Behavioral Design Patterns in C++ - Introduction-Strategy Pattern

The video tutorial explains the limitations of using conditional statements for implementing algorithms and introduces the Strategy pattern as a solution. The Strategy pattern encapsulates algorithms in separate classes, promoting flexibility and extensibility by allowing new strategies to be added without modifying existing code. The tutorial covers the intent and structure of the Strategy pattern, highlighting its ability to decouple algorithms from the context. It also discusses dynamic strategies, data handling methods, and various implementation alternatives using language features.

What is a major drawback of using conditional statements for implementing variations in behavior?

• They violate the Open Closed principle.

• They simplify the debugging process.

• They make the code more readable.

• They enhance code flexibility.

How does the Strategy pattern help in managing variations in algorithms?

• By using a single class for all algorithms.

• By encapsulating each algorithm in its own class.

• By using more conditional statements.

• By eliminating the need for algorithms.

What is the main intent of the Strategy pattern?

• To tightly couple algorithms with the context.

• To eliminate the need for algorithms.

• To encapsulate algorithms and make them interchangeable.

• To define a single algorithm for all use cases.

In the Strategy pattern, how are different algorithms related to each other?

• They are directly used in the context class.

• They are implemented in a single class.

• They are inherited from a common base class.

• They are completely independent and unrelated.

What is a benefit of specifying a strategy at runtime?

• It requires more conditional statements.

• It makes the code less flexible.

• It enables dynamic strategies and loose coupling.

• It allows for static coupling between context and strategy.

How can strategies acquire data from the context?

• By using global variables.

• By having a reference to the context.

• By pushing all data into the strategy.

• By ignoring the context data.

Why is the Strategy pattern considered flexible in terms of implementation?

• Because it requires no context data.

• Because it eliminates the need for any algorithms.

• Because it can be implemented in various ways using language features.

• Because it uses a single implementation method.