This article introduces Lispy, a parsing‑style language built in C, outlines its design goals, showcases core features such as interactive REPL, arithmetic, list handling, lambda functions, conditional logic, and demonstrates a suite of utility libraries with complete code examples.
This article explains the fundamental concepts behind C language compilation, covering lexical, syntax, and semantic analysis, GCC options, file types, static and dynamic linking, ELF structure, and the loader process that turns source code into a runnable program.
This article provides a comprehensive guide to C functions—including their categories, signatures, parameter passing, pointer parameters, variadic arguments, callbacks, and recursion—and delves into the C preprocessor, covering directives, macro definitions, operators, and practical macro examples for safer and more expressive code.
This article explains the syntax and execution semantics of while(1) and for(;;) in C, compares their generated assembly code, and demonstrates through a practical gcc compilation that both constructs produce identical machine code for an infinite loop.
This article explains C language operators—including arithmetic, assignment, increment/decrement, comparison, logical, bitwise, comma, and ternary operators—covers operator precedence and associativity, and provides detailed examples of conditional and loop statements such as if/else, switch, for, while, and do/while constructs.
This article explains C variables and constants, their three components, key differences, how to define symbolic constants with #define, use the const keyword, understand various scopes, the static storage class, and the distinction between declarations and definitions, all illustrated with code examples.
This article explains C enumeration and union types, covering their definitions, common use cases, declaration syntax, variable creation, usage in switch statements and loops, and demonstrates how to access and correctly use union members with clear code examples.
This article provides a comprehensive guide to C structures, covering declaration, variable definition, typedef aliases, initialization methods, pointer usage, member access, memory layout, nested structs, and bit fields, complete with code examples and visual illustrations to help readers understand and apply these concepts effectively.
This comprehensive guide explains C arrays, their ordered and indexable nature, how to define, initialize, and access both one‑dimensional and multidimensional arrays, explores pointer arrays and array pointers, demonstrates passing arrays to functions, returning array pointers, and covers essential string handling functions such as strcpy, strlen, strcmp, and strncmp.
This article explains C's value semantics versus reference semantics, introduces pointers as the bridge between them, details pointer definitions, types, operators, and common pitfalls such as null, dangling, and wild pointers, and demonstrates pointer arithmetic with clear code examples.
This article provides a comprehensive overview of C language data types, covering basic, derived, pointer, void, and derived types, their memory sizes, value ranges, signedness, platform‑dependent variations, and related keywords such as sizeof, size_t, and fixed‑width uintX_t types.
This tutorial explains how to call C and C++ code from Python by compiling source files into shared libraries, using the ctypes module to load and invoke functions, and demonstrates both simple C functions and C++ class methods with complete code examples and compilation instructions.
GaiaX’s cross‑platform expression module uses a C++ LR(1) parser with lexical, syntax and semantic analysis to bind data, support arithmetic and functions, unify values via GXValue, bridge iOS and Android through JNI, and achieves sub‑millisecond execution for simple and nested expressions.
The article explains Linux’s Virtual File System (VFS) as an interface layer that treats all objects as files, illustrates the concept with Java‑style interface examples, then details the underlying C structures—file, file_operations, dentry, inode—and shows how the kernel links them to enable diverse file systems.
This article explains how C++ implements runtime polymorphism through virtual function tables, analyzes the memory layout of single‑ and multiple‑inheritance classes using gcc and gdb, and clarifies the role of thunks and offset adjustments for correct virtual calls.
At the end of 2022 the NSA warned that C and C++ are unsafe and urged a shift to languages like Rust or Go, but Bjarne Stroustrup counters that modern C++ offers robust static analysis, type and resource safety, and that the agency’s view overlooks these advances.
Creator of C++ Bjarne Stroustrup counters the NSA’s recommendation to replace C/C++ with memory‑safe languages, arguing that modern C++ has evolved with robust safety features, static analysis, and guidelines that can ensure type and resource safety without abandoning the language.
