The Semialign typeclass (from
semialign) lets us
line up two structures of the same type. By combining this with the
Filterable and Witherable typeclasses from the
witherable
package, we can derive a number of useful diff/patch/merge-style
operations.
semialign-extras aims to be a collection of interesting
abstractions/operations that:
-
Build on top of (at least) the
Semialigntypeclass, or related classes from thesemialignuniverse; and -
Do not belong inside other packages in the
semialignuniverse.
PRs that serve these goals are most welcome.
semialign has a very lean dependency footprint, and its authors
intend to keep it that way. If your PR can work within the small
dependency footprint of semialign, it probably should be offered up
there first.
semialign-extras already depends on lens, so the marginal cost of
additional dependencies is likely to be small.