Revision fdf7095e856c3c13a54baee5d942d14e96f7fb4d

Package: ghc-these @ 1.0.1

Synopsis

Either-or-both data type

Description

This package provides a data type These a b which can hold a value of either type or values of each type. This is usually thought of as an "inclusive or" type (contrasting Either a b as "exclusive or") or as an "outer join" type (contrasting (a, b) as "inner join").

data These a b = This a | That b | These a b

Since version 1, this package was split into parts:

• https://hackage.haskell.org/package/semialign For Align and Zip type-classes.

• https://hackage.haskell.org/package/semialign-indexed For SemialignWithIndex class, providing ialignWith and izipWith

• https://hackage.haskell.org/package/these-lens For lens combinators.

• http://hackage.haskell.org/package/monad-chronicle For transformers variant of These.

Home page

https://github.com/isomorphism/these

Location

gnu/packages/haskell-xyz.scm (line: 13524, column: 2)

License

• Modified BSD

Derivations

Lint warnings