Explanation:The Boolean expression evaluates all other values as true, including non-zero numeric values and arrays. 6. ________ applies an expression to each item in an array and returns an array with the applied results.
A. $map
B. $geo
C. $geoRear
D. None of the mentioned
Answer:A
Explanation:The Boolean expression evaluates all other values as true, including non-zero numeric values and arrays. 6. ________ applies an expression to each item in an array and returns an array with the applied results.
A. $map B. $geo C. $geoRear D. None of the mentioned
Explanation:The $map expression has the following syntax: { $map: { input: , as: , in: } }. 7. Which of the following accepts named parameters ?