ArrayExtension

Array+Extension.swift

extension Array {
	/// filter(operation: NSPredicate)
	/// - Parameter operation: NSPredicate
	/// - Returns: array filtered according to  operation NSPredicate
	public func filter(operation: NSPredicate) -> [Element]? {
		let array = NSArray(array: self)
		return array.filtered(using: operation) as? [Element]
	}
}