Trait diffgeom::tensors::Variance

pub trait Variance {
    type Rank: Unsigned + Add<B1>;
    fn variance() -> Vec<IndexType>;

    fn rank() -> usize { ... }
}

Trait identifying a type as representing a tensor variance. It is implemented for CovariantIndex, ContravariantIndex and tuples (Index, Variance).

Associated Types

type Rank: Unsigned + Add<B1>

Required Methods

fn variance() -> Vec<IndexType>

Provided Methods

fn rank() -> usize

Implementors

• impl Variance for ()
• impl Variance for ContravariantIndex
• impl Variance for CovariantIndex
• impl<T, U> Variance for (T, U) where
    U: Variance,
    Add1<U::Rank>: Unsigned + Add<B1>,
    T: TensorIndex,