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Today's Topics:
1. Looking for a Mentor (heathmatlock)
2. construct list (Andy)
----------------------------------------------------------------------
Message: 1
Date: Fri, 23 Dec 2011 20:11:37 -0600
From: heathmatlock <[email protected]>
Subject: [Haskell-beginners] Looking for a Mentor
To: [email protected]
Message-ID:
<CABAYxNs0zRBRVeE2NWbU0-Qu8CemB5AAG+WmMhZvD9phQuEX=q...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi, I'm wanting to get started writing some Haskell code and would
find it helpful if someone were to meet with me regularly to work on
some problems; even if it's just going through Project Euler stuff.
Just need to speak with someone weekly checking in my progress and
discussing some of the methods used or which should have been used. I
certainly don't mind working on bugs for some Haskell related project
either. Any takers?
--
Heath Matlock
+1 256 274 4225
------------------------------
Message: 2
Date: Sat, 24 Dec 2011 05:35:13 -0500
From: Andy <[email protected]>
Subject: [Haskell-beginners] construct list
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have been trying to simulate "Russian peasant multiplication" in
Haskell , but I can't produce a list of tuples after I enter 2 integers.
I have tried constructing many accumulator functions to do so, but keep
getting IO errors. This is NOT a homework question. I am a senior
learning Haskell, and finding it very enjoyable, although frustrating at
times.
----------------------------------------------------------------------------------
main1 = do
putStrLn "Russian Peasant Multiplication \n"
putStrLn "Enter 2 integers : "
a <- getInt
b <- getInt
-- at this point I would like a list of tuples of the form [ (a
`div` 2 , b*2 )] , starting with the 2 initial integers, down to
-- where the first value is 1 in the last tuple: ie if the
initial numbers were 121 and 3 say , I'd like the list
-- [ (121,3) , (60,6) , (30,12) , (15,24) , (7,48) , (3,96) ,
(1,192) ] produced and available in main for further manipulation.
----------------------------------------
-- to read in an Int , I used :
getInt :: IO Int
getInt = do line <- getLine
return( read line :: Int)
------------------------------
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