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Today's Topics:
1. Re: IO question (David McBride)
2. Re: How to install new GHC ? (Fabien R)
----------------------------------------------------------------------
Message: 1
Date: Tue, 12 Dec 2017 13:48:01 -0500
From: David McBride <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] IO question
Message-ID:
<can+tr42vqmttvhz-bsfy-t0pnt-lbnkxg_92yutdnwl_h36...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
No worries. I definitely should have mentioned fmap and <$> are the same.
On Tue, Dec 12, 2017 at 1:43 PM, Vale Cofer-Shabica <
[email protected]> wrote:
> I now, of course, feel silly because <$> is the infix version of fmap;
> apologies for list-spamming.
>
> -vale
>
> --
> vale cofer-shabica
> 401.267.8253 <(401)%20267-8253>
>
> On Tue, Dec 12, 2017 at 1:41 PM, Vale Cofer-Shabica <
> [email protected]> wrote:
>
>> Just to add to David's answer, when I find myself in situations like:
>> foo >>= return . bar
>>
>> hlint helpfully suggests:
>> fmap bar foo
>>
>> So you could also have:
>> fmap (splitOn ",") $ readFile "data.txt"
>>
>> -vale
>>
>> --
>> vale cofer-shabica
>> 401.267.8253 <(401)%20267-8253>
>>
>> On Mon, Dec 11, 2017 at 4:24 PM, mike h <[email protected]>
>> wrote:
>>
>>> Thank you David. Before posting I tried readFile "data.txt" >>= … but
>>> got errors as I didn’t use return.!!
>>>
>>> Mike
>>>
>>>
>>>
>>> On 11 Dec 2017, at 21:00, David McBride <[email protected]> wrote:
>>>
>>> splitOn "," <$> readFile "data.txt"
>>>
>>> or perhaps
>>>
>>> readFile "data.txt" >>= return . splitOn ","
>>>
>>> On Mon, Dec 11, 2017 at 3:56 PM, mike h <[email protected]>
>>> wrote:
>>>
>>>> I have
>>>>
>>>> input <- readFile “data.txt”
>>>> let input’ = splitOn “,” input
>>>> ….
>>>>
>>>> How do I make that into just one line?
>>>>
>>>> Thanks
>>>>
>>>> Mike
>>>> _______________________________________________
>>>> Beginners mailing list
>>>> [email protected]
>>>> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>>>>
>>>
>>> _______________________________________________
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>>> _______________________________________________
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>>
>
> _______________________________________________
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Message: 2
Date: Wed, 13 Dec 2017 11:30:23 +0100
From: Fabien R <[email protected]>
To: [email protected]
Subject: Re: [Haskell-beginners] How to install new GHC ?
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8
For debian users, these instructions [1] install ghc from scratch (I
used the cabal part).
[1] https://gist.github.com/yantonov/10083524
--
Fabien
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