The article explains how to integrate Flutter‑based Windows applications by encapsulating native functionality in a modular C++ XModule framework—using macro‑generated providers, a global ModuleCenter, and CMake‑configured libraries—while managing all third‑party dependencies with vcpkg and private registries to ensure clean architecture and maintainable cross‑platform code.
This tutorial explains the difference between \r and \n, the role of line buffering in C, and shows step‑by‑step code—including a countdown and a full‑screen progress bar—using printf, fflush, sleep/usleep, and multi‑file project structure on Linux.
This article explains GaiaX’s cross‑platform expression engine, covering its design, LR(1) grammar‑based parsing, syntax‑tree construction, C++ core implementation, Android JNI and iOS bridge integration, unified data types, performance benchmarks, and how it ensures consistent, high‑performance UI rendering on mobile devices.
This article examines how high‑performance sorting functions such as C's qsort() and Java's Collections.sort() are implemented, compares suitable algorithms, analyzes merge sort versus quicksort, and presents practical optimizations like median‑of‑three pivots, random pivots, recursion depth limits, and hybrid insertion sort.
This tutorial explains the difference between \r and \n, line buffering, and how to use fflush and usleep to create a live updating progress bar and countdown timer in a Linux C program, complete with multi‑file implementation and sample code.
This article compares PyInstaller and Nuitka for converting Python projects into executables, highlighting Nuitka's dramatically smaller output size, faster build and startup times, and provides step‑by‑step installation and command‑line usage instructions.
The TIOBE Index named C++ the 2022 Language of the Year, highlighting its market‑share surge, the rise of Rust and other languages, and expert opinions on why C++ remains a high‑performance choice despite growing competition from newer languages.
The article shares a developer’s journey from Android app development to framework development, detailing motivations, environment setup, daily tasks, challenges, essential skills, and a structured learning roadmap for mastering Android’s system layers.
This article introduces the fundamentals of the Base64 encoding algorithm, explains its role in reverse‑engineering and security scenarios, details the encoding and decoding processes, and provides complete Java and native C++ implementations with code examples for Android development.
While(1) and for(;;) both create infinite loops in C, but this article explains their syntactic forms, execution semantics, and demonstrates through compiled assembly that they generate identical machine code, highlighting subtle differences and confirming they are functionally equivalent.
This article explains what Unix signals are, categorizes reliable and unreliable signals, describes how they are generated by hardware and software, and details registration, blocking, pending states, handling functions, and common usage examples with C code.
This article explains what Unix signals are, categorizes reliable and unreliable signals, describes how they are generated by hardware and software, and details registration, blocking, pending states, handling functions, and practical code examples for custom signal processing.
The article explains how glibc’s default ptmalloc allocator structures memory into main and non‑main arenas, uses chunk‑based bins (fast, unsorted, small, large) for allocation and deallocation, details its locking and OS‑interaction mechanisms, and evaluates its design trade‑offs versus modern allocators.
The latest TIOBE programming language index shows Java falling to fourth place for the first time since 2001, C++ surpassing Java for the first time, while Kotlin and Julia climb toward the top‑20, accompanied by detailed charts and a discussion of upcoming annual language awards.
The TIOBE December 2022 ranking shows C++ overtaking Java for the first time, Python and C remaining dominant, Java falling to fourth, and several languages such as SQL, Swift, and R moving up, while the index’s methodology and full listings are explained for developers and tech decision‑makers.
This guide introduces Ryujinx, an open‑source Nintendo Switch emulator written in C#, outlines its development history and compatibility stats, and provides three clear steps—installing .NET 7 SDK, cloning the repo, and building the project—to get the emulator up and running.
This open‑source C++ mock framework leverages Frida‑gum to replace any function—including static, member, virtual, and library calls—at runtime without source changes, offering simple MOCK and MOCK_RETURN macros, call‑count expectations, automatic scope‑based rollback, and cross‑platform support for reliable, non‑intrusive unit testing.
The article argues that for most developers, especially those from ordinary schools, learning C++ is costly and inefficient, while Go can be mastered quickly and aligns better with current hiring demands that prioritize practical backend skills and project experience.
