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Today's Topics:
1. How to show the help page of a function (Peng Yu)
2. Re: How to show the help page of a function (Francesco Ariis)
3. Re: How to show the help page of a function (Peng Yu)
----------------------------------------------------------------------
Message: 1
Date: Wed, 26 May 2021 18:22:15 -0500
From: Peng Yu <[email protected]>
To: [email protected]
Subject: [Haskell-beginners] How to show the help page of a function
Message-ID:
<cabrm6wktxpoogh_rj+hts7pyz7uwfovhakbeeszwrqwto2e...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Hi,
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.
--
Regards,
Peng
------------------------------
Message: 2
Date: Thu, 27 May 2021 01:27:06 +0200
From: Francesco Ariis <[email protected]>
To: [email protected]
Subject: Re: [Haskell-beginners] How to show the help page of a
function
Message-ID: <20210526232706.GA24795@extensa>
Content-Type: text/plain; charset=utf-8
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
------------------------------
Message: 3
Date: Wed, 26 May 2021 18:53:06 -0500
From: Peng Yu <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] How to show the help page of a
function
Message-ID:
<CABrM6w=6w_0h97vxah4_xwylhcms5apibhf+0-zm+aep7xr...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
$ 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 <[email protected]> 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
>
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
--
Regards,
Peng
------------------------------
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