Test loading duplicate symbols in multi-DSOs, the symbols could be functions, global variables.

A minimum demo for creating Qt APP using vscode + cmake + ninja. See README first.

Learn how to use ffmpeg with HW accelerations, test using NVIDIA GPU.

测试使用三次样条曲线拟合离散点，并使用matplot-cpp绘制曲线。

比较 websocketPP 与 uWebSocket 两个三方ws库的性能。