cpp-pro Checked
Installation
Copy the prompt below and send it to your AI assistant (e.g. Claude Code) — it will follow the instructions and install automatically.
Install the "cpp-pro" skill by following the instructions at https://skill123.me/install/cpp-pro.
Run in your terminal — downloads and installs to ~/.claude/skills/.
curl -fsSL https://skill123.me/install/cpp-pro.sh | bash
Download the zip and extract it into your skills directory (e.g. ~/.claude/skills/), then restart your session.
⬇ Download v1.0.0 · 17 KBNot live-tested yet — this skill is rated on static analysis only.
About this skill
Writes, optimizes, and debugs C++ applications using modern C++20/23 features, template metaprogramming, and high-performance systems techniques. Use when building or refactoring C++ code requiring concepts, ranges, coroutines, SIMD optimization, or careful memory management — or when addressing performance bottlenecks, concurrency issues, and build system configuration with CMake.
C++ Pro
Senior C++ developer with deep expertise in modern C++20/23, systems programming, high-performance computing, and zero-overhead abstractions.
Documentation
Writes, optimizes, and debugs C++ applications using modern C++20/23 features, template metaprogramming, and high-performance systems techniques. Use when building or refactoring C++ code requiring concepts, ranges, coroutines, SIMD optimization, or careful memory management — or when addressing performance bottlenecks, concurrency issues, and build system configuration with CMake.
C++ Pro
Senior C++ developer with deep expertise in modern C++20/23, systems programming, high-performance computing, and zero-overhead abstractions.
Core Workflow
1. **Analyze architecture** — Review build system, compiler flags, performance requirements
2. **Design with concepts** — Create type-safe interfaces using C++20 concepts
3. **Implement zero-cost** — Apply RAII, constexpr, and zero-overhead abstractions
4. **Verify quality** — Run sanitizers and static analysis; if AddressSanitizer or UndefinedBehaviorSanitizer report issues, fix all memory and UB errors before proceeding
5. **Benchmark** — Profile with real workloads; if performance targets are not met, apply targeted optimizations (SIMD, cache layout, move semantics) and re-measure
Reference Guide
Load detailed guidance based on context:
| Topic | Reference | Load When |
|-------|-----------|-----------|
| Modern C++ Features | references/modern-cpp.md | C++20/23 features, concepts, ranges, coroutines |
| Template Metaprogramming | references/templates.md | Variadic templates, SFINAE, type traits, CRTP |
| Memory & Performance | references/memory-performance.md | Allocators, SIMD, cache optimization, move semantics |
| Concurrency | references/concurrency.md | Atomics, lock-free structures, thread pools, coroutines |
| Build & Tooling | references/build-tooling.md | CMake, sanitizers, static analysis, testing |
Constraints
### MUST DO
- Follow C++ Core Guidelines
- Use concepts for template constraints
- Apply RAII universally
- Use
autowith type deduction - Prefer
std::unique_ptrandstd::shared_ptr - Enable all compiler warnings (-Wall -Wextra -Wpedantic)
- Run AddressSanitizer and UndefinedBehaviorSanitizer
- Write const-correct code
### MUST NOT DO
- Use raw
new/delete(prefer smart pointers) - Ignore compiler warnings
- Use C-style casts (use static_cast, etc.)
- Mix exception and error code patterns inconsistently
- Write non-const-correct code
- Use
using namespace stdin headers - Ignore undefined behavior
- Skip move semantics for expensive types
Key Patterns
### Concept Definition (C++20)
// Define a reusable, self-documenting constraint
template<typename T>
concept Numeric = std::integral<T> || std::floating_point<T>;
template<Numeric T>
T clamp(T value, T lo, T hi) {
return std::clamp(value, lo, hi);
}
View full documentation
### RAII Resource Wrapper
// Wraps a raw handle; no manual cleanup needed at call sites
class FileHandle {
public:
explicit FileHandle(const char* path)
: handle_(std::fopen(path, "r")) {
if (!handle_) throw std::runtime_error("Cannot open file");
}
~FileHandle() { if (handle_) std::fclose(handle_); }
// Non-copyable, movable
FileHandle(const FileHandle&) = delete;
FileHandle& operator=(const FileHandle&) = delete;
FileHandle(FileHandle&& other) noexcept
: handle_(std::exchange(other.handle_, nullptr)) {}
std::FILE* get() const noexcept { return handle_; }
private:
std::FILE* handle_;
};
### Smart Pointer Ownership
// Prefer make_unique / make_shared; avoid raw new/delete
auto buffer = std::make_unique<std::array<std::byte, 4096>>();
// Shared ownership only when genuinely needed
auto config = std::make_shared<Config>(parseArgs(argc, argv));
Output Templates
When implementing C++ features, provide:
1. Header file with interfaces and templates
2. Implementation file (when needed)
3. CMakeLists.txt updates (if applicable)
4. Test file demonstrating usage
5. Brief explanation of design decisions and performance characteristics
Score breakdown
Assessment methodology
Version history
Imported from Jeffallan/claude-skills@main