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$allElementsTrue returns true if no element of a set evaluates to ____________

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$allElementsTrue returns true if no element of a set evaluates to ____________

(a) false

(b) true

(c) 0

(d) 1

The question was posed to me by my school teacher while I was bunking the class.

My enquiry is from Pipeline Optimization in section Aggregation Concepts and Aggregation Mechanics of MongoDB

1 Answer

+1 vote
by (652k points)
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Best answer
Correct answer is (a) false

Explanation: An empty array returns true.

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