dart-modern-patterns SKILL.md skillA
dart-modern-patterns from smicolon/ai-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add smicolon/ai-kit/dart-modern-patterns@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- smicolon/ai-kit
- Path
packs/flutter/skills/dart-modern-patterns/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Sep 3, 2026
- Size
- 2,082 bytes
- Repository stars
- 7
- License
- MIT
Leverages modern Dart 3+ language features including pattern matching, switch expressions, records, and sealed class hierarchies for expressive, type-safe Flutter code.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Modern Dart 3+ Patterns
Idiomatic Dart 3 features to write concise, safe, and expressive Flutter code.
## 1. Records (Anonymous Typed Tuples)
Return multiple values without creating boilerplate data classes:
```dart
// Function returning a Record with positional and named fields
(String name, int age, {bool isActive}) getUserSummary() {
return ('Alice', 30, isActive: true);
}
// Destructuring records
final (name, age, isActive: active) = getUserSummary();
```
---
## 2. Pattern Matching & Switch Expressions
Use switch expressions for exhaustive state mapping in UI:
```dart
// Switch expression returning a Widget directly
Widget buildStateWidget(AsyncValue<UserData> state) {
return switch (state) {
AsyncData(:final value) => UserProfileView(user: value),
AsyncError(:final error) => ErrorBanner(message: error.toString()),
AsyncLoading() => const CircularProgressIndicator(),
};
}
```
### Relational & Logical Patterns
```dart
String getDiscountLabel(int points) => switch (points) {
>= 1000 => 'VIP (30% off)',
>= 500 && < 1000 => 'Gold (20% off)',
> 0 => 'Standard (10% off)',
_ => 'No discount',
};
```
---
…Read the whole file at its exact version.
How to install
mdr add smicolon/ai-kit/dart-modern-patterns@sha256:b0f27cca74e19476The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_o6ovw7w6dyzic6mr)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 3, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2082 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
smicolon/ai-kit · 7 stars · license MIT · pushed 2026-09-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_o6ovw7w6dyzic6mr GET https://markdownregistry.com/api/v1/resolve?ref=smicolon/ai-kit/dart-modern-patterns GET https://markdownregistry.com/api/v1/blob/b0f27cca74e19476a7ce5e47c6cf4cd006e223a7a9abfaf92b2b64bf7c1fcbfb
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.