Organizing modules into packages

• Lua allows modules to be organized into packages
  • This is similar to the packages of Java
  • Folders are created with Lua files in them
  • The dot notation specifies the package hierarchy
  • It also specifies the folder hierarchy

An example of the code in a module

newModule = {} local masterTable = {} local i = 1 function newModule.addString(inputVariable) if type(inputVariable) ~= "string" then print("Error - input is not a string") else masterTable[i] = inputVariable i = i + 1 end end function newModule.printStrings() for j = 1, i-1 do print(masterTable[j]) end end return newModule

An example of using Lua modules and packages

local testModule = require "moduleSample" local anotherModule = require "modules.sample" testModule.addString("This is the first string") testModule.printStrings() anotherModule.addString("This is the first string from the modules package") anotherModule.printStrings()

Below is an image of Eclipse showing packages and modules