This guide explains C pointers, covering their definition, basic syntax, pointer arithmetic, multi‑level pointers, the relationship between pointers and multi‑dimensional arrays, and the distinction between array pointers and pointer arrays, supplemented with clear code examples and visual analogies.
This article explains how to use GDB watchpoints to monitor specific memory locations in C/C++ programs, demonstrates setting hardware watchpoints, shows example code with a thread modifying a variable, and details the underlying CPU debug registers that enable real‑time detection of memory reads and writes.
This article explains what Unix signals are, categorizes reliable and unreliable signals, describes how they are generated by hardware and software, and provides detailed examples of registration, blocking, pending states, and custom handling using C functions such as kill, sigprocmask, sigaction, and signal.
The article profiles Joe Fitzsimons, founder and CEO of Horizon Quantum Computing, detailing his vision to bridge traditional software development with quantum computing by creating an IDE that lets C and C++ programmers build quantum applications, and compares Horizon's approach with competitors while outlining future industry use cases.
The November TIOBE ranking reveals Python, C, Java, and C++ maintaining top positions with steady growth, while Rust holding 20th place, and languages like Ruby, Swift, and Visual Basic declining, and Fortran falling out of the top 20, highlighting shifting trends in programming language popularity.
This tutorial walks you through using Dart's foreign function interface (FFI) in Flutter, showing how to create a macOS plugin project, generate bindings with ffigen, call native C/C++ functions, handle callbacks and asynchronous threads, and integrate message passing between Dart isolates and native code.
The article examines Google’s Carbon language as a modern successor to C++, discussing its goals, design principles, interoperability with existing C++ code, and how it compares to other successor languages like Rust, Kotlin, and TypeScript.
The article examines the open‑source Perspective library—originating from J.P. Morgan’s FinOS—and its multi‑language architecture that combines C++/WASM, Rust, JavaScript, and Python to deliver high‑performance, framework‑free data visualizations for real‑time financial analytics, highlighting its use of Apache Arrow, Web Components, and Jupyter integration.
This article details the investigation and resolution of a MySQL 8.0.21 client segmentation fault on CentOS 8.4, covering missing ncurses libraries, implicit function declaration warnings, pointer truncation on 64‑bit systems, core‑file generation, gdb analysis, and the steps required to rebuild the client without crashes.
This tutorial explains the difference between newline and carriage‑return, the three buffering modes of stdio, and shows step‑by‑step C code that uses fflush, format specifiers, and a custom loop to create a live console progress bar and countdown timer.
This article outlines essential practices for secure software development, covering Microsoft's Security Development Lifecycle, Visual Studio security features, and comprehensive secure coding guidelines—including safe APIs, SafeInt library usage, trust boundaries, type casting, and file operation safeguards—to reduce vulnerabilities such as buffer overflows and memory errors.
This article explains the purpose and proper use of C++'s virtual keyword, illustrating how virtual functions enable polymorphism, detailing class memory layout with vtables and vptrs, comparing performance impacts, and outlining when virtual functions and destructors are truly necessary.
Microsoft Azure CTO Mark Russinovich announced that developers should cease launching new C/C++ projects and consider Rust for non‑GC scenarios, prompting a robust defense from C++ creator Bjarne Stroustrup highlighting recent safety improvements and sparking widespread community debate.
This article explains how C/C++ function pointers work, demonstrates their compiled address, shows why they lack context, introduces a closure struct to bundle code with data, and relates this pattern to C++'s std::function for storing callables with captured environment.
Ladybird, an open‑source cross‑platform browser created by SerenityOS author Andreas Kling, evolved from a LibWeb debugging tool into a full GUI browser, leveraging SerenityOS’s LibWeb, LibJS, and Qt, and currently runs on Linux, macOS, Windows (WSL) and Android, though still early‑stage.
This article explains how to use LLVM's clang-format and clang-tidy tools for C/C++ code formatting and static analysis, covering Docker images, binary installations, and integration into development workflows via GitHub Actions and pre‑commit git hooks to enforce consistent code quality.
