# add(classifications:groundTruth:) Updates the metrics with more classifications and ground truth labels. ``` mutating func add(classifications: some Sequence>, groundTruth: some Sequence>) ``` ## Parameters `classifications` A collection of classifications. `groundTruth` A collection of true labels. ## Discussion The classifications 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)