curried | Awesome curried standard library | Functional Programming library
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Awesome curried standard library.
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Lines of Code : 128License : Strong Copyleft (CC BY-SA 4.0)
Copyimport React, { createRef, useRef } from "react";
import { render } from "react-dom";
const App = () => {
const selectedElements = [
"Item One",
"Item Two",
"Item Three",
"Item Four",
"Item Five"
];
// React $ cd frontend-dev
$ npm init
"devDependencies": {
"@babel/core": "^7.2.2",
"@babel/preset-env": "^7.3.1",
"babel-loader": "^8.0.5",
"webpack": "^4.29.3",
"webpack-cli": "^3.2.3"
}
#lang racket
(define ((weighted-sum . ws) . vs) ;; curried form syntactic sugar
(let loop ((acc 0)
(ws ws)
(vs vs))
(match* (ws vs)
;; both lists have at least one value
[((list w ws ...) (listclass App extends React.Component {
constructor (props) {
super(props);
// I am storing the inputs definition here, but
// it could be something that you retrieve from
// your redux store or an API call
this.state = {let picture = document.querySelector('.c-picture img').src;
if (!document.querySelector('.c-picture img').src) {
let picture = 'No Link'; } //throws error
async function scrape3() {
// ...
for (let iCommunity Discussions
Trending Discussions on curried
QUESTION
I have a following composable:
...ANSWER
Answered 2021-Jun-15 at 09:08Judging from the curry api, curry a function either calls the function if all its parameters are provided or returns a new function that requires only a subset of parameters if some are provided.
For example in your code
QUESTION
Let's take the following filter function:
ANSWER
Answered 2021-Jun-15 at 06:05Yes, your double lambda approach does work. But there are nicer ways to do this too.
It turns out define can do this directly. The following two pieces of code are identical:
QUESTION
I have the following function to scale a (2-col) matrix:
...ANSWER
Answered 2021-Jun-14 at 22:28Your last attempt is correct: you'll have to extract the lambda used for scale outside the map call. You can't modify the innermost lambda, map expects a lambda with one argument, you can't pass a nested lambda there. So if you want to curry the scale there's no option but:
QUESTION
Trying to understand callPackage, so looked up its implementation where it uses lib.functionArgs (source), but there is already a builtins.functionArgs primop, an alias of __functionArgs (implemented in C).
lib.functionArgs is defined as
ANSWER
Answered 2021-Apr-16 at 14:44lib.functionArgs wraps builtins.functionArgs in order to provide reflective access to generic functions.
This supports reflection with builtins.functionArgs:
QUESTION
I am trying to understand how the below code works. How is it that the f1 function can chain the calls using andThen when the return types don't align exactly?
It seems the Future[Int] value of inner2 is lost when I call it last in the function f1.
So from what I understand the flow works like this:
f1is called passing user as an argument.inner1is called, passing user and it returns the Future of either boolean or user.- the
andThenis called, passing user as an argument, but somehow also passing the return value of the call toinner1? Is this curried?? - Doesn't
inner2respond with a different return type, how is the Future[Int] just lost?
The code:
...ANSWER
Answered 2021-Mar-31 at 20:36inner1() returns a Future.
As @LuisMiguel has pointed out, you're calling andThen() on that Future
andThen(), on a Future, takes a PartialFunction[Try[T],U] where T is the Future's return type, in this case Either[Boolean,User].
The PartialFunction, i.e. inner2(), is applied as a side-effecting callback on the Future, so its return value, the Future[Int] in this case, is discarded.
QUESTION
I am pretty new to Scheme, and I am trying to devise a more generalized uncurry function in Scheme. I am trying to have it take in a curried function with "n" parameters, and return the result of applying said function to all parameters at once. So something like ((uncurry (curry +)) 1 2 3) might return 6.
ANSWER
Answered 2021-Apr-09 at 13:10A generic uncurry can be written to call a function, f, with arguments, t, one at a time -
QUESTION
I have ported the following code from Django 2.2 to Django 3.1, and replaced django.utils.functional.curry with functools.partialmethod:
ANSWER
Answered 2021-Apr-08 at 03:51So after a week or two of no answers, and a little more experimentation, I've given up on trying to get an attribute to stick to a partialmethod and instead dynamically defined a local function, and used the new @admin.display decorator from Django 3.2 to set the admin attributes, though the same could have been achieved without that syntactic sugar:
QUESTION
Say I have the following class and curried function:
...ANSWER
Answered 2021-Apr-07 at 18:45shapeless 2.4.0-M1 can curry polymorphic functions via Curried type class
QUESTION
I've encountered a slight problem where I've written some code where I've automated a script to track the users interactions with a UI, including mousemove & click events. If I didn't have to worry about making it responsive, then I could probably call it a day & ship the work that I've done already, however my brain is seeking some wizardry knowledge, I'm struggling to make it super responsive. Here's just a quick example of the kinda thing that I'm working on, it's nothing genius, if anything I it's mostly heatmap.js that's doing the heavy lifting. Currently I'm just seeing if I can do this as a proof of concept more than anything else...
So currently, I'm tracking the event.pageX & event.pageY values to store exactly where an event took place, I'm also storing the window.innerWidth & window.innerHeight values to try & work out some function that would allow me to offset the positions based on the size(s) of other devices.
E.g. If you look at the sample image above, that's perfect for a static page, but if I were to say make the page a little more narrow, you can see here that it's doesn't line up with the image above:
Anyway, without blabbering on too much, here's some sample code:
...ANSWER
Answered 2021-Mar-26 at 10:28Perhaps you could change the setup and record what element an event is on and save the location data relative to that element, not the whole page. You record all events on the page still but you save the data relative to the elements instead of the whole page, which prevents you from mashing the data together in your heatmap afterwards when you view it over your website at various widths.
Say you you have a setup like this in pseudocode:
QUESTION
The is an exercise from "Haskell Programming from First Principles" that asks the reader to re-implement the any function as myAny (a -> Bool) -> [a] -> Bool using folds, and in a point-free style (where possible).
I was stuck on this and was going to ask a question, but in the process of typing up my original question I came up with the following solution:
...ANSWER
Answered 2021-Mar-25 at 23:28The reason your first example doesn’t work is that it ends up trying to pass map f as an argument to foldr:
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