$isNumber
Reference group: Conversion and type inspection
What it does
Returns true for numeric BSON types.
Syntax
{$isNumber: expression}
Use case
Separate numeric values from malformed imports.
$isNumber: practical example
{ $match: { $expr: { $isNumber: "$price" } } }💡 Explanation
Returns true for numeric BSON types.
When to use it
Separate numeric values from malformed imports.
Key Takeaways
- Returns true for numeric BSON types.
- Typical use: Separate numeric values from malformed imports.