githubmirror/lodash

_baseRange.js

31 строка919 B

John-David Dalton

Bump to v4.14.0.

24 июл 2016, 19:52

24 июл 2016, 19:52edb45df

define([], function() {

  /* Built-in method references for those with the same name as other `lodash` methods. */
  var nativeCeil = Math.ceil,
      nativeMax = Math.max;

  /**
   * The base implementation of `_.range` and `_.rangeRight` which doesn't
   * coerce arguments.
   *
   * @private
   * @param {number} start The start of the range.
   * @param {number} end The end of the range.
   * @param {number} step The value to increment or decrement by.
   * @param {boolean} [fromRight] Specify iterating from right to left.
   * @returns {Array} Returns the range of numbers.
   */
  function baseRange(start, end, step, fromRight) {
    var index = -1,
        length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
        result = Array(length);

    while (length--) {
      result[fromRight ? length : ++index] = start;
      start += step;
    }
    return result;
  }

  return baseRange;
});