I get an error I don't know why b and the constraint (Set b, Set s) are being matched? I would expect the constraint to existentially quantify the ...
I get an error I don't know why b and the constraint (Set b, Set s) are being matched? I would expect the constraint to existentially quantify the ...
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Trying to write accesors to get a value of an object with a kind member, I get invalid indentation error in a macro I am not sure why I imagine I mig ...
i have this code here: what i need here is to create a single procedure with universal pram that accept any kind of input Types and save them to r ...
I'm trying to wrap my head around this blog post about the ConstraintKinds extension. There was a post in the comment section which I totally did not ...
I'm playing around with the ConstraintKinds in GHCi. In the linked post I found a nice example: But I can't get it to work. GHCi outputs the Constr ...
I've been reading the book "What I wish I knew when learning Haskell" and I stopped on this example: My question is: How can I create an instance o ...
I am currently working with old code, that calls the iand function with integers of different kinds as arguments. Here's a small example of what the c ...
In Haskell I find it difficult to completely grasp the purpose of a kind system, and what it truly adds to the language. I understand having kinds ad ...
I was caught off guard recently when I tried to pass a constructor for a type of kind * -> * -> *, with one bound type var, to a function expect ...
So having something like this: I now want to do something like this: (Same thing if I declare the trait extension as class TryOptWrapper extends ...
Been reading Learn You A Haskell For a Great Good ! and have big trouble with understanding instance and kind. Q1: So the type t in Tofu t acts as a ...
When expressing infinite types in Haskell: One can use a newtype to do it: Is there a newtype equivalent for kinds that allows one to express in ...
I wrote some code that takes a Heterogeneous List and indexes it. To do this I implemented my own Nat and Natural types. The Nat exists solely to e ...
I have enabled the kind compiler plugin addCompilerPlugin("org.spire-math" % "kind-projector" % "0.9.6") and I can now use the ? symbol e.g. Map[Strin ...
I would like to be able to explicitly apply an argument of kind other than Type to a dummy constructor purely for documentation purposes. However Type ...
I understand the following kinds: But what does this kind mean and what type might it represent? ...
This simple code doesn't compile The error message is I get in some sense that this actually defines a "family of type families" but I don't rea ...
I've previously defined a function which takes a list of Maybes and turns it into a Maybe of a list, like so: Now I want to redefine it to be compa ...
Browsing the haddocks of various packages I often come along instance documentations that look like this (Control.Category): or this (Control.Monad ...