query: Why is isNaN() is undefined?
positive_passages.docid: 62777
positive_passages.text: What's the difference between JavaScript and Java?
negative_passages.docid: 5377
negative_passages.text: Is there a standard function to check for null, undefined, or blank variables in JavaScript?
negative_passages.docid: 109443
negative_passages.text: Compare integer in bash, unary operator expected
negative_passages.docid: 83782
negative_passages.text: How to check a not-defined variable in JavaScript
negative_passages.docid: 142576
negative_passages.text: Why does [1].append(2) evaluate to None instead of [1,2]?
negative_passages.docid: 142701
negative_passages.text: Why “which” returns none on some commands I can run?
negative_passages.docid: 148621
negative_passages.text: Numpy - Replace a number with NaN
negative_passages.docid: 82575
negative_passages.text: How do I get Mathematica to return a function call unevaluated?
negative_passages.docid: 63438
negative_passages.text: Can the :not() pseudo-class have multiple arguments?
negative_passages.docid: 3951
negative_passages.text: Validate decimal numbers in JavaScript - IsNumeric()
negative_passages.docid: 101361
negative_passages.text: Why does local fn=$(...) mask the $? status code
negative_passages.docid: 4419
negative_passages.text: "is" operator behaves unexpectedly with integers
negative_passages.docid: 138830
negative_passages.text: What does `invalid initialization of non-const reference` mean?
negative_passages.docid: 19240
negative_passages.text: My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(()); solve it?
negative_passages.docid: 119201
negative_passages.text: Why am I getting undefined is not a function when using jquery?
negative_passages.docid: 124865
negative_passages.text: Why do I get AttributeError: 'NoneType' object has no attribute 'something'?
negative_passages.docid: 83890
negative_passages.text: Uninitialized values being initialized?