# Singleton Pattern

## Description
Ensure a class has only one instance and provide a global point of access to it.

## Use Cases
Load this skill when you need to solve design problems described by this pattern in your code.

## Guidelines
1. Analyze whether current code structure matches the pattern's intent.
2. Refactor or implement following the pattern's typical structure.
3. Ensure the pattern introduction reduces coupling or improves flexibility.

## Detailed Reference
For more details, diagrams, and code examples: [Singleton Pattern - RefactoringGuru](https://refactoringguru.cn/design-patterns/singleton)