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Re: Nested data structures [message #89918 is a reply to message #89916]

Wed, 24 December 2014 16:11

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On 12/24/14, 2:29 PM, wlandsman wrote:
> I am trying to build a data structure that will allow me to specify a person by his State, city, street and street. (This is not my actual need, but it is analogous.) Thus I might specify (as metacode)
>
> ['Colorado']['Boulder']['Pearl'][9990] = 'John'
>
> I assume this can be done with nested hashes or dictionaries, but I am having difficulty figuring out how to start. I started writing something like
>
> person = [hash('colorado',['boulder','Denver'], hash('Arizona',[Tuscon','Phoenix'])
>
> but I get lost in making the nesting clear. thanks for any help. --Wayne
>
>

Is something like this what you are trying to do?

IDL> person = hash('Colorado', hash('Boulder', 1, 'Denver', 2),
'Arizona', hash('Tucson', 3, 'Phoenix', 4))
IDL> (person['Colorado'])['Denver']
2

Mike
--
Michael Galloy
www.michaelgalloy.com
Modern IDL: A Guide to IDL Programming (http://modernidl.idldev.com)
Research Mathematician
Tech-X Corporation

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[Message index]

		Nested data structures By: wlandsman on Wed, 24 December 2014 13:29
		Re: Nested data structures By: Michael Galloy on Wed, 24 December 2014 16:11
		Re: Nested data structures By: chris_torrence@NOSPAM on Wed, 24 December 2014 20:49
		Re: Nested data structures By: wlandsman on Fri, 26 December 2014 12:02

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