I am trying to implement a property (real estate) chain Each chain item should know which chain item is above/below it A chain item can have its own sub-chain, and this in turn applies to its sub-chain items as well…
I am very fond of the returns library in python, and I would like to use it more. I have a little issue right now. Currently, I have a function that uses a redis client and gets the value corresponding…
How could this be done without repeating "DoTheNextThing();"? if (dosomething) DoSomething(function () { DoTheNextThing(); }) else DoTheNextThing(); I haven't tried anything else because I can't think of anything else to try.
The first book I have bought on JavaScript was unfortunately not for beginners. The book is "the joy of JavaScript" from Luis Atencio. I am still trying to understand some concept in this book 2 years after... There is a…
UseCallback(), are function paramaters always added ot the dependency array in default? whereas variables used directly wihtin the function's body should only be added if I am sure they would be updated? const User = ({}) => { const [state,…
I am working on functional programming using fp-ts library. Here is my code and my problem: import * as TE from 'fp-ts/TaskEither'; import { pipe } from 'fp-ts/lib/function'; function getName(): TE.TaskEither<Error, String> { return TE.right('John Doe'); } function getAge(): TE.TaskEither<Error,…
Is this function pure or impure? function greet(name) { return "Hi I'm " + name; } The property of pure function is that it has no side effects and always returns the same output for the same input. Here, it…
In this snippet, I try to map [RegisteredMediaAttachment] to [BasicAttachmentInput], but only for those items that have a parseable uploadUrl. private func createSecondaryAttachments( _ attachments: [RegisteredMediaAttachment] ) -> [BasicAttachmentInput] { return attachments.compactMap { guard let name = URL(string: $0.registration.uploadUrl) else…
I have a function await mainFunction(function1, function2, function3) I also want to pass multiple functions into the mainFunction const mainFunction = async (function1, function2, function3) => async ({ param1, param2, param3}) => { const params = { param1, param3, param3};…
I'd like to use this vector of keys const vec_of_vals = ["one", "two", "three", "four"] to group and filter an array of objects const data = [ {grade: "one"}, {grade: "one"}, {grade: "one"}, {grade: "two"}, {grade: "four"}, {grade: "four"}, {grade:…