Learning Lua: Part 21 Using Metatables & Metamethods to simulate OOP in Lua: Matrix Addiction

Показать описание

Learn to program in Lua. Lua is a popular scripting language that is widely used by many app and game engines including Roblox, Solar2D, Core, Defold, Cocos2D, neovim, minetest, Amazon Lumberyard, moai, and many other great tools.

In Part 21, we continue learning about objects with the use of metatables and metamethods. This continues a subset of tutorials on OOP (object-oriented programming) and how to implement many OOP features in Lua. In this tutorial, Dr. Burton shows how to do matrix addition as a metamethod

Unlock the power of Lua programming with my latest book, "Learning Lua." Whether you're a beginner or an experienced coder, this comprehensive guide will take you on a journey to mastering Lua. Get your copy now:

Рекомендации по теме

Комментарии

just went thru the 21 parts ... Thanks a lot Dr.!

MyCenturion

Thanks Dr. Burton for explaining this complex topic in very simple and short videos, looking forward for the next ones

appdomus

Thank You!, This series is very well made I wonder why it doesn't receive more attention.

Kitsune_Dev

It seems like Lua is being used for things far beyond what was originally intended by the language creators. Perhaps there will be a "Lua 2" that includes proper OOP. If polymorphism, encapsulation, and inheritance were first-class language features, proper coding and debugging support would follow. Surely that would be preferable to the current collection of hack-like workarounds and missing features. (No reflection on your efforts here, of course)

agnichatian

Could you do a video on memory management?

RCdiy

Thanks for the tutorial. I did one experiment and associated the metatable __add method of myTable2 with a different method to see what will happen.

To my surprise it still worked as long as I was adding myTable1 + myTable2. However if I switch the places (myTable2+myTable1), then myTable2's __add function is called. So I guess one should be extra careful when using this.

Is there any practical value of having two different __add (or other operator) functions for different objects?

petarpetrov

Any idea why lua does not have a round() implementation? I know how to write my own.

RCdiy

What would be the difference between table["n"] = 5 and table.n = 5 ?

haakonpad

?? Why did not you debug by explaining the API commands

Niyzoky

we wait lua-c interaction lessons in detail.

mumin

Learning Lua: Part 21 Using Metatables & Metamethods to simulate OOP in Lua: Matrix Addiction

Learning Lua: Part 21 Using Metatables & Metamethods to simulate OOP in Lua: Matrix Addiction

An Adventure Game in C#, Python and Lua Part 21

Lua 5.2 Tutorial 20: The String Library Part 1

#21 One function to query all user input (LUA for GrandMA)

Learning Lua: Part 20-Metatables & Metamethods in Lua to Simulate OOP.

Lua 5.2 Tutorial 21: The String Library Part 2

Tutorial 21: Using LUA Scripts

Intro to Lua with Love2D

Embedding Lua in C++ #21 - Explaining Run Time Type Information

Stingray Engine Code Walkthrough #21: Lua

Learning Lua: How to use if - then (and else) in Lua scripting

Learning Lua: Part 2: Functions and Tables

Learning Lua: Part 16 Using Modules in Lua

Tutorial 3: Variables in Lua

Lua Scripting with REAPER 5 - Part. 9: Preventing Bugs

57 - Using a Class in Lua

22 - Using Operators in Lua

Learning Lua: Part 19 Using Objects in Lua

Learning Lua: Part 18 - Creating Recursion in Lua

21 - Operators in Lua

Lua Tutorial 21: The Debug Library

Lua in 100 Seconds

Using regex #lua

Learning Lua - Part 23: Using the Select Command in Lua