Rust

OOP’s reference semantics were manageable in single-threaded code. But when CPUs went multicore in 2005, hidden shared state went from ‘confusing’ to ‘catastrophic.’ This is why Go, Rust, and modern languages abandoned default references for value semantics.

All Python developers know that everything in Python is an object. But at what cost? A deep dive into Python’s heap-only memory model and the 28-byte overhead of storing a simple integer.

A complete overview of Rust testing strategies: unit tests, integration tests, property-based testing, snapshot testing, parameterized tests, and doctests. Learn which testing approach fits your needs.

Three Rust error handling crates that seem to overlap but fill distinct roles. Learn when to use thiserror for typed errors, anyhow for application code, and error-envelope for HTTP boundaries.

The ? operator looks like magic. One character that handles errors, converts types, and returns early. Understand how it actually works under the hood and when to use it.

Start on Mac, continue on Linux–same Claude conversation. Plus integrated AWS/Rust/Go/Python tools, extensible hooks, multi-vault secrets, and modular architecture. A framework, not just dotfiles.