$slice
Reference group: Array aggregation expressions
What it does
Returns an array subset.
Syntax
{$slice: [array, n]} or {$slice: [array, position, n]}
Use case
Create compact previews.
$slice: practical example
{ $project: { firstThree: { $slice: ["$events", 3] } } }💡 Explanation
Returns an array subset.
When to use it
Create compact previews.
Key Takeaways
- Returns an array subset.
- Typical use: Create compact previews.