Sieve of Eratosthenes

See From Mathematics to Generic Programming.

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<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.min.js"></script>
<body>
  <p id="time"></p>
</body>
<script>

// From Mathematics to Generic Programming, p. 27.

var worker = new Worker("./worker.js");

// Compute prime less than 100,000.
worker.postMessage({ n: 100000});

worker.onmessage = function(event) {
  switch (event.data.type) {
    case "end": return ended(event.data);
  }
};

// Render computed primes when the Web Worker is done.
function ended(data) {
  d3.select("#time")
    .style("margin-left", "5px")
    .style("font-size", "14px")
    .style("color", "#aaa")
    .style("font-family", "helvetica")
    .html("Sifted " + d3.format(",")(data.values.length) + " primes in " + data.elapsed + " ms");

d3.select("body").append("p")
    .datum(data.values)
      .html(function(d) { return d.join(" "); })
      .style("margin", "0 auto")
      .style("font-size", "18px")
      .style("font-family", "helvetica")
      .style("line-height", "1.4em")
      .style("width", "720px");
}

</script>

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