There is also a technical usage of the word variant.
Eg "A provisioning variant refers to the provisioning datafill for an interface. Reprovisioning enables a service provider to configure multiple variants at a time. The variant in use at a given time is the active variant, while others are referred to as the standby variants." 
To try to translate that into English, a working piece of network equipment has a particular set of configuration data that determines how it behaves. A standby variant is an alternate set of configuration that has been entered into the equipment, but is not currently being used. The configuration being used is the active variant. BenAveling 00:23, 18 June 2007 (UTC)
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"(computing) A random number." Really? I've never come across it. Equinox◑ 21:11, 30 April 2010 (UTC)
I've never heard of it either. User:Hekaheka added the sense, replacing an even less likely mathematical sense. I wonder if it is in some obscure computing dictionary? My Google search didn't show any usage. Dbfirs 22:42, 1 May 2010 (UTC)
Looking at it now, I don't have a clue of what I have been thinking. I must have been tired or something, possibly working with two entries parallelly. Delete. --Hekaheka 07:44, 7 May 2010 (UTC)