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openFrameworks is a community-developed cross platform toolkit for creative coding in C++.
How to Make a Computer Operating System in C++
DevOps Guide - Development to Production all configurations with basic notes to debug efficiently.
🌟 Wiki of OI / ICPC for everyone. （某大型游戏线上攻略，内含炫酷算术魔法）
程序员在家做饭方法指南。Programmer's guide about how to cook at home (Simplified Chinese only).
A Versatile Framework for Modeling and Simulating Biological Cognitive Decision-Making Processes Using the Temporal Difference Algorithm
用标准c语言开发的常用数据结构和算法基础库，作为应用程序开发接口基础库，为编写高性能程序提供便利，可极大地缩短软件项目的开发周期，提升工程开发效率，并确保软件系统运行的可靠性、稳定性。
C Matrix library for OpenGL apps. A port of the gl-matrix JavaScript library.
A lib of Matrix operation for C language. (矩阵运算库--C语言)
A Record of The Methods of Optimization.（最优化方法及其实现）C语言
Breeze quadcopter flight control station can implement the real-time monitoring and control on the computer client.
🗃 JSON parser and builder for ESP8266, ESP32, Teensy3.x and Teensy4.x, SAM, SAMD and STM32 (128 k flash or more)
MiaoUI 是一个基于 u8g2 的单色 OLED 菜单 UI 框架。MiaoUI使用 C 语言实现，采用双向链表结构，使用非线性动画、移植方便、内存占用较小、能够快速部署，适用于具有小型OLED屏幕的嵌入式设备。
A GPS bicycle speedometer that supports offline maps and track recording
A wonderful list of Game Development resources.
Protected Low-overhead Object Oriented Programming with ANSI-C