Explanation:The $map expression has the following syntax: { $map: { input: , as: , in: } }. 7. Which of the following accepts named parameters ?
A. $reduce
B. $letnum
C. $let
D. None of the mentioned
Answer:A
Explanation:The $map expression has the following syntax: { $map: { input: , as: , in: } }. 7. Which of the following accepts named parameters ?
A. $reduce B. $letnum C. $let D. None of the mentioned
Explanation:$let defines variables for use within the scope of a subexpression and returns the result of the subexpression. 8. String expressions, with the exception of ________, only have a well-defined behavior for strings of ASCII characters.