# add(predicted:groundTruth:) Updates the metrics with more predicted and ground truth labels. ``` mutating func add(predicted: some Sequence, groundTruth: some Sequence) ``` ## Parameters `predicted` The predicted labels. `groundTruth` The true labels. ## Discussion The predicted and ground truth sequences are matched element by element in the order they are provided. Both sequences must have the same number of elements. --- 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)