init(_:as:)

Declaration

init?(_ regex: Regex<AnyRegexOutput>, as outputType: Output.Type = Output.self)

Parameters

• regex:

  A regular expression to convert to use a strongly-typed capture list.

• outputType:

  The capture structure to use.

Discussion

You can use this initializer to convert a regular expression with a dynamic capture list to one with a strongly-typed capture list. If the type you provide as outputType doesn’t match the capture structure of regex, the initializer returns nil.

let dynamicRegex = try Regex("(.+?): (.+)")
if let stronglyTypedRegex = Regex(dynamicRegex, as: (Substring, Substring, Substring).self) {
    print("Converted properly")
}
// Prints "Converted properly"