trait TypeClass[C[_]] extends ProductTypeClass[C]
A type class additionally abstracting over the coproduct
operation of type
classes over types of kind *
.
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- abstract def coproduct[L, R <: Coproduct](cl: => C[L], cr: => C[R]): C[:+:[L, R]]
Given two type class instances for
L
andR
, produce a type class instance for the coproductL :+: R
. - abstract def emptyCoproduct: C[CNil]
The empty coproduct
- abstract def emptyProduct: C[HNil]
The empty product.
The empty product.
- Definition Classes
- ProductTypeClass
- abstract def product[H, T <: HList](ch: C[H], ct: C[T]): C[::[H, T]]
Given a type class instance for
H
, and a type class instance for a product, produce a type class instance for the product prepended withH
.Given a type class instance for
H
, and a type class instance for a product, produce a type class instance for the product prepended withH
.- Definition Classes
- ProductTypeClass
- abstract def project[F, G](instance: => C[G], to: (F) => G, from: (G) => F): C[F]
Given an isomorphism between
F
andG
, and a type class instance forG
, produce a type class instance forF
.Given an isomorphism between
F
andG
, and a type class instance forG
, produce a type class instance forF
.- Definition Classes
- ProductTypeClass
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