gistfile1.txt

/// Fetch item by class
public func SelectTypedItemFromArray<T, U: SequenceType>(type t: T.Type, array: U) -> T? {
    for eachItem in array {
        if let typedItem = eachItem as? T {
            return typedItem
        }
    }
    return nil
}

// Filter array by class
public func FilterTypeFromArray<T, U>(type t: T.Type, array: Array<U>) -> [T] {
    return array.flatMap{
        if let item = $0 as? T {
            return [item]
        } else { return [] }
    }
}