comparing ECMA6 sets for equality

by

Try this:

const eqSet = (xs, ys) =>
    xs.size === ys.size &&
    [...xs].every((x) => ys.has(x));

const ws = new Set([1, 2, 3]);
const xs = new Set([1, 3, 2]);
const ys = new Set([1, 2, 4]);
const zs = new Set([1, 2, 3, 4]);

console.log(eqSet(ws, xs)); // true
console.log(eqSet(ws, ys)); // false
console.log(eqSet(ws, zs)); // false

More Related Contents:

  1. es6 Map and Set complexity, v8 implementation
  2. How to reliably check an object is an EcmaScript 6 Map/Set?
  3. Simplest way to merge ES6 Maps/Sets?
  4. Understanding members of Symbol – function constructor
  5. Find list of strings that matches a pattern that start with a special character « and end with a special character »
  6. Unable to access React instance (this) inside event handler [duplicate]
  7. Javascript object literal: what exactly is {a, b, c}?
  8. ES6 Modules: Undefined onclick function after import
  9. Spread Syntax ES6
  10. Async function not returning value, but console.log() does: how to do? [duplicate]
  11. ES6 Object Destructuring Default Parameters
  12. How to convert a plain object into an ES6 Map?
  13. Javascript ES6 TypeError: Class constructor Client cannot be invoked without ‘new’
  14. ES6 modules in the browser: Uncaught SyntaxError: Unexpected token import
  15. Why do I need to await an async function when it is not supposedly returning a Promise?
  16. Scope of Default function parameters in javascript
  17. React useState hook event handler using initial state
  18. Is there a downside to using ES6 template literals syntax without a templated expression?
  19. Transforming a Javascript iterable into an array
  20. “This” within es6 class method [duplicate]
  21. Syntax error in IE using ES6 arrow functions
  22. Get the class name of ES6 class instance
  23. Using Array objects as key for ES6 Map
  24. Mixins for ES6 classes, transpiled with babel
  25. Get list of duplicate objects in an array of objects
  26. destructuring falsy and null with default parameters
  27. What can we do with ES6 Generator that we cannot with for loop?
  28. How to namespace es6 classes (for React components)
  29. functional way to iterate over range (ES6/7) [duplicate]
  30. ES6 module scope

Leave a Comment