Memento

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Open its course - Design Patterns

Memento By Mukhtiar Zamin
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Students are auto-evaluated against related topics to ensure they learned it.

In this lecture we will learn about the Memento design pattern.

Watch the interactive video on Memento design pattern and also run few examples below. When you are sure about its cent percent learning then evaluate yourself.

Online More Examples

Article Example with Undo and Redo

Lab for All, By Mukhtiar Zamin

Watch the following example and then work on the lab tasks:

Code: Click on refactoring.guru

Lab Tasks for All, By Mukhtiar Zamin

Add one another primitive shape (Line or Oval) to the Shapes and then utilize/draw as primitive and compound shape in the canvas of the editor.
Implement the respective command history on this new shape as well like others.

Memento Evaluation

To earn PASS status, system is about to evaluate you using multiple choice questions (MCQs) and True/False type questions.

CAREFULLY READ THE FOLLOWING INSTRUCTIONS!
Make sure you have learned this lecture along with its topics and tutorials.
On first evaluation you get 100% marks on correct answer, then on 2nd you get 95% marks and so on.
Answer the questions with a gap NOT MORE THAN A MINUTE, Otherwise it will re-start.

I have read above instrucitons and ready for evaluation.

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Memento Lab Lab Tasks

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Memento Pattern

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