dart-use-pattern-matching

Apply Dart pattern matching to destructure data and control flow.

428|29|Updated Feb 25, 2026
One-click install
npx skills add https://github.com/dart-lang/skills --skill dart-use-pattern-matching
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: dart-use-pattern-matching
Source: https://github.com/dart-lang/skills/tree/main/skills/dart-use-pattern-matching
Command: npx skills add https://github.com/dart-lang/skills --skill dart-use-pattern-matching

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Pattern matching in Dart helps reduce boilerplate, improve readability, and catch mismatches early by destructuring data and controlling flow with concise switch constructs.

Core Features & Use Cases

  • Supports Map, List, Record, and Object patterns to destructure data and drive logic.
  • Versatile switch expressions and statements for exhaustive handling of sealed classes and runtime variants.
  • Real-world guidance for refactoring code to use pattern matching safely and effectively.

Quick Start

Use pattern matching to refactor the Point class switch to a concise expression.

Frequently Asked Questions about dart-use-pattern-matching

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

FAQPage Schema
How do I use pattern matching in Dart to destructure JSON-like maps and lists?

Pattern matching in Dart destructures JSON-like maps and lists by applying Map and List patterns to extract values directly within switch expressions. This drives concise logic control and reduces boilerplate when validating complex data structures.

What is the best way to write exhaustive switch logic for sealed classes in Dart?

The best way to write exhaustive switch logic for sealed classes in Dart is using switch expressions with pattern matching. Exhaustiveness checks ensure all runtime variants are handled, catching missing cases early and improving maintainability.

Can I refactor Dart control-flow statements to use switch expressions with relational and wildcard patterns?

Yes, you can refactor Dart control-flow statements into switch expressions using relational and wildcard patterns. This replaces verbose if-else chains with concise, readable expressions that bind variables and evaluate conditions safely.

Does Dart pattern matching work with Record and Object patterns for data destructuring?

Dart pattern matching works with Record and Object patterns to destructure data into individual variables. This allows direct extraction of object fields and record components within switch constructs for cleaner, safer code.

Why does Dart pattern matching help catch data mismatches early during code refactoring?

Dart pattern matching catches data mismatches early through exhaustive checks and type-safe destructuring during code refactoring. The compiler enforces that all possible variants of sealed classes and data shapes are explicitly handled.