On 27/04/2012 12:39, Tom Ward wrote:
From what I can see it's used to create a new set of unique items (correct me if I'm wrong!)
To further clarify this it should be said that a 'set' is a collection where every item can only occur once. Having the union of two sets into another means that it takes every item in the first set and in the second and puts them into the result. The thing that prevents duplicate items in the union is the fact that a set cannot contain duplicate items.
More information about sets and their mathematical functions (including diagrams!):
http://en.wikipedia.org/wiki/Set_(mathematics) A set where items can have duplicates is called a multiset or a bag: http://docs.python.org/library/collections.html#collections.Counter http://en.wikipedia.org/wiki/Multiset -- Wouter Klouwen, Software Engineer The Foundry, 6th Floor, Comms Building, 48 Leicester Sq, London WC2H LT Tel: +442079686828 • Fax: +4420 79308906 • thefoundry.co.uk The Foundry Visionmongers Ltd • Reg.d in England and Wales No: 4642027 _______________________________________________ Nuke-python mailing list [email protected], http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python
