Builder defines how to assemble a car.

Declares a method for executing (and undoing) a command. Each command receives an application context to access visual components (e.g. edit view) an

A single role of objects that make up a chain. A typical trait implementation must have `handle` and `next` methods, while `execute` is implemented by

`Deserializer` trait defines methods that can parse either a string or a vector, it accepts a visitor which knows how to construct a new object of a d

Dialog has a factory method `create_button`. It creates different buttons depending on a factory implementation.

Director knows how to build a car. However, a builder can build a car manual instead of an actual car, everything depends on the concrete builder.

Abstract Factory defined using generics.

Abstract Factory defined using Box pointer.

Maze game has a factory method producing different rooms.

Mediator has notification methods.

NGINX server is a proxy to an application server.

A music player holds a playlist and it can do basic operations over it.

Application context: a music player and a state.

Maze room that is going to be instantiated with a factory method.

Defines an injectable strategy for building routes.

There is a base `State` trait with methods `play` and `stop` which make state transitions. There are also `next` and `prev` methods in a separate `imp

Converts adaptee's specific interface to a compatible `Target` output.

A music track.

A train gets a mediator object by reference.