Hello, PGLiteINSEE ParquetHello, apcachDruidJS workerHello, OrbitWord Tour: 40k words and their friendsHello, spectral.jsHello, petite-vueHello, @thi.ng/grid-iteratorsHello, thumbhashHello, SwissGLHello, QOI (and glitches)Hello, orbHello, cosmographHello, TabulatorUsing d3.blur with PlotMath.cbrtHello debounceColorcetHello, gliiHello, Open MeteoHello, PyWaveletsHello, typesenseHello, libgifHello, kmeans-engineHappy anniversary, Project Gutenberg!Hello, fflateHello, ArchieML!Hello, d3-bboxCollideHello, jsgeoda!Hello, EDTF!Hello, protovis!Hello, placekeyHello, fuse.jsHello, Reorder.jsHello, shadow DOMjszipHello, procedural-glHello, qhullHello, genetic-jsDruidJSHello, Tippy.jsHello, paintWorkletBig πHello, AutoencoderHello, Shakespearean UUIDsHello, ccwt.jsHello, constrainautorHello, talismanHello, polygon-offsetHello p-queueHello rollup-plugin-asciiHello, algebra.jsHello, pixi.jsHello, d3-renderHello zip/unzipCumulative Wikipedia DonationsHTML <details>regl textureHello, npyjsHello protobufHello, pencil touchHello, LOESSHello html2canvaslegra mapscolor2cssHello, ecsy2D point distributionsHello, delatinThe gpu.js loopDijkstra’s shortest-path treeHello nojacko/Dijkstras-jsHello, tcort/dijkstrajsHello, lambdabaa/dijkstraHello, gpu.js v2Hello jsqrHello qrcodeHello SharedArrayBufferHello GamePad APIHello vtk.jsHello nd4jsHello BiofabricTravelling with a self-organizing mapHello glitchHello UMAP-jsHello pandemoniumHello iocaneHello JSON-editorHello d3-griddingHello mljs/knnWorkerHello lalolibImage to GPU.jsImage to blink.jsTissot's indicatrixVega projectionsHello WebCLGLUsing d3-inertia with observableVideo contouring 3ngraph: pagerank, louvain…Union-FindPerceptron (simple statistics)mljsHello h3-jsEmoji FlagsHello, poisson-disk-sampling
Hello async-pool
task = (i, state) =>
new Promise(async (resolve, reject) => {
state.c++;
await Promises.delay(50);
const c = state.c; // measure concurrency in the middle of the task’s run
await Promises.delay(50 + 50 * Math.random());
state.c--;
resolve(c);
})
{
const state = { c: 0 };
const results = await Promise.all(
Array.from({ length: 20 }, (_, i) => task(i, state))
);
return results;
}
{
const state = { c: 0 };
const results = await asyncPool(
4,
Array.from({ length: 20 }, (_, i) => i),
i => task(i, state)
);
return results;
}
async function asyncPool(poolLimit, array, iteratorFn) {
const ret = [];
const executing = [];
for (const item of array) {
const p = Promise.resolve().then(() => iteratorFn(item, array));
ret.push(p);
const e = p.then(() => executing.splice(executing.indexOf(e), 1));
executing.push(e);
if (executing.length >= poolLimit) await Promise.race(executing);
}
return Promise.all(ret);
}
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
