On 5 June 2017 at 17:58, Dr.Koster
Currently GHC already defined DList for internal use in serveral places. This data type is a nature choice when you need CPS your append, which is a common need. I think base should provide it.
It depends if GHC defines DList for use with base or not; if it's something that's required to use base that _may_ be a semi-valid use case. In general though, as annoying as it is to have to add yet another dependency, build, reload ghci, etc. I prefer to have base to be smaller and packages split up and the dlist package serves admirably. If nothing else, it can iterate faster if a new function needs to be added. Call this a weak +0.1(only because of GHC defining it). -- Ivan Lazar Miljenovic Ivan.Miljenovic@gmail.com http://IvanMiljenovic.wordpress.com