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Clarify _.isEmpty and add tests for array-like objects for _.isEmpty and _.size.

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John-David Dalton
2014-03-16 14:47:31 -07:00
parent 23d935d7ec
commit 94381bd899
2 changed files with 63 additions and 32 deletions
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14
lodash.js
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@@ -6081,9 +6081,9 @@
}
/**
* Checks if `value` is empty. Arrays, strings, or `arguments` objects with a
* length of `0` and objects with no own enumerable properties are considered
* "empty".
* Checks if a collection is empty. A value is considered empty unless it is
* an array, array-like object, or string with a length greater than `0` or
* an object with own properties.
*
* @static
* @memberOf _
@@ -6115,9 +6115,11 @@
var className = toString.call(value),
length = value.length;
if ((className == arrayClass || className == stringClass ||
(support.argsClass ? className == argsClass : isArguments(value))) ||
(className == objectClass && typeof length == 'number' && isFunction(value.splice))) {
if (length > -1 && length <= maxSafeInteger && (
(className == arrayClass || className == stringClass ||
(support.argsClass ? className == argsClass : isArguments(value))) ||
(className == objectClass && isFunction(value.splice))
)) {
return !length;
}
baseForOwn(value, function() {