March 2026 update
March 14, 2026
Lessons UI improvements:
- Refactored code blocks — lessons now use components with syntax highlighting
- Added diff highlighting to visually mark added and removed lines
- Added line marks support for code blocks
- Collapsed import/declaration sections in Java file examples to reduce noise
- Added component to surface code convention tips inline in lessons
December 2025 update #1
December 22, 2025
Added comments section to lessons.
New lessons: