How the State Pattern Will Improve Your Go Programs

The State Pattern is considered a Behavioural Design Pattern. Behavioural patterns seek to ensure that objects may still exchange messages and at the same time be loosely coupled. This is enforced by proper assignment of responsibilities between objects. In case of the State Pattern this is implemented by letting an object alter behaviour when its internal state changes — sometimes to such an extend that it may look like the object has changed its class. …