---
title: MLDataTable.PackType
framework: createml
role: symbol
role_heading: Enumeration
path: createml/mldatatable/packtype
---

# MLDataTable.PackType

The storage operations for combining multiple columns into one.

## Declaration

```swift
enum PackType
```

## Topics

### Selecting a packing operation

- [MLDataTable.PackType.sequence](createml/mldatatable/packtype/sequence.md)
- [MLDataTable.PackType.dictionary](createml/mldatatable/packtype/dictionary.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Compacting columns

- [pack(columnsNamed:to:type:filling:)](createml/mldatatable/pack(columnsnamed:to:type:filling:).md)