Structural Design Patterns in Modern C++ - Basic Example - Composite Design Pattern

The video tutorial explains the Composite design pattern, starting with an introduction and moving through the implementation of base and leaf clauses. It covers adding composite clauses, using vectors for data structure, and implementing remove algorithms with namespace considerations. Helper code is added to understand output, and a main function is created to demonstrate the composite structure. The tutorial concludes with a class diagram explanation and a summary of the composite design pattern's structure.

What is the first step in implementing the Composite design pattern?

• Adding a new project

• Writing test cases

• Implementing the base clause component

• Creating a class diagram

Why are some methods in the leaf clause left empty?

• Due to a lack of time

• They are not part of the design pattern

• To be implemented later

• Because they are not needed in the leaf

What data structure is used to hold children in the composite clause?

• Vector

• Array

• Map

• List

What is the purpose of the erase-remove idiom in the remove operation?

• To find elements in a container

• To remove elements from a container

• To add elements to a container

• To sort elements in a container

What is argument-dependent lookup?

• A technique to optimize code execution

• A way to locate functions in the same namespace as the object's class

• A process to debug code

• A method to find arguments in a function

Why should global variables be avoided in production code?

• They can lead to unexpected behavior

• They are not supported in all languages

• They are difficult to read

• They make the code slower

What is the relationship between a composite and its components in the class diagram?

• Inheritance

• Association

• Aggregation

• Dependency