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Set expression operators perform operations on sets and arrays treated as sets.
| Description | |
|---|---|
$allElementsTrue |
The $allElementsTrue operator returns true if all elements in an array evaluate to true. |
$anyElementTrue |
The $anyElementTrue operator returns true if any element in an array evaluates to a value of true. |
$setDifference |
The $setDifference operator returns a set with elements that exist in one set but not in a second set. |
$setEquals |
The $setEquals operator returns true if two sets have the same distinct elements. |
$setIntersection |
The $setIntersection operator returns the common elements that appear in all input arrays. |
$setIsSubset |
The $setIsSubset operator determines if one array is a subset of a second array. |
$setUnion |
The $setUnion operator returns an array that contains all the unique elements from the input arrays. |