time-to-botec

Benchmark sampling in different programming languages
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_baseWhile.js (933B)

      1 var baseSlice = require('./_baseSlice');
      2 
      3 /**
      4  * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
      5  * without support for iteratee shorthands.
      6  *
      7  * @private
      8  * @param {Array} array The array to query.
      9  * @param {Function} predicate The function invoked per iteration.
     10  * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
     11  * @param {boolean} [fromRight] Specify iterating from right to left.
     12  * @returns {Array} Returns the slice of `array`.
     13  */
     14 function baseWhile(array, predicate, isDrop, fromRight) {
     15   var length = array.length,
     16       index = fromRight ? length : -1;
     17 
     18   while ((fromRight ? index-- : ++index < length) &&
     19     predicate(array[index], index, array)) {}
     20 
     21   return isDrop
     22     ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
     23     : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
     24 }
     25 
     26 module.exports = baseWhile;