Module 01 · Lesson 02

Variables, numbers, strings

Last lesson you stored one piece of text in one variable. Now you will store several values, like a server name, slot count, and version number, then join them into one clean console line. This is your first real practice with numbers, the .. operator, and re-assignment.

You'll build: An upgraded qu_hello that prints a structured server info line: name, slots, version.
Time: ~15 minutes
You need: The qu_hello resource you built in Lesson 01, we're picking it up where it stopped.
You'll learn: Numbers and arithmetic -> strings vs numbers -> the .. concatenation operator -> type() -> comments -> re-assignment

BEFORE YOU START

Build it

Make the resource folder

The server has one folder for this lesson.

Inside your server's resources folder, create this folder:

text

resources/qu_variables_numbers_strings

Create the files

Every file named in the manifest exists.

Symptom	Fix
`Resource qu_variables_numbers_strings does not exist`	The folder name or the ensure line do not match. Check the folder sits directly inside resources and the ensure line spells the name identically.
`attempt to concatenate a nil value`	A variable in the .. chain was never assigned, usually a typo like serverNme. Lua treats an unknown name as nil, and you cannot concatenate nil. Check every name in the print line matches a local above it.
`attempt to perform arithmetic on a string value`	You put quotes around a number, like slots = '48', then tried to do math on it. Remove the quotes so it is a real number, or convert with tonumber() first.
`The line prints version=1 but you expected 1.0`	You wrote version = 1, an integer, not version = 1.0, a float. Add the .0 to store it as a float so the decimal shows in the text form.

Variables, numbers, strings

Build it

Make the resource folder

Create the files

Write fxmanifest.lua

Write the lesson code

Start it and read the proof

How it works

Variables hold values, and values have a type

The .. operator joins values into one string

Why version prints as 1.0, and why type() says number for both

Comments and re-assignment

When you reach for this

If something went wrong

What you can do now

Run it live

Try it yourself