Question 1

How do I use sharplet/Regex for pattern matching in Swift switch statements?

Accepted Answer

You can directly embed Regex instances in switch cases, like 'case Regex("hello (world|universe)"):' to match patterns expressively, leveraging Swift's control flow for cleaner code.

Question 2

Is sharplet/Regex better than Apple's NSRegularExpression?

Accepted Answer

Sharplet/Regex offers a more Swift-friendly API with type safety and pattern matching integration, while NSRegularExpression is lower-level and verboser. Choose based on whether you prefer native Swift syntax over Foundation's raw API.

Question 3

Can I decode regex patterns from JSON with this library?

Accepted Answer

Yes, Regex supports Codable, allowing you to encode and decode regex patterns directly to and from JSON, as demonstrated in the decode example, which is useful for configuration-driven applications.

Question 4

How to handle errors when building regex from user input?

Accepted Answer

Use the 'try Regex(string:)' initializer for dynamic patterns, which throws errors for invalid regex syntax. Wrap it in a do-catch block to gracefully handle failures, as shown in the usage section.

Question 5

Does sharplet/Regex support lookahead and lookbehind assertions?

Accepted Answer

The README doesn't explicitly mention lookahead/lookbehind support; it builds on Swift's regex engine, so advanced features might be limited. Check the underlying implementation or test for specific needs.

Question 6

How to install sharplet/Regex with CocoaPods?

Accepted Answer

Add 'pod "STRegex", "~> 2.1"' to your Podfile, as specified in the installation section. Ensure your project is set up for CocoaPods, then run 'pod install' to integrate the library.

Regex

What is Regex?

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