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NEW in v1.9.0: Enhanced glossary with comprehensive cross-references linking every term to relevant guides, cheat sheets, and code examples throughout the repository!
- Quick Start
- What Makes This Different
- Repository Structure
- Available Cheat Sheets
- In-Depth Guides
- Real-World Examples
- Glossary
- Troubleshooting
- Versioning
- Changelog
Clone the repository to get started with the examples and guides locally:
git clone https://github.com/tldrwtf/info.git
cd infoThis isn't just another code repository—it's a comprehensive learning system.
Every solution file features:
- Comprehensive docstrings with Args, Returns, Examples, and Best Practices
- Type hints for better IDE support and code clarity
- Inline comments explaining the logic and reasoning behind decisions
Example from the Python solutions:
def list_statistics(numbers: List[float]) -> Optional[Dict[str, float]]:
"""
Calculate statistical measures for a list of numbers.
Demonstrates:
- Guard clause pattern (early return for empty list)
- Dictionary construction with multiple key-value pairs
- Built-in aggregate functions (max, min, sum, len)
Best Practice:
Returning a dictionary allows callers to access specific
statistics by name (e.g., result['avg']) rather than
relying on positional access of a tuple.
"""
if not numbers: # Guard clause - check edge case first
return None
return {
"max": max(numbers), # Largest value
"min": min(numbers), # Smallest value
"avg": sum(numbers) / len(numbers), # Mean
"sum": sum(numbers) # Total
}the library_api_code/ demonstrates real-world patterns:
- Fully documented ORM models with relationship diagrams
- Blueprint architecture with clear separation of concerns
- Authentication patterns with security best practices explained
- RESTful API design following industry standards
Example from models.py:
class Users(Base):
"""
Represents a library user (patron or admin).
Relationships:
loans: One-to-Many → One user can have multiple loans
Accessible via user.loans (returns list of Loan objects)
Attributes:
password: Hashed password (NEVER store plain text in production!)
role: User role - either "User" or "Admin"
"""The React guides now include:
- Advanced Hooks (useReducer, useContext, useMemo, useCallback) with complete examples
- Custom Hooks showing reusable logic extraction
- Performance optimization strategies
- Common mistakes section highlighting pitfalls to avoid
Unlike typical code repositories that just show what works, I explain:
- Why certain patterns exist
- When to use each approach
- Trade-offs between different solutions
- Common pitfalls and how to avoid them
- Best practices vs. shortcuts
/
├── cheatsheets/ # Core concept cheat sheets (Python, JS, CSS, SQL, etc.)
├── guides/ # In-depth tutorials (Advanced patterns, Flask, Auth)
├── Practice_Assignments_Compiled.md # Central hub for all coding challenges
├── Practice_Solutions/ # Full solution code for all assignments
├── library_api_code/ # Production-grade Flask Application
├── react_starter_code/ # Basic React/Vite implementation
└── README.md # Project documentation
| Topic | Description | Link |
|---|---|---|
| Python Basics | Variables, Loops, Functions | Link |
| Data Structures | Lists, Dicts, Trees, Graphs | Link |
| OOP | Classes, Inheritance, Polymorphism | Link |
| Regex | Pattern Matching & Validation | Link |
| Big O | Time & Space Complexity | Link |
| HTML Basics | Tags, Structure, Attributes | Link |
| CSS Basics | Selectors, Box Model, Colors | Link |
| Bootstrap | Grid, Components, Utilities | Link |
| JS Basics | Vars, Types, Loops | Link |
| JS Objects | Objects, Arrays, Methods | Link |
| SQL & ORM | Queries, Joins, SQLAlchemy | Link |
| APIs | Requests, REST, JSON | Link |
Explore complex topics with the detailed guides in the guides/ directory.
- Backend Architecture: Flask REST API Development, Pet Clinic ORM Walkthrough, Flask Advanced Features
- Frontend Development: React Basics, JavaScript Workshops, CSS Layouts, Modern Ecommerce
- Modern Fullstack: Next.js & Firebase Auth, GraphQL Integration
- Real-Time & APIs: WebSockets (SocketIO), API Auth Guide
- DevOps & Testing: CI/CD Pipelines, Docker & Containers, Python API Testing
- Data & Algorithms: Algorithms Guide, Advanced SQL, Linked Lists & Custom Structures
- Library API: A fully functional REST API for managing a library system. Located in
library_api_code/. - React Starter Hub: A basic Vite/React project demonstrating state and data fetching. Located in
react_starter_code/. - Pet Clinic CLI: A modular ORM project with Owners, Pets, and Appointments. Architectural Guide.
- Next.js Auth: Firebase Authentication with Context API pattern. Usage Guide.
Confused by a term? Check out the comprehensive Glossary of Terms featuring:
- 60+ full-stack development terms covering frontend, backend, databases, DevOps, and more
- Cross-reference links connecting every definition to relevant guides, cheat sheets, and code examples
- Navigation hub allowing you to jump from concepts to learning materials instantly
Each glossary entry includes "See also" links pointing to:
- In-depth guides for comprehensive learning
- Cheat sheets for quick reference
- Code examples for practical implementation
Common issues when setting up the projects:
1. ModuleNotFoundError in Python
- Cause: Virtual environment not activated or dependencies not installed.
- Fix:
source venv/bin/activate pip install -r requirements.txt
2. Flask App Not Starting
- Cause: Port 5000 might be in use.
