Trait KeyCat 

pub trait KeyCat<Rhs> {
    type Out;
}

Type-level concatenation of index key types, mirroring the runtime tuple flattening in Set::product. The arity ceiling is 4, matching the FromIndexKey/From<(...)> tuple implementations.

Required Associated Types

type Out

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<A, B, C, D: ScalarKey> KeyCat<D> for (A, B, C)

type Out = (A, B, C, D)

impl<A, B, C, D> KeyCat<(C, D)> for (A, B)

type Out = (A, B, C, D)

impl<A, B, C: ScalarKey> KeyCat<C> for (A, B)

type Out = (A, B, C)

Implementors

impl<A: ScalarKey, B, C, D> KeyCat<(B, C, D)> for A

type Out = (A, B, C, D)

impl<A: ScalarKey, B, C> KeyCat<(B, C)> for A

type Out = (A, B, C)

impl<A: ScalarKey, B: ScalarKey> KeyCat<B> for A

type Out = (A, B)