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12 lines
496 B
Markdown
12 lines
496 B
Markdown
## Façade
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Provide a unified interface to a set of interfaces in a subsystem. Facade
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defines a higher-level interface that makes the subsystem easier to use.
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The pattern has structural purpose and applies to objects.
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### When to use
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* you want to provide a simple interface to a complex subsystem
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* there are many dependencies between clients and the implementation classes of an abstraction
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* you want to layer your subsystems, use a facade to define an entry point to each subsystem level
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