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Questions and Answers
What does the logical OR (||) operator return if x can be converted to true?
What does the logical OR (||) operator return if x can be converted to true?
- true
- y
- x (correct)
- false
How can the return value of the logical OR operator be explicitly converted to a boolean value?
How can the return value of the logical OR operator be explicitly converted to a boolean value?
- Using the double NOT operator (correct)
- Using the XOR operator
- Using the NOT operator
- Using the double AND operator
What does MongoDB do when evaluating the clauses in the $or expression?
What does MongoDB do when evaluating the clauses in the $or expression?
- Always uses indexes if supported
- Performs a collection scan or uses indexes if supported (correct)
- Performs a collection scan regardless of indexes
- Always performs a collection scan
What kind of values are considered falsy in JavaScript?
What kind of values are considered falsy in JavaScript?
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How is a truthy value defined in JavaScript?
How is a truthy value defined in JavaScript?
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