I'm trying to figure out the type hinting for a couple of abstract classes that I want to use as base classes for classes have a create function. Spec ...

Quote from Python docs for Concatenate: The last parameter to Concatenate must be a ParamSpec or ellipsis (...). I know what ParamSpec is, but ...

I'm trying to create a base class that works for any CRUD in applications and I've seen the following implementation: Generic is a way to define ...

I'm trying to figure out typing in Python and I'm having trouble with the following code: I am using Pylance in VScode with typeCheckingMode: "stri ...

Let's say I have a class like Default There's a straightforward way to define instances for types that also have a Monoid instance, like but b ...

I am trying to make a Class with a has-a relationship to a generic BST class and it constructs the tree by reading in a comma delimited file. Here is ...

I have something like this: from typing import TypeVar, Generic, Tuple T = TypeVar('T') S = TypeVar('S') U = TypeVar('U') class Foo(Generic[T, S]): ...

I am getting a compiler error for the Applicative instantiation of Safeness, as follows: Compiler error: I understand that b doesn't have to be ...

I'd like to type: Instead tasks is of TaskContainer type, which extends interface DomainObjectCollection<T> extends Collection<T> ...

This is a pretty common JavaScript pattern: I'm trying to strongly type this in TypeScript, and I've gotten as far as something like the following: ...

I have a class: , for which I have defined the instances Now I want to define an instance for a pair of members of the class. The problem is ...

I've been digging out some old code (and frankly regretting some design decisions) but I realized I could never get the final function to compile and ...

Can we have type variables in JSDoc? For example I want to define identity function: But when I use it with concrete types id(2), editor always com ...

The Elm docs illustrate type variables like this: ...the type variable a can vary depending on how List.reverse is used. But in this case, we ha ...

If I want to have a type that can be multiple possible types, Unions seem to be how I represent that: U can be an int or a str. I noticed though t ...

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 ...

I'd like to document what T means in this class I could document T with T.__doc__ = "Represents ..." but I might want to use T it in several unrela ...

I have been trying to writing a program to implement polynomials on arbitrary field, a mathematical structure. I chose Haskell as the programming lang ...

I cannot find anyway in Haskell to specify the type of the call to 'neg': (V3 e) and e are both instances of Arith. Here I want to call the 'neg' a ...

Following up from a question I posted earlier, I am trying to understand the details of type parameter scope in function methods. For example: The ...