Changelog

0.2 - 2025-06-20

Added

• sscanf and sprintf.
• unitL, the unique lead for the unit type.
• NullL type synonym for leads and other synonyms for higher arity.
• Support for lifting isos and prisms from lens to leads.
• Examples to documentation.
• Flakification.
• Direnv support.

Changed

• Types accumulate in the correct order when composing cassettes.
• K7 has two type parameters, down from four. The parser and printer types are kept in sync.
• K7 generalized to arbitrary profunctors.
• Make K7 an instance of Data.Monoid. mempty signifies failure and (<>) is for alternation, instead of (<|>).
• Swapped the order of the fields in K7.
• many1 is now called some to be consistent with Control.Applicative.
• Change parameter order in UnL, BinL to match the order in lens.
• Switched to Apache-2.0 license.

Fixed

• choice works when applied to the empty list.
• nilL, nothingL now correctly fail when the input is not the expected constructor.
• Argument to failure continuation in consL.

Removed

• Chaining combinators catanal, catanar and chainl, chainr.

0.1 - 2012-03-19

Initial release.