Flex set-difference

I would like to know how do I define a 开发者_Go百科set difference (A/B) in flex , thank you

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If you mean the difference of two character classes, flex provides the {-} operator.

This operator's explanation will be found in the Flex manual chapter on Patterns.

Hope this helps

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You can do this type of thing quite easily with ActionLinq (ActionLinq.org)

var A:IEnumerable = Enumerable.from([1,2,3,4]);
var B:IEnumerable = Enumerable.from([2,3,4,5]);

var diff:Array = A.except(B).toArray();