All PatternsBehavioral
State
Allows an object to alter its behavior when its internal state changes.
State machinesWorkflow enginesGame AI
Understanding State
The State pattern allows an object to alter its behavior when its internal state changes. The object appears to change its class. It's ideal for state machines.
How It Works
Context
Order
current: Pending
States
Pending
Processing
Shipped
Behavior depends on state
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Context
Object behavior depends on its current state.
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Basic Implementation
Simple state toggle:
main.go
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Real-World Example: Order Status
E-commerce order state machine:
main.go
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