[Haskell-cafe] Simple List Question
Hello Little Problem, hope that somebody can help me I have a list main [(1,2,3),(4,5,6),(3,4,5)] and i want all Elements at the 1. Pos. in new List: [1,4,3] Thanks for help -- View this message in context: http://www.nabble.com/Simple-List-Question-tf1880239.html#a5139831 Sent from the Haskell - Haskell-Cafe forum at Nabble.com. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] ACross
Hello, Can somebody help me My Problem is to define a code for: cross 7 -- means 7*7 +++ ++ ++ + + + + +++ + + + + ++ ++ +++ Another Example cross 13 -- 13*13 + ++ ++ + + + + ++ ++ + + + + ++ ++ + + + ++ ++ + + + + ++ ++ + + + + ++ ++ + Can I use putString ??? Thanks for any help -- View this message in context: http://www.nabble.com/ACross-t1813549.html#a4943328 Sent from the Haskell - Haskell-Cafe forum at Nabble.com. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Sets symmetric difference
Hello, Know Somebody the code for symmetric difference (Sets) examples symmetric_difference [1..8][5..7] [1,2,3,4,8] symmetric_ difference [1..8][] [1,2,3,4,5,6,7,8] symmetric_ difference [1..12][10..20] [1,2,3,4,5,6,7,8,9,13,14,15,16,17,18,19,20] Thanks for Help -- View this message in context: http://www.nabble.com/Sets-symmetric-difference-t1805165.html#a4919646 Sent from the Haskell - Haskell-Cafe forum at Nabble.com. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] putStrLn
Hello, Can somebody help me I want to work with putStrLn main n = putStrLn * for example How must I define the code that: main 5 * Thanks for any help -- View this message in context: http://www.nabble.com/putStrLn-t1799896.html#a4905456 Sent from the Haskell - Haskell-Cafe forum at Nabble.com. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] elementsinlist
Hallo I search a code for elements_in_List([1,2],[1,2]). True elements_in_List([1,8],[1,2,3,4,8]). True elements_in_List([2,1],[1,2]). True elements_in_List([1,1],[1]). False I have a code elements_in_List :: Eq a = [a] - [a] - Bool elements_in_List [] _ = True elements_in_List _ [] = False elements_in_List (x:xs) (y:ys) | x == y = elements_in_List xs ys | True = elements_in_List (x:xs) ys but it failed at elements_in_List([2,1],[1,2]). True I hope somebody can help me Please don't use built-in-Functions. Thanks for Help -- View this message in context: http://www.nabble.com/elementsinlist-t1782975.html#a4855615 Sent from the Haskell - Haskell-Cafe forum at Nabble.com. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Problem in code
hello, I can not find the problem, I use WinHugs and shows me(Syntax error in input (unexpected keyword where). here is my code: f :: (Float,Float) - Float f (x,y) = (a(x,y) + 4) * (b(x,y) + 3) where a :: (Float,Float) - Float a(x,y) = (x + y)*2 b :: (Float,Float) - Float b(x,y) = (y - x)*5 How can I define this code with let in? Thanks for any help. -- View this message in context: http://www.nabble.com/Problem-in-code-t1742233.html#a4734684 Sent from the Haskell - Haskell-Cafe forum at Nabble.com. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] changing out
hello, i want to change my input integers In 23 98 Out 98 23 I think its simple... sorry my first steps in Haskell thanks for solutions. -- View this message in context: http://www.nabble.com/changing+out-t1707014.html#a4634189 Sent from the Haskell - Haskell-Cafe forum at Nabble.com. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] swap a pair of integers
hello, i want swap a pair of integers for example Main 17 out 71 Can somebody help me? -- View this message in context: http://www.nabble.com/swap+a+pair+of+integers-t1700880.html#a4615989 Sent from the Haskell - Haskell-Cafe forum at Nabble.com. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