- Fix: Run on a different port:
flask run --port=5001
- v1.9.0: Enhanced glossary with comprehensive cross-reference links to guides, cheat sheets, and code examples.
- v1.8.0: Comprehensive code documentation expansion with heavily commented examples across all materials.
- v1.7.0: Added Containerization (Docker) and functional React Reference Implementation.
- v1.6.0: Final expansion pass (Search/Sort Algos, Formik/Yup, Doubly Linked Lists).
- v1.5.0: Added Modern Fullstack Ecosystem (Next.js, Firebase, GraphQL Enrichment).
- v1.4.0: Massive expansion of Advanced Data Structures, WebSockets, and CLI Architecture.
- v1.3.0: Comprehensive documentation overhaul.
commit v1.9.0
Date: ???
feat: Enhanced glossary with comprehensive cross-reference navigation
GLOSSARY ENHANCEMENTS:
- Enhanced GLOSSARY.md with cross-reference links for all 60+ terms
* Added "See also" sections linking each term to relevant resources
* Connected API term to 5 guides/cheatsheets (Flask REST API, API Auth, Building AI Ready APIs, etc.)
* Connected React term to 4 guides and starter code (React Basics, Modern Ecommerce, Fullstack, etc.)
* Connected SQLAlchemy term to 4 guides and model code examples
* Connected all Database terms to SQL guides and ORM documentation
* Connected all DevOps terms to Docker and CI/CD guides
* Connected all Frontend terms to HTML/CSS/JS/React resources
* Connected all Backend terms to Flask guides and library API code
* Connected Authentication terms to OAuth2 and API Auth guides
NAVIGATION IMPROVEMENTS:
- Glossary now serves as central navigation hub
- Direct links from definitions to learning materials
- Multiple resource types per term (guides, cheatsheets, code examples)
- Consistent markdown link format for easy GitHub/local browsing
DOCUMENTATION UPDATES:
- Updated README.md with enhanced glossary description
- Added glossary features section highlighting cross-references
- Updated version badge to v1.9.0
- Added v1.9.0 to versioning and changelog sections
commit v1.8.0
Date: ???
feat: Comprehensive code documentation expansion
PYTHON PRACTICE SOLUTIONS:
- Enhanced Practice_Solutions/Python_Basics/Intro_Practice_Solutions.py
* Added comprehensive docstrings with Args, Returns, Examples, and Notes
* Added type hints for all functions (-> None, parameter types)
- Enhanced Practice_Solutions/Python_Basics/Control_Flow_Solutions.py
* Comprehensive docstrings for all 7 functions
* Type hints throughout
* Detailed algorithm explanations with step-by-step logic
* Security notes (password example) and real-world context
- Enhanced Practice_Solutions/Data_Structures/Lists_Dicts_Solutions.py
* Full typing support with List, Dict, Optional, Set
* Docstrings for all functions explaining data structure operations
* Mathematical context for set operations
* Alternative implementation suggestions (list comprehension)
* Best practice callouts throughout
FLASK API CODE:
- Enhanced library_api_code/app/models.py (ORM Documentation)
* Module-level docstring with ASCII schema diagrams
* Class docstrings for all 6 models (Users, Loans, Books, Orders, Items, ItemDescription)
* Comprehensive relationship documentation (One-to-Many, Many-to-Many)
* Association table explanation with visual table structure
* End-of-file guide on SQLAlchemy 2.0 concepts
* Query examples demonstrating relationship usage
* Cascade and lazy loading explanations
REACT GUIDES:
- Massively expanded guides/React_Basics_Guide.md
* Added Advanced Hooks section:
- useReducer with complete counter example
- useContext with theme and auth patterns
- useMemo with performance examples
- useCallback with React.memo integration
* Added Custom Hooks section with 3 complete examples:
- useLocalStorage (localStorage sync)
- useFetch (API data fetching)
- useToggle (boolean state management)
* Added Component Composition Patterns:
- Render Props pattern
- Compound Components pattern (Tabs example)
* Added Performance Optimization section:
- React.memo usage
- Lazy loading with Suspense
- Avoiding inline functions/objects
* Added Error Boundaries section with class component example
* Added Common React Mistakes section (6 pitfalls with examples)
* Added Best Practices Summary
* Cross-references to related guides
DOCUMENTATION STANDARDS ESTABLISHED:
- Consistent docstring format across all Python code
- Type hints for better IDE support and type safety
- Educational comments explaining WHY and WHEN, not just WHAT
- Best practices callouts throughout
- Common pitfalls and gotchas sections
- Real-world usage examples
- Cross-referencing between related content
commit v1.7.0
Date: ???
feat: Docker & React Implementation
- Created guides/Docker_and_Containerization_Guide.md (Basics, Dockerfile, Compose)
- Created react_starter_code/ (Functional Vite + React boilerplate project)
- Documented multi-container stack patterns
commit v1.6.0
Date: ???
feat: Curriculum polish and advanced topic expansion
- Enriched guides/Algorithms_Guide.md with full Bubble Sort and Merge Sort implementations
- Enriched guides/Linked_Lists_and_Custom_Data_Structures_Guide.md with Doubly Linked Lists and real-world use cases (Browser History)
- Enhanced guides/Modern_React_Ecommerce_Guide.md with industrial Form Validation (Formik + Yup)
- Updated GLOSSARY.md with Big O, Recursion, and TDD definitions
- Standardized navigation index in README.md