Swift SequenceType exclude

SequenceType+Exclude.swift

extension SequenceType where Generator.Element : Equatable {
    /// Returns `self`, excluding `element`
    @warn_unused_result
    public func excluding(element: Self.Generator.Element) -> [Self.Generator.Element] {
        return self.filter({$0 != element})
    }
    
    public func excluding(element: [Self.Generator.Element]) -> [Self.Generator.Element] {
        return self.filter({!(element.contains($0))})
    }
}