oop-patterns

name	oop-patterns
version	3.0.0
description	Production-grade skill for Object-Oriented Programming in C++. Covers classes, inheritance, polymorphism, encapsulation, SOLID principles, and design patterns.
sasmp_version	1.3.0
skill_version	3.0.0
bonded_agent	cpp-oop-agent
bond_type	PRIMARY_BOND
category	learning
parameters	{"concept":{"type":"string","required":true,"enum":["classes","inheritance","polymorphism","encapsulation","solid","patterns"]},"pattern_name":{"type":"string","required":false,"enum":["factory","singleton","observer","strategy","decorator","adapter"]},"output_format":{"type":"string","required":false,"enum":["explanation","code_example","uml","refactoring"],"default":"code_example"}}
error_handling	{"retry_logic":{"max_attempts":3,"backoff":"exponential","initial_delay_ms":500,"jitter":true},"fallback":{"on_design_error":"suggest_alternative_pattern","on_violation":"explain_principle_and_fix"}}

OOP Patterns Skill

Production-Grade Learning Skill | Object-Oriented Design

Master C++ OOP concepts and industry-standard design patterns.

---

The Four Pillars

1. Encapsulation

class BankAccount {
private:
    std::string id_;
    double balance_{0.0};  // Default member init

public:
    explicit BankAccount(std::string id) : id_(std::move(id)) {}

    // Read-only access
    [[nodiscard]] double balance() const { return balance_; }
    [[nodiscard]] const std::string& id() const { return id_; }

    // Controlled mutation with validation
    void deposit(double amount) {
        if (amount <= 0) {
            throw std::invalid_argument("Amount must be positive");
        }
        balance_ += amount;
    }

    bool withdraw(double amount) {
        if (amount <= 0 || amount > balance_) return false;
        balance_ -= amount;
        return true;
    }
};

2. Inheritance