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Simple AArch64 Bare Metal

• Toolchain： Arm GNU Toolchain Downloads
• About rdimon.spec: nosys nano rdimon

C code example:

#include <stdio.h>
int main() { printf("Hello world!\n"); }

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Systemd Service File

Commands:

• Restart Systemd Daemon: systemctl daemon-reload
• Enable Service: systemctl enable qbittorrent

Reference

• Linx Man: man systemd.service
• systemd 编写服务管理脚本

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Simple Any Implementation

A simple implementation of 'any' type in c++11.

refer to cnblogs.com/qiconmos/p/3420095.html

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C++ Simple Range

A simple Range class for int with c++ range-based for statement supported. (or c++ foreach statement) (aka. minimal code to support c++ foreach/range-based-for)

As we know from this example, to support range-based for we need:

1. container/custom-class has begin() end() method, which return a iterator or something else.
2. iterator has implemented operators:
3. not-equal operator !=, which is bool operator !=(T&)
4. pre-increment operator ++, which is T operator ++()

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Common Data Structure

Common Data, which contains value (bool/integer/string), array (list), map (dict). CDS is used to handle JSON/YAML/TOML data in c++.