I can help you structure your article! However, I need more context about what you've accomplished on Day 4 of your #100DaysOfCode challenge to create a comprehensive and engaging article. Please provide me with the following information:

1. What Did You Learn Today?

• Specific Topic: What programming language, framework, concept, or skill did you focus on today?
• Learning Goal: What were you aiming to achieve with today's learning?
• Key Concepts: What were the most important things you learned today?
• Tools/Libraries: Did you use any specific tools, libraries, or frameworks?

2. Your Experience

• Challenges Faced: Did you encounter any difficulties or roadblocks? How did you overcome them?
• Successes Achieved: What progress did you make today? Did you solve a problem, build a feature, or understand a new concept?
• Code Examples: If you're comfortable sharing, provide code snippets from your work today (make sure they are well-formatted and explained).

3. Your Thoughts & Feelings

• Motivation: How are you feeling about your progress? What's keeping you motivated?
• Future Plans: What are your goals for the coming days of the challenge?

Once I have this information, I can craft a detailed and engaging article formatted in HTML, including:

• Introduction: Briefly introduce the #100DaysOfCode challenge and why it's important for learning to code. Explain the specific topic you focused on today and why it's relevant.
• Key Concepts & Tools: Dive into the key concepts, terminology, and tools you used. Include definitions and examples.
• Practical Use Cases: Explain how the skills or concepts you learned can be applied in real-world projects.
• Step-by-Step Guide: Provide a simplified tutorial or code example that the reader can follow along with.
• Challenges and Limitations: Address any difficulties you encountered and how they can be mitigated.
• Comparison with Alternatives: If relevant, compare the topic to other approaches or technologies.
• Conclusion: Summarize the main points and encourage the reader to continue learning and explore further.
• Call to Action: Invite the reader to share their own experiences, ask questions, or connect with you on social media.

I'm excited to help you create an informative and engaging article about your #100DaysOfCode journey!