Behavioral Design Patterns in C++ - Hangman - VI

The lecture explains an alternative implementation of the Memento design pattern by storing mementos in a file instead of memory, using serialization and deserialization. This approach is beneficial when mementos consume significant memory. The process involves creating a new project, modifying the game state to a structure, and manually serializing and deserializing the data. The lecture concludes with a discussion on different serialization formats and the advantages of this method when handling large states.

What is the primary reason for storing mementos in a file instead of memory?

• To increase the speed of the application

• To reduce memory usage when mementos are large

• To make the application more secure

• To simplify the code structure

What is the purpose of the 'serialize' function in the context of the Memento design pattern?

• To compress the game state

• To convert the game state into a file format

• To display the game state on the screen

• To encrypt the game state

Why are the attributes of the game state made public in the Hangman example?

• To allow direct access for serialization

• To improve encapsulation

• To reduce code complexity

• To enhance security

What is a key requirement for an object to be serialized and deserialized?

• It must be encrypted

• It must be default constructible

• It must be a singleton

• It must be immutable

What should be done before reading the player word during deserialization?

• Convert the input stream to uppercase

• Encrypt the input stream

• Reverse the input stream

• Skip a space character in the input stream

What is one advantage of storing mementos in a file?

• It reduces the need for serialization

• It conserves memory when storing multiple mementos

• It simplifies the user interface

• It allows for faster access to mementos

Which formats can be used for serializing the state?

• Only XML format

• Only text format

• Only binary format

• Binary, text, XML, or JSON formats