OCP Vibe Coding Example

📖 Full English article available here: ARTICLE.md

Built the 2nd floor by hand, then let GPT expand it into a 6-floor building — OCP vibe coding in action. 🏗️✨

Overview

This repository demonstrates an experimental style of "vibe coding":
a human developer sets up the foundation using the Open/Closed Principle (OCP), and a generative AI assistant extends it further while keeping the design open for extension and closed for modification.

The project evolves from a minimal time unit system (seconds and minutes) into a full Gregorian calendar representation including:

• Seconds

• Minutes

• Hours

• Days (with leap year support)

• Months

• Years (0001–9999, clamped)

Key Ideas

• OCP in practice – each time unit is an independent class, open to extension by chaining to the next unit.

• Human + AI collaboration – initial 2 levels (Seconds, Minutes) were written manually, while higher units (Hours → Years) were generated and refined through AI guidance.

• Composable architecture – Increment() cascades through units, and AsString() builds a readable YYYY-MM-DD HH:mm:ss output.

Example Output

0001-01-01 00:00:00
0001-01-01 00:00:01
...
2025-08-16 14:07:59

Requires To Build and Run

Requires .NET 8.0 or later.

Why "Vibe Coding"?

Because the process wasn’t a strict spec-driven implementation.
It was more like “set the vibe, let AI riff on it, then polish together”.
Think of it as pair-programming with a generative AI, where OCP provides the safety rails.

License

This project is licensed under the MIT License.
Note: Parts of the code were generated with the assistance of OpenAI’s GPT model, and then reviewed/modified by a human developer.
You are free to use, modify, and distribute this project under the terms of the MIT License.