ghci

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In GHCi, why does the kind of the function arrow `:kind (->)` include question marks `(->) :: ?? -> ? -> *`? [duplicate]

This question already has an answer here: Closed 10 years ago. Possible Duplicate: Haskell Weird Kinds: Kind of (->) is ?? -> ? -> *[详细]

2023-02-18 21:07 分类：问答
Debugging infinite loops in Haskell programs with GHCi

For the first time I\'ve encountered an infinite loop in a Haskell program I\'m writing. I\'ve narrowed it down to a quite specific section of code, but I cannot seem to pinpoint exactly where I have[详细]

2023-02-17 14:41 分类：问答
How to find type signatures of multiple imported methods in GHCI

I\'m using a library, which I\'ve loaded into GHCI. From the names of the functions is not obvious to me which one I should be using; I\'m sure it exists, and want to see a list of type signatures of[详细]

2023-02-16 20:05 分类：问答
Map newlines in GHCi

Simple question, but I can\'t seem to figure it out. I have a list, and I want to print out each element of it on its own line. I can do[详细]

2023-02-14 04:47 分类：问答
Open Browser From Haskell Interpreter

I\'ve been messing around a lot with oeis.org, I found a module on Hackage that provides an interface to oeis.org (Math.OEIS), but it displays its results on the command line. I was won开发者_Python百[详细]

2023-02-09 12:34 分类：问答
Haskell modules: hidden names and ghci

I\'m trying to export just a subset of names from a Haskell module, but ghci happily lets me access even the hidden names.[详细]

2023-01-29 22:26 分类：问答
Function variable not in scope Haskell

Hi i have the following code import Data.Maybe import Test.QuickCheck import System.Random rndExpr :: Gen Expr ->IO Expr[详细]

2023-01-28 23:05 分类：问答
need help with haskell expression (Not in scope compiler error)

Hi I have the following code expression :: String →Maybe Expr expression s =case parse expr s\' of Just (a,\"\") →Just a[详细]

2023-01-28 05:53 分类：问答
need help writing a function candidates in Haskell

Hi take a look atthis thread already processing this subject And also this thread might be of intrest.[详细]

2023-01-28 00:37 分类：问答
Persistent console history in ghci

On 6.12.2, this just worked for me, I think. But now I\'m on a new box with 6.12.3 (generic unix binary), and there\'s obviously some setting I\'m missing.[详细]

2023-01-26 15:25 分类：问答