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Older Posts 20 shown
Post #1590 6.41K
Sponsored by Bryntum ๐Ÿ‘ฎโ€โ™€๏ธ
World Class Web Components

โ“ CHALLENGE


const weakMap = new WeakMap();
const obj = {};

(function() {
  const internalObj = {};
  weakMap.set(internalObj, 'hidden');
  obj.ref = internalObj;
})();

delete obj.ref;

const result = weakMap.has(obj.ref);

console.log(result);
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Post #1589 6.22K
๐Ÿ˜ญ ...
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Post #1588 6.08K
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Post #1587 6.24K
CHALLENGE

const weakMap = new WeakMap();
const array = [{}, {}];

array.forEach(obj => weakMap.set(obj, obj));
const result = array.map(obj => weakMap.get(obj) === obj);

console.log(result);
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Post #1586 6.54K
โœŒ๏ธ ECMAScript Safe Assignment Operator Proposal

We often feature ECMAScript proposals that are in their later stages, but how about a brand new one you could get involved with? This one proposes an interesting additional bit of language syntax (`?=`) that returns a [error, value] tuple from an assignment.

Arthur Fiorette
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Post #1585 6.01K
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Post #1584 6.3K
CHALLENGE

const weakMap = new WeakMap();
const gen = (function* () {
  yield { key: 'value1' };
  yield { key: 'value2' };
})();

const obj1 = gen.next().value;
const obj2 = gen.next().value;

weakMap.set(obj1, 'stored value1');
weakMap.set(obj2, 'stored value2');

const result = [...gen].map(obj => weakMap.get(obj));

console.log(result);
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Post #1583 6.9K
๐Ÿ˜‰ A day as a Remote Software Engineer in Helsinki, Finland

I've always wanted to create a video series to share my experiences and work style as a remote software engineer. I finally started this journey and am excited to make more videos like this...

nairi
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Post #1582 6.36K
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Post #1581 6.59K
CHALLENGE

const weakMap = new WeakMap();
const obj = {};
const gen = (function* () {
  yield 'value1';
  yield 'value2';
})();

weakMap.set(obj, gen.next().value);

console.log(weakMap.get(obj));
console.log(gen.next().value);
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Post #1580 7.09K
๐Ÿ“ธ Immerse Yourself in Generative Art: An Angular WebXR Adventure

If you missed the Google I/O Angular session, you missed not only the latest updates on Angular but also the Generative Art Gallery demo which I had so much fun building. The demo has all of my favorite technologies, including AI, Angular and WebXR. It also was a very pleasant developer experience. Let me tell you why!

AyลŸegรผl Yรถnet
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Post #1579 5.9K
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Post #1578 6.28K
CHALLENGE

const weakMap = new WeakMap();
const obj = {};

(function() {
  const obj1 = { name: 'inner' };
  weakMap.set(obj1, 'inner value');
})();

const result = weakMap.get(obj);

console.log(result);
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Post #1577 6.69K
๐ŸŒฒ ๐Ÿงต worker_map: Tread-safe map structure for worker_threads

A simple abstraction for Node.js worker_threads, allowing you to create and share a Map (hash table) between worker threads and the main process.
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Post #1576 6.53K
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Post #1575 6.27K
CHALLENGE

function* idGenerator() {
  let id = 1;
  while (true) {
    yield id++;
  }
}

const gen = idGenerator();
const weakMap = new WeakMap();
const objs = [{}, {}, {}];

objs.forEach(obj => weakMap.set(obj, gen.next().value));

const result = objs.map(obj => weakMap.get(obj)).filter(id => id % 2 === 0);

console.log(result);
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Post #1573 6.52K
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Post #1572 6.24K
CHALLENGE

const weakMap = new WeakMap();
const obj1 = {};
const obj2 = {};

weakMap.set(obj1, 'value1');
weakMap.set(obj2, 'value2');

const arr = [obj1, obj2];
const result = arr.map(obj => weakMap.get(obj)).join(', ');

console.log(result);
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