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Today's Topics:
1. Re: Functions in "where" block. (Mateusz Kowalczyk)
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Message: 1
Date: Mon, 16 Jun 2014 01:39:33 +0200
From: Mateusz Kowalczyk <[email protected]>
To: [email protected]
Subject: Re: [Haskell-beginners] Functions in "where" block.
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
On 06/12/2014 04:21 AM, Kim-Ee Yeoh wrote:
> On Thu, Jun 12, 2014 at 8:54 AM, Venu Chakravorty <[email protected]> wrote:
>
>> fun.hs:4:15: parse error on input `='
>>
>
> The problem wasn't obvious until I copy-pasted it into an editor:
>
> You have tabs instead of spaces for the line defining ep.
>
> The rule of thumb is that your editor must expand all tabs into matching
> spaces for whitespace-sensitive languages like haskell. Or else you'll
> waste time with this kind of parsing errors.
>
> -- Kim-Ee
>
>
>
> _______________________________________________
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>
For reference, GHC treats hard tabs as 8 spaces.
Even in my mail client the problem is quite apparent[1].
Set your editor to use spaces only. I think [2] is the standard
reference for whitespace style.
[1]: http://fuuzetsu.co.uk/images/1402875503.png
[2]: http://urchin.earth.li/~ian/style/haskell.html
--
Mateusz K.
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