Top "Destructuring" questions

"Destructuring allows you to bind a set of variables to a corresponding set of values anywhere that you can normally bind a value to a single variable" ("Common Lisp the Language").

JavaScript variable assignments from tuples

In other languages like Python 2 and Python 3, you can define and assign values to a tuple variable, and retrieve their …

javascript tuples destructuring
Destructuring to get the last element of an array in es6

In coffeescript this is straightforward: coffee> a = ['a', 'b', 'program'] [ 'a', 'b', 'program' ] coffee> [_..., b] = a [ 'a', 'b', …

ecmascript-6 destructuring
React JS Error: Invalid attempt to destructure non-iterable instance

I have a sort filter that takes an array to populate the options. Trying to see the option value equal …

reactjs ecmascript-6 destructuring
One-liner to take some properties from object in ES 6

How one can write a function, which takes only few attributes in most-compact way in ES6? I've came up with …

javascript ecmascript-6 ecmascript-harmony destructuring ecmascript-next
Is it possible to destructure onto an existing object? (Javascript ES6)

For example if I have two objects: var foo = { x: "bar", y: "baz" } and var oof = {} and I wanted to …

javascript ecmascript-6 destructuring
Types in object destructuring

This const { foo: IFoo[] } = bar; and this const { foo: Array<IFoo> } = bar; will reasonably cause an error. And …

typescript destructuring
Assign multiple variables at once with dynamic variable names

I'm aware I can assign multiple variables to multiple values at once with: (foo, bar, baz) = 1, 2, 3 And have foo = 1, bar = 2, …

python mass-assignment destructuring
TypeError: Cannot destructure property `db` of 'undefined' or 'null'

I am getting a TypeError in my variable assignment for mongodb connection. Is there a workaround for this? //server.js …

node.js mongodb typeerror var destructuring
Destructuring in Node.JS

This recent video claims that EMCAScript 6 destructuring is already partially implemented in Node.JS. I have tried various examples (using …

javascript node.js ecmascript-6 destructuring
ES6 Destructuring and Module imports

I was under the impression that this syntax: import Router from 'react-router'; var {Link} = Router; has the same final result …

javascript ecmascript-6 destructuring es6-modules