Engineer at Mapbox, creator of Leaflet, algorithms geek, open source enthusiast, musician, father of twin girls, Ukrainian. 🇺🇦
Published
Edited
Dec 13, 2018
Importers
29 stars
primes = function* primes() {
yield 2; yield 3; yield 5; yield 7;
const sieve = new Map();
const ps = primes();
ps.next();
ps.next();
for (let p = 3, i = 9; true; i += 2) {
let s = sieve.get(i);
if (s !== undefined) {
sieve.delete(i);
} else if (i < p * p) {
yield i;
continue;
} else {
s = 2 * p;
p = ps.next().value;
}
let k = i + s;
while (sieve.has(k)) k += s;
sieve.set(k, s);
}
}
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.
