Lua Fundamentals Training Course

Introduction to Lua

• A brief historical overview
• Design goals, key features, and non-goals
• Essential documentation and tutorial resources
• Installation of the Lua interpreter
• Setup and utilization of LuaRocks

Basic syntax and semantics

• Identifier rules
• Single-line and block comments
• Global variables and strict mode enforcement
• Local variable scoping
• Standalone program execution and arguments
• Compilation units, chunks, expressions, and semicolons

Data types and data structures

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

Exploring tables and their versatility

• Using tables as associative arrays
• Using tables as numeric arrays or sequences

Basic control structures

• Conditional logic: if, then, elseif, else, end
• While loops
• Repeat loops
• Basic for loops

Error handling

• Comparison of return values versus exceptions
• Converting return values into exceptions
• Converting exceptions into return values
• Error level management

Example programs

• Evaluating polynomials
• Breadth-first search implementation
• Supplementary practice exercises

Advanced function concepts

• Named parameters
• Object-oriented invocation styles
• Closures
• Currying techniques
• Tail call optimization
• Multiple assignment and return values
• Variable-length arguments (varargs)

Iterators and co-routines

• The generic for loop mechanism
• Stateless versus stateful iterators
• Distinguishing iterators from co-routines

Metatables and metamethods

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

Modules and packages

• Utilizing existing modules
• Developing custom modules
• Organizing modules into packages

Object-oriented programming

• Core OOP building blocks in Lua
• Practical examples

Discussion on more advanced language features

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