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Change default size of _.chunk to 0.

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John-David Dalton
2015-07-28 13:49:55 -07:00
parent 48a6c4f2bf
commit 5fb732c0e6
2 changed files with 11 additions and 18 deletions
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20
lodash.js
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@@ -4187,8 +4187,7 @@
* @memberOf _
* @category Array
* @param {Array} array The array to process.
* @param {number} [size=1] The length of each chunk.
* @param- {Object} [guard] Enables use as an iteratee for functions like `_.map`.
* @param {number} [size=0] The length of each chunk.
* @returns {Array} Returns the new array containing chunks.
* @example
*
@@ -4198,11 +4197,10 @@
* _.chunk(['a', 'b', 'c', 'd'], 3);
* // => [['a', 'b', 'c'], ['d']]
*/
function chunk(array, size, guard) {
if (guard ? isIterateeCall(array, size, guard) : size == null) {
size = 1;
} else {
size = nativeMax(nativeFloor(size) || 1, 1);
function chunk(array, size) {
size = nativeMax(nativeFloor(size) || 0, 0);
if (size < 1) {
return [];
}
var index = 0,
length = array ? array.length : 0,
@@ -6146,10 +6144,10 @@
* `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
*
* The guarded methods are:
* `ary`, `callback`, `chunk`, `create`, `curry`, `curryRight`, `drop`,
* `dropRight`, `every`, `fill`, `invert`, `parseInt`, `random`, `range`,
* `sample`, `slice`, `some`, `sortBy`, `sumBy`, `take`, `takeRight`,
* `template`, `trim`, `trimLeft`, `trimRight`, `trunc`, `uniqBy`, and `words`
* `ary`, `callback`, `create`, `curry`, `curryRight`, `drop`, `dropRight`,
* `every`, `fill`, `invert`, `parseInt`, `random`, `range`, `sample`,
* `slice`, `some`, `sortBy`, `sumBy`, `take`, `takeRight`, `template`,
* `trim`, `trimLeft`, `trimRight`, `trunc`, `uniqBy`, and `words`
*
* @static
* @memberOf _

9
test/test.js
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@@ -1794,9 +1794,9 @@
deepEqual(actual, [[0, 1, 2, 3], [4, 5]]);
});
test('should ensure the minimum `chunkSize` is `1`', 1, function() {
test('should ensure the minimum `size` is `0`', 1, function() {
var values = falsey.concat(-1, -Infinity),
expected = _.map(values, _.constant([[0], [1], [2], [3], [4], [5]]));
expected = _.map(values, _.constant([]));
var actual = _.map(values, function(value, index) {
return index ? _.chunk(array, value) : _.chunk(array);
@@ -1808,11 +1808,6 @@
test('should floor `size` values', 1, function() {
deepEqual(_.chunk(array, array.length / 4), [[0], [1], [2], [3], [4], [5]]);
});
test('should work as an iteratee for methods like `_.map`', 1, function() {
var actual = _.map([[1, 2], [3, 4]], _.chunk);
deepEqual(actual, [[[1], [2]], [[3], [4]]]);
});
}());
/*--------------------------------------------------------------------------*/