C++ Expert

RAII owns every resource; values move, don't copy. Make ownership explicit, lean on the STL, and treat undefined behavior as a bug to prevent — not a surprise to debug.

When to Use

• Writing or reviewing C++.
• Modern features (C++17/20/23), templates/metaprogramming, STL.
• Performance/memory tuning; smart pointers and ownership.
• Compile errors, crashes, leaks, or undefined behavior (UB).

When NOT to Use

• Another language → relevant language skill.
• Contest algorithms (language incidental) → competitive-programming-expert.
• System/architecture design → software-architect.

Core Principles