these

Version 1.2 revision 0 uploaded 2023-03-14T21:32:14.000Z by phadej.

Package meta

Synopsis

An 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:

• semialign For Align and Zip type-classes.

• semialign-indexed For SemialignWithIndex class, providing ialignWith and izipWith.

• these-lens For lens combinators.

• monad-chronicle For transformers variant of These.

Author

C. McCann, Oleg Grenrus

Bug reports

n/a

Category

Data, These

Copyright

n/a

Homepage

https://github.com/haskellari/these

Maintainer

Oleg Grenrus <oleg.grenrus@iki.fi>

Package URL

n/a

Stability

n/a

Components

• lib:these