pub fn vertex_get_mut(
        &mut self,
        vertex_id: VD::VertexIndex,
    ) -> Result<&mut VD::Vertex<I, F>, BvError> {
        self.vertices_.get_mut(vertex_id.0).ok_or_else(|| {
            BvError::IdError(format!("The vertex id {} does not exists", vertex_id.0))
        })
    }
/// Returns a mutable reference to a vertex
Returns a mutable reference to a vertex
Returns a mutable reference to a vertex
pub fn vertex_get_mut(
        &mut self,
        vertex_id: VD::VertexIndex,
    ) -> Result<&mut VD::Vertex<I, F>, BvError> {
        self.vertices_.get_mut(vertex_id.0).ok_or_else(|| {
            BvError::IdError(format!("The vertex id {} does not exists", vertex_id.0))
        })
    }
pub fn vertex_get_mut ( & mut self , vertex_id : VD :: VertexIndex , ) -> Result < & mut VD :: Vertex < I , F > , BvError > { self . vertices_ . get_mut ( vertex_id . 0 ) . ok_or_else ( | | { BvError :: IdError ( format ! ( " " vertex_id 0 ) ) } ) }
Returns a mutable reference to a vertex
Returns a mutable reference to a vertex
&mut self
vertex_id
VD::VertexIndex