Add meaningful instances to ZipList
roma at ro-che.info
Mon Dec 19 23:14:26 CET 2011
* wren ng thornton <wren at freegeek.org> [2011-12-19 16:45:50-0500]
> While we're on the topic, is there any reason why ZipList is a data
> type instead of a newtype? Is the extra bottom actually necessary for
> the Applicative semantics? If not, then I'd suggest changing it to a
> newtype in order to remove the extra indirection.
It is actually a newtype, and has been at least since base-22.214.171.124 (the
oldest 'base' available on hackage).
Roman I. Cheplyaka :: http://ro-che.info/
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