I have developed a haskell application which is tested with WinHugs interpreter working fine 开发者_StackOverflow中文版.. when i try to comiple the same application using WinGHCi it prompts a error
In answering a question on stackoverflow, I noticed that GHCi (interactive) is开发者_StackOverflow assigning a too-restrictive type in a let statement. Namely, given the code,
Following an example in http://en.wikibooks.org/wiki/Haskell/Beginning Prelude> let abs x = if x < 0 then -x else x
I was playing around with a simple program in Haskell: hello :: String -> String hello s = \"Hello, \" ++ (trim s) ++ \"!\\n\"
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari
Can anyone explain this to me? I\'m using a recent version of the GHC. Prelude> let f x = 1/((x**2)-36)
This question already has answers here: Closed 11 years ago. Possible Duplicate: Update a list of a list of elements in a single list?
I\'m using Haskell 2010.1.0.0.1 with GHC 6. Typing :t at the GHCi prompt followed by the name of a function shows us the type of the function. Is there a way to view the function definition 开发者_如何
It appears to be impossible to introspect type class constraints on functions and data types and such. However, ghci appears to do it.开发者_JAVA技巧
I\'m going through the \'Learn you a Haskell\' tutorial and I am at this part: lucky :: (Integral a) => a -> String