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What is true about the strategy pattern?
In Strategy pattern, a class behavior or its algorithm can be changed at run time. This type of design pattern comes under behavior pattern. In Strategy pattern, we create objects which represent various strategies and a context object whose behavior varies as per its strategy object.
What is the use of strategy pattern?
In computer programming, the strategy pattern (also known as the policy pattern) is a behavioral software design pattern that enables selecting an algorithm at runtime. Instead of implementing a single algorithm directly, code receives run-time instructions as to which in a family of algorithms to use.
In which scenarios should one select a strategy pattern?
Where Would I Use This Pattern? The Strategy pattern is to be used where you want to choose the algorithm to use at runtime. A good use of the Strategy pattern would be saving files in different formats, running various sorting algorithms, or file compression.
Where do you use strategy patterns?
Use the pattern when your class has a massive conditional operator that switches between different variants of the same algorithm. The Strategy pattern lets you do away with such a conditional by extracting all algorithms into separate classes, all of which implement the same interface.
What is the strategy pattern?
Wikipedia defines strategy pattern as: “In computer programming, the strategy pattern (also known as the policy pattern) is a software design pattern that enables an algorithm’s behavior to be selected at runtime. The strategy pattern.
How does the strategy pattern work?
In computer programming, the strategy pattern (also known as the policy pattern) is a behavioral software design pattern that enables selecting an algorithm at runtime . Instead of implementing a single algorithm directly, code receives run-time instructions as to which in a family of algorithms to use.
Should the strategy pattern be stateless?
Even though is not very common for a Strategy to have a state, if our implementation requires one, the Enums are not the right path to follow. Our Strategy Pattern implementation must be stateless. Also we must keep in mind the number of implementations of the Strategy that we need.