[taking this off the platform mailing list] Hi, Am Mittwoch, den 13.11.2013, 19:10 +0100 schrieb Bas van Dijk:
I would call using [a] -> [a] and (.): "rolling your own" and I consider it bad practise. Code would be easier to understand if it used common names.
I’m not sure; there is a concept behind it that applied to other data types as well, e.g. trees, possibly defined by the user. Having people knowledgeable about [a] -> [a] will enable them to apply the same pattern to their own data types. If [a] -> [a] were bad practice, then base should stop using it¹, and Data.DList should become part of base. (This is not a strawman argument: If people support this then sure, why not). One main advantage of dlist if of course that it comes with instances (Monad, Functor, etc.) Greetings, Joachim ¹ http://hackage.haskell.org/package/base-4.6.0.1/docs/Prelude.html#t:ShowS -- Joachim “nomeata” Breitner mail@joachim-breitner.de • http://www.joachim-breitner.de/ Jabber: nomeata@joachim-breitner.de • GPG-Key: 0x4743206C Debian Developer: nomeata@debian.org