time-to-botec

Benchmark sampling in different programming languages
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_createRange.js (864B)

      1 var baseRange = require('./_baseRange'),
      2     isIterateeCall = require('./_isIterateeCall'),
      3     toFinite = require('./toFinite');
      4 
      5 /**
      6  * Creates a `_.range` or `_.rangeRight` function.
      7  *
      8  * @private
      9  * @param {boolean} [fromRight] Specify iterating from right to left.
     10  * @returns {Function} Returns the new range function.
     11  */
     12 function createRange(fromRight) {
     13   return function(start, end, step) {
     14     if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
     15       end = step = undefined;
     16     }
     17     // Ensure the sign of `-0` is preserved.
     18     start = toFinite(start);
     19     if (end === undefined) {
     20       end = start;
     21       start = 0;
     22     } else {
     23       end = toFinite(end);
     24     }
     25     step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
     26     return baseRange(start, end, step, fromRight);
     27   };
     28 }
     29 
     30 module.exports = createRange;