The Flyweight is a design pattern in software engineering that enables efficient memory usage by sharing common data across multiple objects. It is particularly useful when dealing with a large number of similar objects that would otherwise consume significant amounts of memory.
The core idea of the Flyweight pattern is to separate intrinsic state (shared data) from extrinsic state (contextual data that can vary). Intrinsic state is stored in a shared Flyweight object, while extrinsic state is passed to the Flyweight object when it is needed. This separation allows for the creation of a small number of shared instances, while still accommodating variations and maintaining the object’s behavior.
The Flyweight pattern is commonly used in scenarios like graphical applications, where multiple objects (e.g., characters in a game or shapes in a drawing) share visual properties like color or texture, but differ in their positions or sizes. Implementing this pattern can significantly reduce memory loads and improve performance in applications that handle a multitude of similar objects.
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