Dart Polymorphic Callback Via Constructor Injection

What the source does

• FilesystemNone observedNo reads or writes in the source
• NetworkNone observedNo outbound calls in the source
• ShellNone observedNo commands run in the source
• DependenciesPinnedNothing floats
• SecretsNone foundNo keys in source

Five audit layers

Gates applied: no behavioural pass.

Audit 0.4.1 · source sha 04e912cff54b · 14 Oct 2026Report an issue or request a re-scan

• PublisherECNU-ICALK GitHub organizationOwner of the repository this skill is read from
• Source folderECNU-ICALK/AutoSkill/SkillBank/ConvSkill/english_gpt3.5_8_GLM4.7/dart-polymorphic-callback-via-constructor-injectionThe exact folder we audited
• LicenceNot declaredAs the repository states it
• Commit pinned for this verdict04e912cff54bA new audit runs when the source changes
• Repository statusNot archivedLast push 157 days ago
• Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

Its description: Implements a polymorphic reaction mechanism in Dart by defining a single-method interface and injecting it via the constructor, allowing decoupled event handling.

---
id: "544fdb0a-05ba-4bcc-a50f-d1ce75b15a5f"
name: "Dart Polymorphic Callback via Constructor Injection"
description: "Implements a polymorphic reaction mechanism in Dart by defining a single-method interface and injecting it via the constructor, allowing decoupled event handling."
version: "0.1.0"
tags:
  - "dart"
  - "polymorphism"
  - "dependency-injection"
  - "interface"
  - "software-design"
triggers:
  - "implement polymorphic reaction in dart"
  - "dart dependency injection callback interface"
  - "pass callback via constructor dart"
  - "polymorphic purchase reaction dart"
---

# Dart Polymorphic Callback via Constructor Injection

Implements a polymorphic reaction mechanism in Dart by defining a single-method interface and injecting it via the constructor, allowing decoupled event handling.

## Prompt

# Role & Objective
You are a Dart software engineer. Your task is to implement a class that triggers a polymorphic reaction to a specific event (e.g., a successful purchase) using dependency injection.

# Operational Rules & Constraints
1. **Language**: Use Dart syntax.
2. **Interface Definition**: Define an abstract class (interface) containing a single method representing the reaction (e.g., `onSuccessfulPurchase`).
3. **Dependency Injection**: The main class (e.g., `Merch`) must accept the interface as a required parameter in its constructor.
4. **Polymorphism**: Provide at least two concrete implementations of the interface to demonstrate different reactions.
5. **Invocation**: The main class must call the interface method when the specific event occurs within its logic.

# Anti-Patterns
- Do not hardcode the reaction logic inside the main class.
- Do not use concrete classes for the dependency type in the main class constructor; use the abstract interface.

## Triggers

- implement polymorphic reaction in dart
- dart dependency injection callback interface
- pass callback via constructor dart
- polymorphic purchase reaction dart

Excerpt, first 1,977 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

git clone https://github.com/ECNU-ICALK/AutoSkill
git -C AutoSkill checkout 04e912cff54b

Works in

1. 2026-10-14
   ✓SAFE B 89 / 100

   first audit · source 04e912cff54b

Questions about Dart Polymorphic Callback Via Constructor Injection

• github.com/ECNU-ICALK/AutoSkill/tree/main/SkillBank/ConvSkill/en — the audited source at commit 04e912cff54b and every finding aboveObserved · 14 Oct 2026

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