Function transducers::compose_trans

pub fn compose_trans<'t, R, T, U, V, F, G>(
    f: F, 
    g: G
) -> ComposedTransducer<R, T, U, V, F, G> where
    F: Transducer<'t, R, U, V>,
    G: Transducer<'t, R, T, U>, 

Creates a transducer that is the composition f after g.