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- Array Aggregation Operators
Array Aggregation OperatorsΒΆ
Name | Description |
---|---|
$arrayElemAt | Returns the element at the specified array index. |
$concatArrays | Concatenates arrays to return the concatenated array. |
$filter | Selects a subset of the array to return an array with only the elements that match the filter condition. |
$isArray | Determines if the operand is an array. Returns a boolean. |
$size | Returns the number of elements in the array. Accepts a single expression as argument. |
$slice | Returns a subset of an array. |
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