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# MLSequenceConstraint

The constraints for a sequence feature.

```
class MLSequenceConstraint
```

## Topics

### Accessing the constraints

[`valueDescription`](/documentation/CoreML/MLSequenceConstraint/valueDescription)

The description that all sequence elements must match.

[`countRange`](/documentation/CoreML/MLSequenceConstraint/countRange)

The range of values allowed for the sequence’s length.


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