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Add createSortedIndex.

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jdalton
2015-03-21 18:06:14 -07:00
parent 820ab8d486
commit f26886acb0
1 changed files with 20 additions and 16 deletions
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36
lodash.src.js
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@@ -2893,8 +2893,7 @@
* @private * @private
* @param {Array} array The sorted array to inspect. * @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate. * @param {*} value The value to evaluate.
* @param {boolean} [retHighest] Specify returning the highest, instead * @param {boolean} [retHighest] Specify returning the highest qualified index.
* of the lowest, index at which a value should be inserted into `array`.
* @returns {number} Returns the index at which `value` should be inserted * @returns {number} Returns the index at which `value` should be inserted
* into `array`. * into `array`.
*/ */
@@ -2927,8 +2926,7 @@
* @param {Array} array The sorted array to inspect. * @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate. * @param {*} value The value to evaluate.
* @param {Function} iteratee The function invoked per iteration. * @param {Function} iteratee The function invoked per iteration.
* @param {boolean} [retHighest] Specify returning the highest, instead * @param {boolean} [retHighest] Specify returning the highest qualified index.
* of the lowest, index at which a value should be inserted into `array`.
* @returns {number} Returns the index at which `value` should be inserted * @returns {number} Returns the index at which `value` should be inserted
* into `array`. * into `array`.
*/ */
@@ -3663,6 +3661,22 @@
return wrapper; return wrapper;
} }
/**
* Creates a `_.sortedIndex` or `_.sortedLastIndex` function.
*
* @private
* @param {boolean} [retHighest] Specify returning the highest qualified index.
* @returns {Function} Returns the new index function.
*/
function createSortedIndex(retHighest) {
return function(array, value, iteratee, thisArg) {
var func = getCallback(iteratee);
return (func === baseCallback && iteratee == null)
? binaryIndex(array, value, retHighest)
: binaryIndexBy(array, value, func(iteratee, thisArg, 1), retHighest);
};
}
/** /**
* Creates a function that either curries or invokes `func` with optional * Creates a function that either curries or invokes `func` with optional
* `this` binding and partially applied arguments. * `this` binding and partially applied arguments.
@@ -5377,12 +5391,7 @@
* _.sortedIndex([{ 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x'); * _.sortedIndex([{ 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x');
* // => 1 * // => 1
*/ */
function sortedIndex(array, value, iteratee, thisArg) { var sortedIndex = createSortedIndex();
var func = getCallback(iteratee);
return (func === baseCallback && iteratee == null)
? binaryIndex(array, value)
: binaryIndexBy(array, value, func(iteratee, thisArg, 1));
}
/** /**
* This method is like `_.sortedIndex` except that it returns the highest * This method is like `_.sortedIndex` except that it returns the highest
@@ -5404,12 +5413,7 @@
* _.sortedLastIndex([4, 4, 5, 5], 5); * _.sortedLastIndex([4, 4, 5, 5], 5);
* // => 4 * // => 4
*/ */
function sortedLastIndex(array, value, iteratee, thisArg) { var sortedLastIndex = createSortedIndex(true);
var func = getCallback(iteratee);
return (func === baseCallback && iteratee == null)
? binaryIndex(array, value, true)
: binaryIndexBy(array, value, func(iteratee, thisArg, 1), true);
}
/** /**
* Creates a slice of `array` with `n` elements taken from the beginning. * Creates a slice of `array` with `n` elements taken from the beginning.