggy dictionary By: Helder Marchetto on Mon, 08 June 2015 08:22
		Re: buggy dictionary By: dg86 on Mon, 08 June 2015 09:28
		Re: buggy dictionary By: Dick Jackson on Mon, 08 June 2015 11:28
		Re: buggy dictionary By: Helder Marchetto on Mon, 08 June 2015 13:30
		Re: buggy dictionary By: Helder Marchetto on Tue, 09 June 2015 02:32
		Re: buggy dictionary By: Lajos Foldy on Tue, 09 June 2015 04:01
		Re: buggy dictionary By: Dick Jackson on Tue, 09 June 2015 09:10
		Re: buggy dictionary By: Dick Jackson on Tue, 09 June 2015 09:15
		Re: buggy dictionary By: chris_torrence@NOSPAM on Tue, 09 June 2015 11:21

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