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Re: Need IDL 8 Help [message #87326 is a reply to message #87324]

Fri, 24 January 2014 12:09

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Matthew Argall writes:

> theHash[message] is the list of objects receiving/sending messages. Lists have _overloadEQ methods that compare each entity in the list to the desired quantity. If the maximum in the array of 1's and 0's is 0, then you know that the object is not in the list already.
>
> IDL> message = 'CHANGED_COLORS'
> IDL>
> IDL> theHash = hash()
> IDL> obj1 = obj_new('idl_container')
> IDL> obj2 = obj_new('idlanroi')
> IDL> obj3 = obj_new('idlgrview')
> IDL>
> IDL> theHash[message] = list()
> IDL> theHash[message] -> add, obj1
> IDL> theHash[message] -> add, obj2
> IDL> print, theHash[message] eq obj3
> 0 0

Humm. A overloaded operator is kinda like introducing a paragraph into
the documentation that is written in Serbian, isn't it? ;-)

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Need IDL 8 Help By: David Fanning on Thu, 23 January 2014 15:57
		Re: Need IDL 8 Help By: Matthew Argall on Thu, 23 January 2014 18:09
		Re: Need IDL 8 Help By: David Fanning on Fri, 24 January 2014 11:22
		Re: Need IDL 8 Help By: Matthew Argall on Fri, 24 January 2014 11:56
		Re: Need IDL 8 Help By: David Fanning on Fri, 24 January 2014 12:09
		Re: Need IDL 8 Help By: Matthew Argall on Fri, 24 January 2014 12:22
		Re: Need IDL 8 Help By: David Fanning on Fri, 24 January 2014 12:25
		Re: Need IDL 8 Help By: kagoldberg on Sat, 25 January 2014 00:55

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