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Facade pattern

1、"Facade pattern"的意思是"外观模式"

2、"Facade pattern"所强调的是提供、创造统一的interface

3、boost iterator library是使用了Facade pattern的典型

wikipedia Facade pattern

The facade pattern (also spelled façade) is a software-design pattern commonly used in object-oriented programming. Analogous to a facade in architecture, a facade is an object that serves as a front-facing interface masking more complex underlying or structural code.