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Split out _.sortedIndex and _.sortedLastIndex into _.sortedIndexBy and _.sortedLastIndexBy.

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jdalton
2015-07-06 08:11:19 -07:00
committed by John-David Dalton
parent bc7cabde4e
commit 41f248f54d
2 changed files with 94 additions and 53 deletions
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82
lodash.src.js
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@@ -5044,10 +5044,30 @@
/**
* Uses a binary search to determine the lowest index at which `value` should
* be inserted into `array` in order to maintain its sort order. If an iteratee
* function is provided it's invoked for `value` and each element of `array`
* to compute their sort ranking. The iteratee is invoked with one argument:
* (value).
* be inserted into `array` in order to maintain its sort order.
*
* @static
* @memberOf _
* @category Array
* @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate.
* @returns {number} Returns the index at which `value` should be inserted into `array`.
* @example
*
* _.sortedIndex([30, 50], 40);
* // => 1
*
* _.sortedIndex([4, 5], 4);
* // => 0
*/
function sortedIndex(array, value) {
return binaryIndex(array, value);
}
/**
* This method is like `_.sortedIndex` except that it accepts an iteratee
* which is invoked for `value` and each element of `array` to compute their
* sort ranking. The iteratee is invoked with one argument: (value).
*
* @static
* @memberOf _
@@ -5058,27 +5078,17 @@
* @returns {number} Returns the index at which `value` should be inserted into `array`.
* @example
*
* _.sortedIndex([30, 50], 40);
* // => 1
*
* _.sortedIndex([4, 4, 5, 5], 5);
* // => 2
*
* var dict = { 'thirty': 30, 'forty': 40, 'fifty': 50 };
*
* // using an iteratee function
* _.sortedIndex(['thirty', 'fifty'], 'forty', _.propertyOf(dict));
* _.sortedIndexBy(['thirty', 'fifty'], 'forty', _.propertyOf(dict));
* // => 1
*
* // using the `_.property` callback shorthand
* _.sortedIndex([{ 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x');
* // => 1
* _.sortedIndexBy([{ 'x': 4 }, { 'x': 5 }], { 'x': 4 }, 'x');
* // => 0
*/
function sortedIndex(array, value, iteratee) {
var toIteratee = getIteratee();
return (iteratee == null && toIteratee === baseIteratee)
? binaryIndex(array, value)
: binaryIndexBy(array, value, toIteratee(iteratee));
function sortedIndexBy(array, value, iteratee) {
return binaryIndexBy(array, value, getIteratee(iteratee));
}
/**
@@ -5091,18 +5101,36 @@
* @category Array
* @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate.
* @returns {number} Returns the index at which `value` should be inserted into `array`.
* @example
*
* _.sortedLastIndex([4, 5], 4);
* // => 1
*/
function sortedLastIndex(array, value) {
return binaryIndex(array, value, true);
}
/**
* This method is like `_.sortedLastIndex` except that it accepts an iteratee
* which is invoked for `value` and each element of `array` to compute their
* sort ranking. The iteratee is invoked with one argument: (value).
*
* @static
* @memberOf _
* @category Array
* @param {Array} array The sorted array to inspect.
* @param {*} value The value to evaluate.
* @param {Function|Object|string} [iteratee=_.identity] The function invoked per iteration.
* @returns {number} Returns the index at which `value` should be inserted into `array`.
* @example
*
* _.sortedLastIndex([4, 4, 5, 5], 5);
* // => 4
* // using the `_.property` callback shorthand
* _.sortedLastIndexBy([{ 'x': 4 }, { 'x': 5 }], { 'x': 4 }, 'x');
* // => 1
*/
function sortedLastIndex(array, value, iteratee) {
var toIteratee = getIteratee();
return (iteratee == null && toIteratee === baseIteratee)
? binaryIndex(array, value, true)
: binaryIndexBy(array, value, toIteratee(iteratee), true);
function sortedLastIndexBy(array, value, iteratee) {
return binaryIndexBy(array, value, getIteratee(iteratee), true);
}
/**
@@ -11526,7 +11554,9 @@
lodash.snakeCase = snakeCase;
lodash.some = some;
lodash.sortedIndex = sortedIndex;
lodash.sortedIndexBy = sortedIndexBy;
lodash.sortedLastIndex = sortedLastIndex;
lodash.sortedLastIndexBy = sortedLastIndexBy;
lodash.startCase = startCase;
lodash.startsWith = startsWith;
lodash.sum = sum;