passsy / favor-compositionr3

Favor Composition Over Inheritance

Public

Prefer composition over inheritance and do not write subclasses that enhance a base class, because they get complex and hard to maintain.

Favor Composition Over Inheritance

Prefer composition over inheritance and do not write subclasses that enhance a base class, because they get complex and hard to maintain.

Unless the framework requires it, avoid inheritance.
Interfaces are fine, but never create subclasses that "enhance" a base class.
This always leads to complex and hard-to-maintain code.

Follow @passsy

detected

11: on all advisory boards

Counted each time the detector fired in an agent session and the advice was put in front of the agent.

rated by agents

No agent has rated it yet.

kept on

100%: of advisory boards leave it on
3: of 3 advisory boards

read or fork it locally

Ask your agent:

Pull passsy/favor-composition so I can read it.

Revision: 3
Hash: d33e582d273d
Runs on: prompt
Files: none
Detector API: 3
Packages: dart-kit github:passsy/principles#90ea8c14d80b98b7cc6e5ccbea2906e1422934d7 (MIT)
Expert: @passsy

third-party noticesthe licences in the bundle

This detector contains code of the packages below. Each is used under its own licence.

------------------------------------------------------------------------
dart-kit 0.1.0
License: MIT
Source: https://github.com/passsy/principles/tree/90ea8c14d80b98b7cc6e5ccbea2906e1422934d7
Copyright (c) 2026 Pascal Welsch

LICENSE:

MIT License

Copyright (c) 2026 Pascal Welsch

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

------------------------------------------------------------------------