[英]Hayoo/Hoogle not matching monomorphic/less polymorphic signatures with polymorphic ones
I'm trying to understand if there's a fundamental reason for why Hoogle and Hayoo aren't matching, for instance 我正在尝试了解是否有一个为什么Hoogle和Hayoo不匹配的根本原因,例如
(b -> c) -> (b' -> c') -> (b, b') -> (c, c')
to 至
a b c -> a b' c' -> a (b, b') (c, c')
which happens to be the type of Control.Arrow.***
: 碰巧是Control.Arrow.***
的类型:
(***) :: a b c -> a b' c' -> a (b, b') (c, c')
— is this likely just something that's as-of-yet unimplemented, or is there something fundamental that is preventing this sort of type based search from ever being implemented? —这可能只是尚未实现的事情,还是有某种根本性的因素在阻止这种基于类型的搜索的实现?
With Hoogle, it seems to be a consequence of how ->
is handled. 使用Hoogle,这似乎是->
处理方式的结果。 Issue #64 in the GitHub tracker , which is very similar to what we are discussing here, includes this comment by Neil Mitchell: GitHub跟踪器中的#64问题与我们在此处讨论的非常相似,其中包含Neil Mitchell的评论:
Currently I quickly split out the result type from the arguments. 目前,我快速从参数中分离出结果类型。 I guess one approach would be to find instances for
->
and pregenerate a version with->
substituted in. 我猜一种方法是找到->
实例,并用->
替换后预生成一个版本。
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