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📘 Daily & Weekly Learning Notes

This document tracks daily progress, experiments, and reflections across C++ 20, Embedded Systems, Zephyr RTOS, and AI Infra phases.

🗓 Timeline Recap

Period Focus Status
Aug 2025 Repo creation + Env setup + Day 1 C++/Python tasks ✅ Completed
Sep 2025 Office transition & project deliverables ⏸ Paused
Oct 25 2025 → Restart Resuming with C++ 20 & Zephyr foundation 🚀 Active

🧱 Core Setup Validation

  • ✅ g++ 12.3 · CMake 4.0.3 · Python 3.10 · CUDA 12.6
  • ✅ Docker image load/test (nvidia/cuda:12.2.0-base-ubuntu22.04)
  • ✅ Jupyter Lab functional (NumPy demo ok)
  • ✅ GoogleTest integrated in CMake workflow

📚 Learning Log – Phase 1 Kickoff

C++ 20 Re-Foundation

  • Refreshed: variables · refs · pointers · loops · functions.
  • Practiced: ranges & lambda composition.
  • Understood: auto&& for range views + lvalue/rvalue binding.
  • Explored: concepts + requires + std::span.

Python Bridge

  • Built NumPy arrays (reshape · slice · matmul).
  • Ran DecisionTreeClassifier on Iris dataset → pred = true label ✅.
  • Set up notebooks for broadcasting & stacking (next task).

Toolchain / Infra

  • Docker save/load ✅.
  • Git workflow (clean rebase · branch isolation) ✅.
  • CMake + GTest runner validated through scripts/build.sh.

⚙️ Next Immediate Steps ( Oct 25 – Nov 7 )

  1. Deep dive C++ 20 (Concepts · Ranges · std::span · Design Patterns).
  2. Install Zephyr SDK + run hello_world on QEMU Cortex-M3.
  3. Create custom Zephyr app blinky/ + scripted build pipeline.
  4. Document design insights in NOTES.md daily (keep git clean).
  5. Start Raspberry Pi SDK research for Phase 2.

🧩 Concepts Snapshot

  • auto && in templates → universal reference for perfect forwarding.
  • Input vs Random Ranges → why std::ranges::sort requires random access.
  • constexpr vs runtime computation in C++ 20 constexpr functions.
  • QEMU → emulates Cortex-M3 hardware for Zephyr dev without board.

🧠 Reflections

“Consistency outperforms intensity.”
Every hour spent here is a step away from corporate dependency and toward technical freedom.

🔖 Week 1 Complete Check

☑ C++ 20 Snippets Builds
☑ GTest Running
☑ Python Sanity Model OK
☑ Docker Pipeline OK
☑ Zephyr Env Planned
☑ GitHub Repo Clean Structure

📆 Next Review

➡ Nov 7 2025: Confirm Zephyr hello world + concept labs completion before Week 2 start.