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Lambda expressions were introduced in C++11 to simplify the use of function objects, especially when passing custom logic to standard algorithms like std::sort. Motivation for Lambda Expressions In C++98, defining custom comparison logic required creating a separate functor class: struct Product { std::string name; double price; int ...

Smart pointers, introduced in C++11, provide automatic memory management by controlling the lifecycle of dynamically allocated objects. They help developers avoid common pitfalls like memory leaks and dangling pointers. The standard library offers three main types: std::unique_ptr, std::shared_ptr, and std::weak_ptr. This guide covers they func ...

Introduction to Aspect-Oriented Programming Aspect-Oriented Programming (AOP) serves as a valuable supplement to Object-Oriented Programming (OOP) by addressing cross-cutting concerns. While OOP effectively models vertical, hierarchical relationships through inheritance, it struggles to encapsulate horizontal, shared behaviors that span across ...

The Problem with NULL In C and C++, the NULL macro has been the traditional way to represent a null pointer. However, its definition differs between the two languages, leading to potential ambgiuities, especially in C++. In C, NULL is typically defined as (void *) 0, a pointer to memory address zero. The C language allows implicit conversion fr ...

Preventing Inheritance of Base Class Methods In C++11, the = delete specifier provides a clean way to disable specific functions. This is particularly useful when you want to prevent a derived class from using certain member functions inherited from a base class. Conisder a simple arithmetic class: #include <iostream> class BaseCalculato ...

Introduction This document summarizes essential C++ concepts including syntax, memory management, and object-oriented programming. 1. C++ Fundamentals 1.1 Pointers and References Differences Between Pointers and References A pointer stores the address of an object. Its itself a variable (a named object) and has its own address, allowing pointer ...

Standardization and Historical Context The C++11 standard, ratified in 2011, marked a significant evolution from C++98/03. It introduced approximate 140 new features alongside numerous defect resolutions, transforming the language to better support modern system and library development with enhanced safety, efficiency, and programmer productivi ...

Understanding Rvalue References, Move Semantics, and Perfect Forwarding in Modern C++ Distinguishing Value Categories In C++11 and later, expressions are categorized into lvalues, prvalues, and xvalues. The latter two (xvalues and prvalues) are collectively known as rvalues. The primary practical distinction lies in whether the address of the e ...

Introduction to Modern C++ (C++11/14/17/20) This guide documents key features from the Modern C++ Tutorial: Quick Start with C++11/14/17/20. Chapter 2: Core Language Enhancements Compile-time Constants with constexpr The constexpr keyword allows expressions to be evaluated at compile time, enabling optimizations. constexpr int fibonacci_sequenc ...

1. long long Integer Type The long long type is an extended 64-bit integer type (8 bytes) with a signed range of -2^63 to 2^63 - 1. To explicitly denote a value as a signed long long, append the suffix LL or II (e.g., 10LL represents the signed 64-bit integer 10). For unsigned long long values, use the suffix ULL or UII (e.g., 10ULL for the uns ...