dbrockman

var digits = '0123456789' +
  'abcdefghijklmnopqrstuvwxyz' +
  'ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
  '-_';
var radix = digits.length;

function shorten_number(n) {
  var s = '';
  while (n > 0) {
    s = digits.charAt(n % radix) + s;

dbrockman

function flatten2D(array) {
  return array.reduce(function (result, item) {
    return result.concat(item);
  }, []);
}

dbrockman

function randomString(length) {
  var s = ((performance.now() % 1) + Math.random()).toString(35);
  return s.substr(-Math.max(0, Math.min(length, s.length - 2)));
}

dbrockman

function jenkins_hash(s) {
  var hash = 0, i = 0, l = s.length;
  for (; i < l; ++i) {
    hash += s.charCodeAt(i);
    hash += (hash << 10);
    hash ^= (hash >> 6);
  }
  hash += (hash << 3);
  hash ^= (hash >> 11);
  hash += (hash << 15);

dbrockman

function cachedAsyncFn(fn) {
  var cached, queue;
  return function (callback) {
    if (cached) {
      process.nextTick(function () {
        callback.apply(null, cached);
      });
    } else if (queue) {
      queue.push(callback);
    } else {

dbrockman

function fibonacci(n) {
  return n < 2 ? n : fibonacci(n - 2) + fibonacci(n - 1);
}

function fibonacci(n) {
  var prev, curr = 0, next = 1;
  while (n-- > 0) {
    prev = curr;
    curr = next;
    next = prev + curr;

dbrockman

/**
 * Converts degrees to radians.
 * @param {number} angleDegrees Angle in degrees.
 * @return {number} Angle in radians.
**/
function degreesToRadians(angleDegrees) {
  return angleDegrees * Math.PI / 180;
}

/**

dbrockman

// Fisher-Yates shuffle
function shuffle(array) {
	for (var n = array.length, k, x; 1 < n;) {
		k = Math.floor(Math.random() * n--);
		x = array[n];
		array[n] = array[k];
		array[k] = x;
	}
}

dbrockman

// Takes a number and clamps it to within the provided bounds.
#define Clamp(_num, _min, _max) MIN((_max), MAX((_min), (_num)))

// Check if the two floats are equal.
#define FloatEqual(A, B) (ABS((A) - (B)) < FLT_EPSILON)

// Check if the two floats are NOT equal.
#define FloatNotEqual(A, B) (ABS((A) - (B)) > FLT_EPSILON)

// Check if the float is equal to zero.

dbrockman

// high-resolution time diff in milliseconds
function hrmstime(t) {
    if (t) {
        t = process.hrtime(t);
        return (t[0] * 1e9 + t[1]) / 1e6;
    }
    return process.hrtime();
}