I\'m trying to learn some Template Haskell. As an exercise, I wrote a function that can generate things like isLeft and isRight (inspired by this question). Here\'s my humble attempt:
I\'m trying to learn some Template Haskell. As an exercise, I wrote a function that can generate things like isLeft and isRight (inspired by this question). Here\'s my humble attempt:
Coming from (SWI) Prolog I find it very difficult to have Haskell give output on the fly. The simplest example, I\'d like Haskell to print something on every iteration:
What is the simplest way to make a confirmation dialog in Yesod? In some cases, when a form is posted, I want to ask for confirmation before carrying out the action. I imagine this working by sending
As shown below, in Haskell, it\'s possible to store in a list values with heterogeneous types with certain context bounds on them:
I know I can usually just pattern match, but sometimes I would find these functions useful: isLeft= either (const True) (const False)
I would be interested in a small exam开发者_如何学Gople of van Laarhoven\'s isomorphism lenses, applied to a data type like data BValue = BValue { π :: Float, σ :: Float, α :: Float } deriving Show
I have an exam on thursday about Functional programming and I’m pretty sure that I will have to do a TAD with Polynomials. I’m adding polynomials for the moment like this:
I am getting my feet wet writing concurrent programs in Haskell with GHC for multicore machines. As a first step I decided to write a program that reads and writes concurrently to an IOArray. I had th
I\'m reading 512^2 whitespace delimited doubles written in a text file to my Erlang program by piping them to stdin.
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