Skip to main content

Apple Developer Docs

Swift Package Manager / SwiftPM / PackagePlugin / FileList / formIndex(before:)

formIndex(before:)

Inherited from BidirectionalCollection.formIndex(before:).

Declaration

func formIndex(before i: inout Self.Index)

Open on docs.swift.org

Swift Package ManagerInstance Method

Built on 2026-06-12 · Snapshot snapshot-20260612-beta.1 (macOS 27.0) · Commit fba13e1 · by @g-cqd · based on Apple Developer Documentation