MacOS 升级 Catalina 后,打开Adobe Air出现错误：“Adobe AIR.framework” is damaged and can’t be opened.

可以通过如下方式移除安全隔离属性

cd /Library/Frameworks
sudo xattr -r -d com.apple.quarantine ./Adobe\ AIR.framework

原理

使用 orm.RegisterDataBase 注册多个数据库，其中一个为default，且为主库.

ORM must register a database with alias default.

Employees and students often need to create attractive documents for presentations and text documents. Popular commercial software for creating great-looking documents includes PowerPoint, Keynote and Pages. PowerPoint is a Microsoft product, while Apple makes Keynote and Pages. While there are similarities between the three programs, there are also major differences. Choosing between the three when creating a document depends on your needs.

因为网络共享，看视频或下载的时候会占用大量带宽，导致网络卡顿，影响他人的使用。速度太快还会被网管断开连接(下载Xcode或更新时经常出现)。下面是搜索到的两种限制网速的方式。苹果官方提供了限制系统整体网速的Network Link Conditioner 和 OpenBSD’s Packet Filter 命令行工具。