JavaScript: Change function that accepts an array into a variadic function
JavaScript fundamental (ES6 Syntax): Exercise-43 with Solution
Write a JavaScript program to change function that accepts an array into a variadic function.
Note: Given a function, return a closure that collects all inputs into an array-accepting function.
- Given a function, return a closure that collects all inputs into an array-accepting function.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
const collectInto = fn => (...args) => fn(args);
const Pall = collectInto(Promise.all.bind(Promise));
let p1 = Promise.resolve(1);
let p2 = Promise.resolve(2);
let p3 = new Promise(resolve => setTimeout(resolve, 2000, 3));
Pall(p1, p2, p3).then(console.log); // [1, 2, 3] (after about 2 seconds)
Sample Output:
[1,2,3]
Flowchart:

Live Demo:
See the Pen javascript-basic-exercise-1-43 by w3resource (@w3resource) on CodePen.
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Previous: Write a JavaScript program to get a customized coalesce function that returns the first argument that returns true from the provided argument validation function.
Next: Write a JavaScript program to remove falsey values from an given array.
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JavaScript: Tips of the Day
Chunks an array into n smaller arrays
Example:
const tips_chunkIntoN = (arr, n) => { const size = Math.ceil(arr.length / n); return Array.from({ length: n }, (v, i) => arr.slice(i * size, i * size + size) ); } console.log(tips_chunkIntoN([1, 2, 3, 4, 5, 6, 7,8], 4));
Output:
[[1,2],[3,4],[5,6],[7,8]]
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