Design Pattern

Creational
Structural
- Adapter
- Bridge
- Composite
- Decorator
- Facade
- Flyweight
- Private Class Data
- Proxy
Behavioral
- Chain of Responsibility
- Command
- Interpreter
- Iterator
- Mediator
- Memento
- Null Object
- Observer
- State
- Strategy
- Template Method
- Visitor

Creational

Abstract Factory

Builder

Rust 對於 Builder Pattern 的支援可以直接使用第三方的 Builder Pattern Derive 。

安裝：

$ cargo add derive_builder

使用：

#[macro_use]
extern crate derive_builder;

#[derive(Default, Builder, Debug)]
struct Channel {
    token: i32,
    special_info: i32,
    // .. a whole bunch of other fields ..
}

fn main() {
    // builder pattern
    let ch = ChannelBuilder::default()
                            .special_info(42u8)
                            .token(19124)
                            .build()
                            .unwrap();
    println!("{:?}", ch);
}