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Hi, I'm Omar Alaa, the creator behind Debug Duck and a Senior Android Software Engineer with 8+ years of experience in FinTech, Utilities, and POS systems. I produce educational content on software engineering, Android development, APDU, and design principles, aiming to simplify complex technical concepts for learners at all levels.

I enjoy sharing insights through videos, tutorials, and practical examples, helping others enhance their skills and explore the tech world. Always eager to connect with like-minded professionals and contribute to the software development community.

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Videos

2:52

6- Stack

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30 min ago

3:07

5- Doubly Linked List

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1d ago

2:52

4- Linked List Basics

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1d ago

3:06

3- Strings

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3d ago

3:08

2- Arrays

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3d ago

2:56

1- Introduction to Data Structures

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5d ago

3:36

15- Variance Case Studies

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2w ago

3:42

14- Designing Your Own Generic Framework

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2w ago

3:31

13- Variance in Flow & Reactive Streams

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2w ago

3:26

12- Variance in Coroutines

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2w ago

3:36

11- Variance in Clean Architecture

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2w ago

3:21

10- Generic Constraints & Variance

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3w ago

3:12

9- Invariance When Neither in Nor out Works

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3w ago

3:16

8- Designing Consumer APIs

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3w ago

3:21

7- Designing Read Only APIs

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4w ago

3:16

6- Variance in Kotlin Collections Internals

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1mo ago

3:36

5- Variance and Function Types

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1mo ago

3:36

4- Star Projections

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1mo ago

3:46

3- Type Projections

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1mo ago

4:06

2- Use Site Variance

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1mo ago

4:06

1- Declaration Site Variance Deep Dive

21 views

1mo ago

3:26

15- Variance Summary & Real Project Examples

16 views

1mo ago

4:01

14- Common Variance Mistakes

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1mo ago

3:51

13- Variance in Kotlin Collections

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1mo ago

3:26

12- Variance Decision Guide

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1mo ago

3:22

11- Producer vs Consumer Rule

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1mo ago

3:11

10- Practical Examples of in

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1mo ago

3:11

9- The in Keyword

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2mo ago

3:16

8- Understanding Contravariance Conceptually

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2mo ago

3:46

7- Practical Examples of out

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2mo ago