immutable_seq::measure
pub trait Measure<M> { fn measure(&self) -> M; }
fn measure(&self) -> M
impl<T, M> Measure<M> for Node<T, M> where T: Measure<M>, M: Copy
impl<T, M> Measure<M> for Digit<T, M> where T: Measure<M>, M: Add<Output=M> + Copy
impl<T, M> Measure<M> for FingerTree<T, M> where T: Measure<M>, M: Add<Output=M> + Zero + Copy