Lua Application Programming

https://hisham.hm/papers/talks/hisham-lap-luaconf2017.pdf

用Lua开发应用程序不仅仅要学习语言本身，包括运行环境，开发工具和部署工具等等。

A lot goes into writing an application:

• The language itself. Which version of Lua? (Does it matter?)
• The language environment. Platforms? Libraries? Frameworks?
• The development tools.Editors? Static checkers? Testing? CI?
• The deployment. How will users install and run your program?

如何让App更清晰简单呢？模块化！每个模块都可以单独拎出来做成lib, 但是不要这条路上走得太远。 另外做成lib思考方式可以让你避免使用太多技巧，这些技巧使得代码没有办法组合使用。

Library-oriented design:

• Structure as much of your application as possible as libraries:
  • Split concerns into libraries. Favor reusing existing ones
  • Don’t go overboard writing libraries. or you’ll never get to the app!
• Helps coding for collaboration – Well-defined programming interfaces – Well-defined responsibility boundaries
• Helps taming complexity – Divide and conquer – Each piece is small and simple!

Libraries avoid tricks:

• The library mindset helps you avoid tricks
• Avoid whenever possible: – Global metatable magic – Global variables – Global environment tricks – Debug library tricks – Implicit coroutine use
• These things do not compose