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Structural Design Patterns in Modern C++ - Applying Virtual Proxy

Structural Design Patterns in Modern C++ - Applying Virtual Proxy

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial explains the concept of a bitmap proxy, which inherits from an image class to maintain the same interface as a bitmap. It covers the use of inheriting constructors to simplify implementation and the importance of a destructor for managing bitmap instances. The tutorial demonstrates how to check if a bitmap is loaded, how to load it conditionally based on the file name, and the benefits of using a proxy to avoid expensive loading processes. It concludes with a class diagram illustrating the interaction between the client, bitmap proxy, and bitmap.

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7 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the purpose of using inheriting constructors in the Bitmap proxy?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the significance of the forward declaration of bitmap in the code?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

Describe the role of the boolean member variable in the Bitmap proxy.

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What modifications were made to the Bitmap proxy constructors, and why?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

What happens if the display function is not called on the Bitmap proxy?

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain how the Bitmap proxy handles loading of the bitmap.

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7.

OPEN ENDED QUESTION

3 mins • 1 pt

How does the Bitmap proxy improve performance when dealing with bitmaps?

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