This article explains Netty’s reactor‑based asynchronous architecture, compares classic multithread, select, poll and epoll models, demonstrates JNI integration with C code, and provides a complete hand‑written epoll server example to illustrate high‑performance backend networking in Java.
The new Rainbow Braces extension for Visual Studio highlights matching brackets in customizable colors, helping developers quickly identify code blocks, reduce syntax errors, and improve navigation across languages like C#, JavaScript, and TypeScript.
This article explains Netty’s high‑performance asynchronous architecture, the evolution of I/O multiplexing models from select to poll and epoll, demonstrates Java‑C integration via JNI with detailed code examples, and provides a complete hand‑written epoll server in C for achieving million‑connection concurrency.
Google unveiled the experimental Carbon language at the CPP North conference, positioning it as a C++ successor with modern syntax, safety features, and seamless C++ interoperability, while industry leaders debate its readiness, purpose, and potential impact on the programming ecosystem.
Following the recent .NET Conf, this article outlines the key C# 11 enhancements—including generic math support, required class members, and raw string literals—explaining their purpose, usage, and the upcoming .NET 7 release schedule, while also noting community reactions and future .NET 8 LTS plans.
This guide introduces CodeQL, explains how to install the required tools, shows how to generate a source‑code database, and walks through basic and advanced rule syntax with practical C/C++ examples, enabling security researchers to efficiently discover vulnerabilities in large codebases.
Facing heavy GC overhead and slow model inference in a Java compute service, the authors explore using Java Native Interface to offload file loading and regression calculations to C++, detailing environment setup, Maven integration, native method implementation, common pitfalls, performance testing with JMH, and achieving up to 80% latency reduction.
This article examines the historical origin of the ++ and -- operators, explains why they were introduced, demonstrates that modern compilers no longer gain performance from them, and argues that functional‑style design, iterator‑based loops, and operator‑overloading concerns have led many contemporary languages to remove or deprecate these operators.
The article details a large‑scale C++ team's unit‑testing workflow, explaining why tests matter, how they set up cross‑platform macOS/Linux environments, adopt Google gtest/gmock with a custom Frida‑based mock, enforce coverage via gcov/lcov, compute incremental coverage, integrate Valgrind, follow deterministic test design principles, avoid common pitfalls, and embed the stable pipeline into CI gates and notifications.
The QianNiu PC cross‑platform framework adopts a COM‑style component architecture—defining interfaces, implementations, and MVP‑based UI modules, with automated code generation and lifecycle management—to achieve consistent Windows/macOS features, improve extensibility and reusability, lower development cost, and boost maintainability and efficiency.
Over three years the team built a lightweight, C++‑based cross‑platform messaging SDK for a large e‑commerce group, choosing C++ for performance, creating a custom 43‑KB/116‑KB foundation library, organizing five modular layers, employing a pure‑asynchronous thread model, and automating development with the Eyas scaffolding, language‑binding generation and unified GN builds to simplify multi‑OS deployment and reduce engineering effort.
The article details Redis’s core low‑level data structures—Simple Dynamic Strings (SDS) with length‑aware headers, a custom doubly linked list for O(1) head/tail access, and a hash‑table dictionary employing MurmurHash, incremental rehashing, and packed headers to optimize memory and performance across versions.
This article introduces CodeSmith, a template‑driven code generation tool, explains why code generators improve efficiency and consistency, demonstrates how to write and reuse templates—including Java bean generation and data‑type conversion—and shares practical tips for automating model, SQL, and UI code creation.
This article provides a comprehensive analysis of libunifex's core concepts—including Sender, Receiver, TypedSender, OperationState, Scheduler, and Structured Concurrency—explaining how they interact to enable lazy, composable asynchronous operations in modern C++.
This article compiles a curated list of popular backend development frameworks across various programming languages, detailing each framework’s key features, advantages, and typical use cases to help developers choose the right tool for modern web applications.
The June 2022 TIOBE index shows Python still leading, while C++ is poised to surpass Java into the top three, reflecting shifting popularity among programming languages and highlighting the impact of performance and language evolution on developer choices.
