infix operator |>: AdditionPrecedence
public func |> <T,U>(lhs: T, rhs: (T) -> U) -> U {
    return rhs(lhs)
}

public func |> <T>(lhs: T, rhs: inout T) {
    rhs = lhs
}

infix operator <|: AdditionPrecedence

public func <| <T>(lhs: T, rhs:(T) -> Void) -> T {
    rhs(lhs)
    return lhs
}

UILabel()
    <| {"pipe" |> $0.text}
    <| {$0.sizeToFit()}
    |> self.view.addSubview