1 Type Erasure1.1 OverviewC++ is a strongly typed language, but when it comes to abstract design, the hard coding caused by strong typing can become a hassle. This is where we need the help of type erasure technology. Type erasure is a programming technique that allows you to operate on various concrete types through generic … Read more
Indicators: A Powerful C++ Library for Adding Cool Progress Bars and Indicators to Your Programs indicators is a library designed for modern C++ that displays various progress bars and indicators in the terminal. It is ideal for tasks that require visual feedback, such as file downloads and task progress displays. Next, let’s take a look … Read more
Problem Description Given a positive integer n, process each digit from low to high (if the input number has less than3 digits, pad with leading zeros to3 digits, for example, the input8 is treated as008, and the input26 is treated as026), generate the energy value according to the following rules: Even Position: If the current … Read more
Detailed Explanation of Core Points for C++ GESP Level 3 In the GESP Level 3 exam, C++ is the core language assessed, and mastering the key points is crucial for success. Today, we will systematically outline the important and frequently tested knowledge points in the GESP Level 3 exam, combined with real questions and practice … Read more
Problem Description In the era of interstellar exploration, humanity has launched the “Solar Walk” program! Astronauts, equipped with high-tech walking gear, take a stable step of 1 meter every second. The distance from Earth to the Sun is a constant 1.5×10^11 meters, and the length of each step is set by the equipment parameters as … Read more
Click the blue text to follow the author 1. Overview of C++ STL Set Algorithms The C++ Standard Template Library (STL) provides a rich set of algorithms that operate on sorted ranges. These algorithms are located in the <span><algorithm></span> header file. They can perform set operations such as union, intersection, difference, and symmetric difference. Using … Read more
Core Value of Priority Queue The <span>priority_queue</span> container adapter in the C++ Standard Library provides an efficient way to maintain a priority data structure. This article will delve into its core features and demonstrate its applications in system design and algorithm optimization through practical examples. Basic Usage Analysis #include <iostream> #include <queue> int main() { … Read more
Children often encounter various issues during C++ programming, which can be related to syntax, logic, and understanding. Below, I will detail some common problems and their corresponding solutions: 1. Syntax Errors Missing Semicolon Problem: In C++, every statement should end with a semicolon (;). Missing a semicolon will lead to a compilation error. Solution: Check … Read more
Keccak-tiny: A Lightweight C++ Library Keccak-tiny is a C++ library based on the Keccak algorithm, known for its simplicity and efficiency. The Keccak algorithm is a powerful hashing algorithm widely used in the field of cryptography. Keccak-tiny provides an easy-to-use interface, allowing developers to easily implement secure data hashing in their projects. Next, let’s delve … Read more
Last year, I specifically introduced the extremely rare C++ syntax <span>……</span> in the article “What does the …… mean in C++?” which is actually an abbreviated syntax for <span>…, …</span>. The following three forms are completely equivalent: template<class… Args> void f(Args……) {} template<class… Args> void f(Args… …) {} template<class… Args> void f(Args…, …) {} The … Read more