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 enhance code flexibility.

• They violate the Open Closed principle.

• They simplify the debugging process.

• They make the code more readable.

How does the Strategy pattern help in managing different algorithms?

• By using a single class for all algorithms.

• By encapsulating each algorithm in its own class.

• By hardcoding algorithms into the main class.

• By using conditional statements to switch algorithms.

What is the main advantage of using a common base class in the Strategy pattern?

• It allows for hardcoding of algorithms.

• It ensures that all strategies have the same implementation.

• It makes the code dependent on specific implementations.

• It enables the context to use any algorithm interchangeably.

Why are strategies in the Strategy pattern considered dynamic?

• Because they do not require a base class.

• Because they are implemented using conditional statements.

• Because they are hardcoded into the context.

• Because they can be specified at runtime.

How can strategies acquire data from the context in the Strategy pattern?

• By hardcoding data into the strategy.

• By using global variables.

• By accessing data through a reference to the context.

• By being passed data directly from the context.

What is a benefit of passing the context as an argument to a strategy?

• It simplifies the implementation of conditional statements.

• It allows strategies to modify the context directly.

• It makes the strategies dependent on specific data structures.

• It enables strategies to access only the data they need.

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

• Because it relies on global variables for data access.

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

• Because it uses a single implementation for all strategies.

• Because it eliminates the need for a base class.