Microsoft announced a proprietary C# extension for Visual Studio Code to replace the open‑source OmniSharp, sparking criticism from developers like Miguel de Icaza, while promising tighter integration with Visual Studio features, raising concerns about .NET openness and the future of VS Code's C# tooling.
This article explains why traditional select and poll struggle with many file descriptors, how epoll redesigns the workflow by registering descriptors once via epoll_ctl, the kernel data structures (eventpoll, epitem) that manage events, and walks through the core functions epoll_create, epoll_ctl, epoll_wait, and their callbacks.
This timed programmer quiz combines single‑choice, short‑answer, and coding problems that test a broad spectrum of IT topics—from programming history and algorithms to Linux commands, networking layers, Helm chart concepts, and practical Python and C coding tasks—providing a holistic assessment of technical fundamentals.
This comprehensive C/C++ knowledge base covers everything from basic syntax, const, static, and this pointers to advanced topics like inline functions, virtual methods, smart pointers, STL containers, data structures, algorithms, operating system concepts, networking layers, and common interview problems, complete with code examples and diagrams.
This article examines how PHP stores variables internally by analyzing the zval structure defined in the C source code, detailing its fields, type flags, memory layout, and associated macros, and explains why each variable occupies 16 bytes at runtime.
The article details OMAX’s end‑to‑end platform for large‑scale C/C++ service compilation, covering optimization flags, profile‑guided and link‑time techniques, Facebook BOLT post‑link tuning, and real‑world results that cut CPU use, latency and deployment time while shrinking binary size.
This article explores why the naïve (a + b) / 2 formula overflows for 32‑bit unsigned integers and presents several safe techniques—including subtraction‑first, bitwise‑based, wide‑type casting, and carry‑rotate instructions—complete with C++ code and assembly examples.
This article introduces the fundamentals of heterogeneous computing on mobile GPUs, explains OpenCL concepts and its programming model, and provides a step‑by‑step example of adding two arrays with complete OpenCL code for Android devices.
The article presents a Filament‑based PBR material editor that unifies PC and mobile workflows by providing real‑time ImGui previews, JSON‑driven persistence, model optimization, texture compression, and export/import of mobile‑ready material packages, thereby lowering authoring barriers, accelerating iteration, and ensuring visual consistency across platforms.
Meituan Search solves costly multi‑language maintenance by building a core C++ library, wrapping it with a C interface, and exposing the functions to Python via ctypes and to Java via JNI or JNA, enabling shared logic, easier packaging, and lower latency on Linux.
This article explains how the Linux kernel’s likely and unlikely macros, which wrap GCC’s __builtin_expect, guide branch prediction to improve cache utilization and pipeline efficiency, and demonstrates their impact with sample code and assembly analysis.
The long‑standing Chinese Windows utility PDF Patcher, known for its extensive PDF editing capabilities, has been open‑sourced on GitHub, revealing its C# and C codebase, .NET Framework foundation, iText and MuPDF dependencies, and a unique “Conscience License” that adds moral obligations for users and developers.
The article dissects Linux’s epoll I/O multiplexing, tracing the flow from socket creation with accept through epoll_create, epoll_ctl registration, and epoll_wait sleeping, detailing the kernel’s eventpoll object, red‑black tree, per‑socket wait‑queue callbacks that enable O(log N) registration and O(1) event delivery for tens of thousands of connections.
This article compiles a curated list of major C and C++ security and coding guidelines—including 360 Safe Rules, Tencent Security Guide, Huawei Secure Coding Specification, Google C++ Style Guide, C++ Core Guidelines, SEI CERT, MISRA, and High Integrity C++—providing brief descriptions and direct repository links for each.
This guide shares practical C++ cross‑platform development tips, covering version selection, include guards, path handling, character encoding, inline functions, type definitions, template usage, compiler differences, and build‑time strategies to keep code portable and maintainable across Windows, macOS, and Linux.
This article examines how the memory size of C enum types varies with declared value ranges and compiler options such as -fshort-enums, showing default and shortened sizes across different compilers and illustrating the impact of adding larger constant values.
