Type Property
regularExpression
iOS 8.0+
iPadOS 8.0+
Mac Catalyst 8.0+
macOS 10.10+
tvOS 9.0+
watchOS 2.0+
The search string is treated as an ICU-compatible regular expression; if set, no other options can apply except
.caseInsensitive and .anchoredstatic let regularExpression: String.CompareOptions