Hello everyone! Today we will discuss how to effectively use C++ exception handling in Excel data processing. 1. Why is Exception Handling Necessary? Imagine you are importing a 500MB Excel file and suddenly discover that the file is corrupted—an application without exception handling would crash directly, while one with exception handling can gracefully inform the … Read more
Today, we will explore a cool and practical technology—using C++ Lambda expressions to handle various conditional judgments in Excel. Lambda acts like a small function wizard that can be created anytime and anywhere, making your Excel data processing code super flexible and powerful! 1. Review of Lambda Expression Basics Lambda expressions are anonymous function objects … Read more
Hello everyone! Today, I will guide you through implementing a very useful data grouping feature in C++ similar to that in Excel. 1. Basic Features of Excel’s Grouping Function The grouping function in Excel has three main features: Hierarchical Structure: Allows for the creation of multi-level groups Expand/Collapse: Toggle the display of details at any … Read more
C++ Guide:<span>wstring</span> – Wide Character String Type 1. What is <span>wstring</span>? <span>std::wstring</span> is a wide character (wchar_t) string type provided by the C++ standard library. Unlike <span>std::string</span>, <span>std::wstring</span> is used to store Unicode characters, making it suitable for applications that require multilingual support, such as Chinese, Japanese, Korean, and other non-ASCII languages. 2. Underlying Data … Read more
C++ References and Reference Types: Efficient Use of Pointers In C++, both references and pointers are tools used for indirect access to variables, but they have significant differences. This article will detail references in C++ and their differences from pointers, along with code examples to help beginners understand. What is a Reference? In C++, a … Read more
Learning Objectives: Fundamentals of C++ Programming Language Learning Content: Basic Syntax This article is aimed at beginners and introduces the basic usage of C++, including control statements, commonly used data structures from the standard library, etc., to help quickly get started with coding challenges. For example: Standard Output Control Statements Basic Data Structures Summary Standard … Read more
Follow me to achieve: cognitive evolution, capability evolution, and wealth evolution!This article focuses on C++ technology, part of the professional capability evolution series.Introduction:Do you know the concept of ‘Polymorphism’, one of the three main characteristics of C++?What are its functions and benefits?Part 1:Concept of PolymorphismPolymorphism is the third core characteristic of object-oriented programming, allowing objects … Read more
Dear parents 💡I’ve heard that many parents have started planning a “programming path” for their childrenBut when faced with C++, a subject that sounds very hardcoreisn’t it both exciting and a bit confusing? How to scientifically plan a children’s C++ learning path 👇🌟 Why choose C++?✅ The only designated language for the Informatics Olympiad (NOI/NOIP)✅ … Read more
The “C++ Basics” series of blogs serves as a reference to the book “C++ Primer (5th Edition)” (C++11 Standard), which includes my own study notes. 1. Type Aliases Type aliases are names that serve as synonyms for certain types. There are many benefits to using type aliases; they simplify complex type names, making them clearer … Read more
Why Do We Need Callback Functions? In traditional synchronous programming, we directly call functions and wait for their return results. This pattern is simple and intuitive, but when faced with time-consuming operations (such as I/O operations, network requests, etc.), the thread gets blocked, leading to low resource utilization. Callback functions are key to solving the … Read more