Lua Fundamentals Training Course

Introduction to Lua

• Historical context
• Objectives, features, and non-goals of Lua
• Accessing Lua documentation and tutorial resources
• Installation of the Lua interpreter
• Configuration and usage of LuaRocks

Core syntax and semantics

• Identifier rules
• Comments and block comments
• Global variables and enforcing strictness
• Local variables
• Standalone execution and program arguments
• Compilation units, chunks, expressions, and semicolons

Data types and structures

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

Table fundamentals and versatility

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

Essential control structures

• Conditional logic: if, then, elseif, else, end
• The while loop
• The repeat loop
• The basic for loop

Error management

• Return values versus exceptions
• Transforming return values into exceptions
• Transforming exceptions into return values
• Error levels

Practical applications

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

Advanced function concepts

• Named parameters
• Object-oriented invocation
• Closures
• Currying
• Tail calls
• Multiple assignment and return values
• Varargs

Iterators and coroutines

• The generic for loop
• Stateless versus stateful iterators
• Distinctions between iterators and coroutines

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 modules
• Building modules
• Structuring modules into packages

Object-oriented programming

• Foundations of OOP in Lua
• Practical examples

Exploration of advanced language features

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