Rusty Design Pattern Implementation Samples

Implemented Design Patterns

• Adapter Pattern
• Builder Pattern
• Command Pattern
• Composite Pattern
• Decorator Pattern
• Factory Pattern
• Iterator Pattern
• Observer Pattern
• Strategy Pattern
• State Pattern
• Template Method Pattern

Update 2021/8/4

Now the book and Rust have changed a lot in the past 2 years, some patterns may have cleaner implementations, but still technical components used in this repo are stainlessly useful.

Note

Though these codes are simple, I think it's a good way to get familiar with Rust, especially some tricks and features only belonged to Rust, like lifetime with references.

Reference

Most but not all of the examples are from the book Head First Design Pattern which is reallllly juicy and worth reading.

Some other sources are referred in code comments.

Documentation

Please run cargo doc --open in the root of this directory to see the auto-generated fancy documentation.

Recommended Environment

Jetbrains' IDEs + Rust plugin by Jetbrains

For you can see the static type inference of Rust, which is really helpful

Run

In each sub mod of lib.rs, there is a test mod. You can run the test mod to compile and run codes of specific patterns without bothering running main() and compiling all codes.

TODO

• Implement more patterns
• Implement the tests of State Pattern

Tough Ones

• Singleton
  • The crate lazy-static helps in main.rs and it works, but it seems that this dose not work in other mods.
  • Singleton is discouraged by the community for its global accessibility