ghci

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How to provide explicit type declarations for functions when using GHCi?

How to I define the equivalent of this function (taken from learnyouahaskell) inside GHCi? import Data.List[详细]

2023-01-04 13:40 分类：问答
Info on type family instances

Intro: While checking out snoyman\'s \"persistent\" library I found myself wanting ghci\'s (or another tool) assistance in figuring out stuff.[详细]

2023-01-02 20:09 分类：问答
ghci not loading function from file

In test.hs, I have: doubleMe x = x + x In ghci, I type: Prelude> :l test [1 of 1] Compiling Main( test.hs, interpreted )[详细]

2023-01-01 14:03 分类：问答
GHCi error: Not in scope 'removeNonUpperCase'

I\'m trying to compile this function from Learn You a Haskell for Great Good. removeNonUppercase st = [ c | c <- st, c `elem` [\'A\'..\'Z\']][详细]

2022-12-25 20:51 分类：问答
Can GHCi tell me the type of a local Haskell function?

Is it possible to query the ghci for the type i开发者_Python百科t inferred for a function inside another function?This is a quick and ugly hack, but what I usually do is just use the function in the w[详细]

2022-12-18 11:09 分类：问答
Why does ghci say that 1.1 + 1.1 + 1.1 > 3.3 is True?

I\'ve been going through a Haskell tutorial recently and noticed this behaviour when trying some simple Haskell expressions in the interactive ghci shell:[详细]

2022-12-16 03:28 分类：问答
How to use 'oneof' in quickCheck (Haskell)

I am trying to write a prop that changes a Sudoku and then checks if it\'s still valid. However, I am not sure how to use the \"oneof\"-function properly. Can you give me some hints, please?[详细]

2022-12-13 11:46 分类：问答
How to use fromInteger in Haskell?

One way to calculate 2^8 in haskell is by writing product(replicate 8 2) When trying to create a function for this, defined as follows...[详细]

2022-12-10 13:00 分类：问答
how to write numbers in lambda using ghci

I am new to Haskell, using Ghci. I have a function, called three, that I want to write as let three =\\x->(\\y->(x(x(x y))))[详细]

2022-12-09 13:12 分类：问答