Lua Fundamentals Training Course

Introduction to Lua

• Historical background
• Lua's objectives, key features, and excluded goals
• Accessing Lua documentation and tutorial resources
• Installing the Lua interpreter
• Setting up and utilizing LuaRocks

Basic Syntax and Semantics

• Identifier rules
• Comments and block comments
• Global variables and enforcing strict mode
• Local variables
• Running standalone programs and handling command-line arguments
• Compilation units, chunks, expressions, and semicolons

Data Types and Structures

• Primitive types: nil, boolean, number, and string
• Object types: function, userdata, thread, and table
• Distinguishing between references/objects and primitive values
• The critical role of tables in Lua

Understanding Tables and Their Versatility

• Tables functioning as associative arrays
• Tables acting as numeric arrays and sequences

Control Structures

• Conditional statements: if, then, elseif, else, end
• While loops
• Repeat loops
• Standard for loops

Error Handling

• Distinguishing between return values and exceptions
• Transforming return values into exceptions
• Transforming exceptions into return values
• Understanding error levels

Example Programs

• Evaluating polynomials
• Implementing breadth-first search
• Additional practice exercises

Advanced Function Concepts

• Named arguments
• Object-oriented method calls
• Closures
• Currying
• Tail calls
• Multiple assignment and return values
• Varargs

Iterators and Coroutines

• The generic for loop
• Differences between stateless and stateful iterators
• Key distinctions between iterators and coroutines

Metatables and Metamethods

• Using sets as an example
• The __tostring metamethod
• Arithmetic metamethods
• The __index and __newindex metamethods
• The __len metamethod

Modules and Packages

• Implementing modules
• Creating custom modules
• Organizing modules into packages

Object-Oriented Programming

• Core components of OOP in Lua
• Practical examples

Advanced Language Features

• Weak tables
• Finalizers
• Compilation, evaluation, and loading