PA6 : ∀{m n} -> m ≡ n -> n ≡ m is the axiom I am trying to solve and support, I\'ve tried using a cong (from the core library) but am having troubles with the cong constructor
mifun s = foldr op 0 s where op x r = head x + r Is the开发者_Python百科re a way to make ghci tell me?try :t mifun (short for :type mifun)
Suppose that my Haskell function is given an input, which is supposed to be the number of a unicode code point. How can one convert this to t开发者_开发知识库he corresponding character?
I\'m reading the Monads chapter in Real World Haskell (chapter 14). A function is defined as follows: type RandomState a = State StdGen a
After updating to Parsec 3.1 from 2.x, code using many1, such as word = many1 letter fails 开发者_如何转开发with
I understand that Haskell\'s filter is a high order function (meaning a function that takes another function as a parameter) that goes through a list checking which element f开发者_C百科ulfills certai
This question is for the people who know both Haskell (or any other functional language that support开发者_开发百科s Higher-kinded Types) and C++...
I am writing a custom read function for one of the data types in my module. For eg, when I do read \"(1 + 1)\" :: Data, I want it to return Plus 1 1. My data declaration is da开发者_开发问答ta Data =
I\'m just digging a bit into Haskel开发者_StackOverflow中文版l and I started by trying to compute the Phi-Coefficient of two words in a text. However, I ran into some very strange behaviour that I can
I have the following code: main = do putStr \"Test input : \" content <- getLine putStrLn content When I run it (with runhaskell) or compile it (ghc 6.10.4) the result is like this:
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