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Why does '[1,2,3] EQ [2]' yield zero but '[1,2,3] EQ 2' yield [0,1,0] ? [message #54365]

Fri, 01 June 2007 19:18

cgguido
Messages: 195
Registered: August 2005

Senior Member

Hi all,

The post title says it all. I thought "everything" in IDL was an
array, but using [2] and 2 with relational operators is not
equivalent...

I searched the doc and newsgroup for quite a while, but obviously I
did not come up with search terms that are specific enough.

It took me a while to track this down in some code I was writing. My
bug is now fixed *but* I don't understand why exactly. And we all know
voodoo and IDL don't mix :-) can somebody clarify please?

Many thanks,
Gianguido

PS: I have a feeling this issue came up not too long ago, just
couldn't find it. Sorry :-( Feel free to dispense with this question
with a link.

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