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51812
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What is the reason that an empty string evaluates to false in Javascript
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How do I initialize a dictionary of empty lists in Python?
80984
How do I check if an HTML element is empty using jQuery?
112728
What's the best way to get the last element of an array without deleting it?
89873
PHP: a short cut for isset and !empty?
66620
How do I get the number of elements in a list?
120478
How to check for empty array in vba macro
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How to check if a macro value is empty or will not create text with plain TeX conditionals?
37735
How can I check for "undefined" in JavaScript?
106570
Testing for an empty array object in JSON with jQuery
158160
SimpleXmlElement and XPath, getting empty array()
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Python: Checking if a 'Dictionary' is empty doesn't seem to work
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How can I check for an empty/undefined/null string in JavaScript?
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How to add new elements to an array?
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Why is there a `null` value in JavaScript?