RegularExpression

A Swifty overlay of NSRegularExpression.

Conforms to ExpressibleByStringLiteral and Codable, and supports pattern matching.

Most methods are similar to the Objective-C versions, with the following changes:

• Custom Match type for matches.
• Passing nil for a range parameter will use the whole string.
• Ranges for invalid/missing ranges will be nil instead of {NSNotFound, 0}.

Match type is subscriptable by Int (for numbered capture groups) or by String (for named capture groups), returning the substring with the match text (vs. the range methods).

I'd like to provide a "for … in" interface, but emulating that through the available API is about 2x slower than just returning all the results as an array. Maybe someday Apple will make the system-installed ICU headers public.

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© 2020 Nate Weaver