This article explains how to implement a console progress bar and countdown timer in C by covering carriage returns, newline handling, output buffering strategies, and the use of fflush to force immediate screen updates, complete with sample code and visual demonstrations.
This article explains how C# source generators introduced in .NET 5/6 can analyze compile‑time metadata and automatically generate HttpClient implementation classes, register them in the DI container, and handle multi‑project assembly analysis for streamlined API consumption.
This article explains InnoDB's lock system in MySQL, covering lock granularity, intent, shared, exclusive and auto‑increment locks, row‑lock types, the underlying C++ structures, lock mode and type encoding, and the compatibility and strength matrices that govern lock acquisition and waiting.
This article provides a step‑by‑step technical guide to implementing C++ stackful coroutines, covering the design of the owl.context API, low‑level context‑switch principles, register saving conventions on 32‑bit ARM, and complete source code for co_getcontext, co_setcontext, co_swapcontext and co_makecontext with illustrative examples and diagrams.
This guide explains the differences between carriage return and newline, explores C output buffering strategies, and provides step‑by‑step C code to create a countdown and a dynamic progress bar that updates smoothly in the terminal.
This article provides a detailed source‑code walkthrough of Envoy's outbound request processing, explaining how the proxy receives client data, parses HTTP requests, selects routes and clusters, forwards traffic upstream, handles retries and shadowing, and finally returns responses to downstream clients.
This tutorial explains how to create a console progress bar in C by covering newline versus carriage return handling, output buffering strategies, using fflush to force screen updates, and adapting the code for multi‑digit countdowns.
Linux kernels 3.9+ introduce the SO_REUSEPORT option, allowing multiple processes to bind and listen on the same port, with the kernel handling load‑balancing and security checks; this article explains the problem it solves, the underlying implementation, and provides practical C examples and verification steps.
This article provides an in‑depth analysis of Envoy's outbound request processing, covering listener initialization, the use of SO_REUSEPORT for load distribution, original destination handling, and the detailed steps of connection creation and filter chaining within the Envoy proxy architecture.
This article explains the purpose and behavior of the Thread.Sleep function in .NET, clarifies common misconceptions about its timing and effects, and relates it to operating‑system scheduling concepts such as time‑slice and preemptive multitasking.
This article walks through Redis’s annotated source code to explain how its single‑threaded architecture initializes the server, loads configuration and data, and continuously processes file and time events within a while‑loop, revealing why Redis achieves high performance without spawning additional worker threads.
This article surveys the programming languages and technologies underlying a wide range of operating systems, user interfaces, desktop tools, databases, browsers, servers, and other software, illustrating how C, C++, Java, and other languages dominate different components across the software ecosystem.
This guide outlines practical best‑practice recommendations—such as using C++17, proper header guards, forward‑slash paths, UTF‑8 encoding, restrained inline functions, standard fixed‑width types, careful char handling, readable nested templates, conditional compilation, Clang compiler, thin conversion layers, custom asserts, composition over inheritance, safe static initialization, and limited template use—to help developers write portable, maintainable, efficient C++ code across Windows, macOS, Linux, desktop and mobile platforms.
This article demonstrates how to create a basic FTP‑like file transfer application in C using Windows Winsock, covering both server and client implementations, handling file size negotiation, data transmission loops, and compilation steps, with complete source code examples.
The long‑standing Windows PDF Patcher tool, known for its rich PDF editing capabilities, has finally been open‑sourced on GitHub, revealing its C# and C codebase, .NET Framework foundation, development environment, project structure, and a unique “Conscience License” that encourages charitable giving.
This article explains how WeChat Pay tackled inconsistent iOS and Android implementations by building a unified C++ cross‑platform framework, introducing UseCase‑based business flow, a routing mechanism, and improved network request handling, resulting in fewer bugs, faster development, and higher productivity.
The article explains how to design a C++‑based multithreaded service that uses Pthreads, channels, and TensorRT to parallelize deep‑learning inference tasks, thereby reducing latency and dramatically increasing throughput for AI applications such as facial‑recognition access control systems.
