#3399: Generalize the type of Data.List.{deleteBy, deleteFirstsBy}
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Reporter: iago | Owner:
Type: proposal | Status: new
Priority: normal | Milestone:
Component: libraries/base | Version: 6.10.4
Severity: normal | Resolution:
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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Comment (by maeder):
Another argument against this proposal is, that an "equality" function
taking different argument types is rather unintuitive. Who actually needs
this generalization and is able to understand this from the documentation?
Orthogonality would also require to check if the other "By"-functions can
be generalized to swallow an "(b -> a -> Bool)" argument. (Indeed
`intersectBy` could be generalized, too.)
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3399#comment:4>
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