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Copying a hash [message #81003]

Mon, 06 August 2012 13:54

Matt[3]
Messages: 23
Registered: April 2011

Junior Member

Hi All,

Does anyone know if there's a simple way that I can make a copy of a hash, which I can then edit independently of the original? For example, it seems that, like a pointer, changes that I make to the copy are also applied to the original:

IDL> original=hash('A', [1, 2])
IDL> copy=original
IDL> copy['A', 1]=10
IDL> print, copy
A: 1 10
IDL> print, original
A: 1 10

I can copy to a new hash key-by-key:

copy=hash()
foreach variable, original, key do copy[key]=original[key]

Which works fine, unless one of the elements in the hash is itself a hash, then I end up with the same problem one level down.

Is there something simple I'm missing here?

Cheers,

Matt

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[Message index]

		Copying a hash By: Matt[3] on Mon, 06 August 2012 13:54
		Re: Copying a hash By: Matt Francis on Thu, 09 August 2012 17:44
		Re: Copying a hash By: Bob[4] on Fri, 17 August 2012 15:25
		Re: Copying a hash By: Matt[3] on Thu, 09 August 2012 11:25
		Re: Copying a hash By: Matt[3] on Tue, 07 August 2012 08:44
		Re: Copying a hash By: David Fanning on Mon, 06 August 2012 16:41

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