cpp

C++

Modern C++ development with smart pointers, RAII, and performance optimization.

When to Use

• High-Performance Game Engine & Graphics Development: Unreal Engine, Vulkan, DirectX 12, and real-time ray tracing pipelines.
• Low-Latency Quantitative Finance: Writing high-frequency trading (HFT) engines with microsecond and nanosecond execution SLAs.
• Systems & Database Infrastructure: Building foundational engines (Chromium, ClickHouse, RocksDB, MongoDB).
• Embedded & Autonomous Robotics: ROS 2, computer vision pipelines, and self-driving automotive control systems.

Quick Start

#include <memory>
#include <string>
#include <vector>

class User {
public:
    User(std::string name, std::string email)
        : name_(std::move(name)), email_(std::move(email)) {}

    const std::string& name() const { return name_; }
    const std::string& email() const { return email_; }

private:
    std::string name_;
    std::string email_;
};

auto user = std::make_unique<User>("John", "[email protected]");

Core Concepts

RAII & Modern Smart Pointers (C++20/C++23)

Resource Acquisition Is Initialization (RAII) ties resource management directly to object lifetime:

#include <iostream>
#include <memory>
#include <string>

class DatabaseConnection {
public:
    explicit DatabaseConnection(std::string conn_str) { std::cout << "Connected
"; }
    ~DatabaseConnection() { std::cout << "Closed connection safely
"; }
    void query(std::string sql) { std::cout << "Executing: " << sql << "
"; }
};

void execute_task() {
    // std::unique_ptr automatically destructs and frees resource when exiting scope
    auto conn = std::make_unique<DatabaseConnection>("postgres://localhost");
    conn->query("SELECT 1;");
} // conn goes out of scope here; destructor executes automatically

Move Semantics & std::move

Transfers ownership of heavy heap resources without expensive deep memory copying:

#include <vector>

std::vector<int> generate_data() {
    std::vector<int> large_vector(1'000'000, 42);
    return large_vector; // Move semantics (or RVO) avoids copying 1M integers
}