swift-language

Apply modern Swift language patterns to non-concurrency Swift code.

Updated Apr 30, 2026
One-click install
npx skills add https://github.com/onymchat/onym-ios --skill swift-language-onymchat
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: swift-language
Source: https://github.com/onymchat/onym-ios/tree/main/.claude/skills/swift-language
Command: npx skills add https://github.com/onymchat/onym-ios --skill swift-language-onymchat

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Swift code often lags behind language evolution, resulting in verbose, error-prone implementations. This Skill consolidates modern Swift patterns to improve readability, safety, and expressiveness in core code paths.

Core Features & Use Cases

  • If/Switch expressions, Typed throws, Result builders, Property wrappers, Opaque and Existential types
  • Guard patterns, Never type, Regex builders, Codable best practices, Modern collection APIs
  • FormatStyle and string interpolation patterns
  • Use cases include writing generic, protocol-based, or closure-heavy code without concurrency concerns.

Quick Start

Try applying these patterns to a small non-concurrency Swift module to observe safer, clearer code.

Frequently Asked Questions about swift-language

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I use modern Swift patterns like result builders and property wrappers in non-concurrency code?

Modern Swift patterns like result builders and property wrappers can be applied directly to non-concurrency code to improve readability and safety. This Skill prescribes specific usage guidelines for these constructs, ensuring safer and clearer code paths.

What's the best way to implement Codable best practices and Regex builders in Swift?

Codable best practices and Regex builders in Swift are best implemented by following prescribed language constructs and type system features. This Skill provides specific guidelines for handling Codable, formatting, and building Regex patterns within core Swift modules.

Does this Swift language Skill cover typed throws and guard patterns for generic code?

Yes, this Swift language Skill covers typed throws and guard patterns. It is designed for writing generic, protocol-based, or closure-heavy code without concurrency concerns, ensuring improved expressiveness and safety.

How do if/switch expressions and FormatStyle work in modern Swift?

If/switch expressions and FormatStyle work in modern Swift by applying modern language patterns to non-concurrency code. This Skill provides usage guidelines for these language constructs, alongside string interpolation patterns, to improve code expressiveness.

When should I use opaque and existential types in Swift non-concurrency modules?

Opaque and existential types should be used in Swift non-concurrency modules to improve type safety and readability. This Skill consolidates modern Swift patterns, prescribing usage guidelines for type system features within core code paths.

Can I use modern collection APIs and the Never type in Swift without async concurrency?

Yes, you can use modern collection APIs and the Never type in Swift without async concurrency. This Skill focuses exclusively on non-concurrency Swift code, covering these modern collection APIs and type system features for safer, clearer implementations.