The church-list package

[Tags:deprecated, library, mit]

Replicates the Data.List interface for lists built around the type forall r. Monoid r => (a -> r) -> r. This allows for O(1) concatenation and snoc, just as difference lists do, but without requiring that every operation (such as map) render the list.

As motivation: Although difference lists are great for use with Writer, they are horrible for use with State, because getting the list and querying an element will result in producing a structure which is thrown away. With mlists, you can both append to, and inspect, the list in progress without any wasted work.


Versions 0.0.1, 0.0.2
Dependencies base (>=3 && <5) [details]
License MIT
Author John Wiegley
Category System
Source repository head: git clone git://
Uploaded Sat May 3 07:28:53 UTC 2014 by JohnWiegley
Distributions NixOS:0.0.2
Downloads 548 total (15 in the last 30 days)
0 []
Status Docs available [build log]
Successful builds reported [all 1 reports]
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