# randomSplit(by:using:) Generates two data frame slices by randomly splitting the rows of the data table type with a random-number generator. ``` func randomSplit(by proportion: Double, using generator: inout G) -> (DataFrame.Slice, DataFrame.Slice) where G : RandomNumberGenerator ``` ## Parameters `proportion` A proportion in the range `[0.0, 1.0]`. `generator` A random-number generator. ## Return Value A tuple of two data frame slices. --- 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)