[Haskell-beginners] How to show the help page of a function

[Peng Yu]

$ ghci
GHCi, version 8.10.4: https://www.haskell.org/ghc/  :? for help
Prelude> :doc many

<interactive>:1:1: error: Not in scope: ‘many’

Any way to automatically determine the module to load and load it
automatically in the command line?

On 5/26/21, Francesco Ariis <fa-ml at ariis.it> wrote:
> Hello Peng,
>
> Il 26 maggio 2021 alle 18:22 Peng Yu ha scritto:
>> I want to check the help page of a function in haskell. For example,
>> to check the help page of "many", could anybody help me know to get to
>> its help page? Thanks.
>
> A quick way to do it is :doc inside ghci, like
>
>     λ> :doc head
>      /O(1)/. Extract the first element of a list, which must be non-empty.
>
> If you prefer something in your web-browser, hoogle can help you
>
>     https://hoogle.haskell.org/?hoogle=many&scope=set%3Astackage
>
> Does this help?
> —F
>
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-- 
Regards,
Peng