# init(_:) Creates a new column from a given sequence of elements that can be converted to machine learning data values. ``` init(_ source: S) where S : Sequence, S.Element : MLDataValueConvertible ``` ## Parameters `source` A sequence of convertible elements for the new column. ## Discussion Use this initializer to create a column from a sequence of any type that conforms to [`MLDataValueConvertible`](/documentation/CreateML/MLDataValueConvertible). ```swift let sequenceColumn = MLUntypedColumn([2, 3, 5, 7, 11]) print(sequenceColumn) /* Prints... ValueType: Int Values: [2, 3, 5, 7, 11] */ ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)