[Haskell-beginners] Re: How to import the Data.Char library in Hugs?

[Benjamin L.Russell]

My apologies; another respondent in this forum responded in a private
e-mail message that I had misrecognized your ":l" (a colon followed by
a lowercase 'L') for a vertical bar; I was using a variable-width
font; perhaps I should have double-checked using a fixed-width font.

I stand (er, sit, rather) corrected, as follows:

--8<---------------cut here---------------start------------->8---
Hugs>:l Data.Char
Data.Char>:?
--8<---------------cut here---------------end--------------->8---

Incidentally, if WinHugs cannot have multiple loaded modules unless
they are put in a file and loaded therein, then what is the difference
between the ":l" (a colon followed by a lowercase 'L') and ":a" (a
colon followed by a lowercase 'A') commands?

-- Benjamin L. Russell

On Fri, 18 Sep 2009 11:39:50 +0900, Benjamin L.Russell
<DekuDekuplex at Yahoo.com> wrote:

>On Thu, 17 Sep 2009 15:02:21 +0200, Adrian Neumann
><aneumann at inf.fu-berlin.de> wrote:
>
>>You do
>>
>>> :l Data.Char
>
>That command didn't work; see the following results:
>
>--8<---------------cut here---------------start------------->8---
>Hugs>:| Data.Char
>Command not recognised.  Type :? for help
>Hugs>
>--8<---------------cut here---------------end--------------->8---
>
>-- Benjamin L. Russell
>
>>
>>As far as I know you can't have multiple loaded modules unless you put
>>them in a file and load that.
>>
>>Regards,
>>
>>Adrian
>>
>>Benjamin L.Russell schrieb:
>>> My apologies if this is an extremely elementary question, but I am
>>> having difficulties in importing the Data.Char library in Hugs.
>>> 
>>> In GHCi, the command "import Data.Char" works correctly, as follows:
>>> 
>>> --8<---------------cut here---------------start------------->8---
>>> GHCi, version 6.10.3: http://www.haskell.org/ghc/  :? for help
>>> Loading package ghc-prim ... linking ... done.
>>> Loading package integer ... linking ... done.
>>> Loading package base ... linking ... done.
>>>    ___         ___ _
>>>   / _ \ /\  /\/ __(_)
>>>  / /_\// /_/ / /  | |   GHC Interactive, for Haskell 98.
>>> / /_\\/ __  / /___| |   http://www.haskell.org/ghc/
>>> \____/\/ /_/\____/|_|   Type :? for help.
>>> 
>>> Prelude> import Data.Char
>>> Prelude Data.Char>
>>> --8<---------------cut here---------------end--------------->8---
>>> 
>>> However, in Hugs, the same command fails with an error, as follows:
>>> 
>>> --8<---------------cut here---------------start------------->8---
>>> __   __ __  __  ____   ___ _________________________________________
>>> ||   || ||  || ||  || ||__      Hugs 98: Based on the Haskell 98 standard
>>> ||___|| ||__|| ||__||  __||     Copyright (c) 1994-2005
>>> ||---||         ___||           World Wide Web: http://haskell.org/hugs
>>> ||   ||                         Bugs: http://hackage.haskell.org/trac/hugs
>>> ||   || Version: 20051031       _________________________________________
>>> 
>>> Haskell 98 mode: Restart with command line option -98 to enable
>>> extensions
>>> 
>>> Type :? for help
>>> Hugs> import Data.Char
>>> ERROR - Syntax error in expression (unexpected keyword "import")
>>> Hugs>
>>> --8<---------------cut here---------------end--------------->8---
>>> 
>>> Does anybody know how to import the Data.Char library in Hugs?
>>> 
>>> -- Benjamin L. Russell
>>
-- 
Benjamin L. Russell  /   DekuDekuplex at Yahoo dot com
http://dekudekuplex.wordpress.com/
Translator/Interpreter / Mobile:  +011 81 80-3603-6725
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