String Concatenation

Part of the Fundamentals section of Coddy's Lua journey. Lesson 15 of 90.

The string concatenation operator represented by two dots .. allows you to join two or more strings together to create a new, longer string.

Here's how string concatenation works:

firstName = "John"
lastName = "Smith"
fullName = firstName .. " " .. lastName    -- fullName is "John Smith"

greeting = "Hello, " .. "World!"          -- greeting is "Hello, World!"

Notice that concatenation doesn't automatically add spaces between strings - you need to include them explicitly. In the example above, we added " " between the first and last name to separate them with a space.

Challenge

Easy

Create a player's full name by combining their first name and last name using string concatenation. Create two variables: firstName with the value "Alex" and lastName with the value "Hunter". Use the concatenation operator to combine these strings with a space between them, storing the result in a variable called fullName. Print the full name.

Try it yourself

-- Create variables for first name and last name
-- TODO: Write your code here

-- Print the full name
print(fullName)

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Fundamentals

1Introduction

The Language Hello World!Comments

4Operators 2 Relational & Logic

Equality Operators Relational Operators The 'and' Operator The 'or' Operator The 'not' Operator Short-Circuit Evaluation Truthy and Falsy Values Recap - Simple Logic

7Basic Conditional Logic

The if-then Statement The if-then-else Statement The elseif Statement Recap - Treasure Chest

10Tables Part 1: List-Style

What is a Table?Creating a Table Accessing Elements by Index Modifying Elements by Index The Length Operator '#'table.insert()table.remove()Recap - Manage Party Members

13Project: Simple Potion Shop

Project Setup Adding a Potion

Displaying the Inventory

Calculating Total Stock Value

Finding a Specific Potion

Selling a Potion

3Operators 1 Arithmetic & Conc

Arithmetic Operators Modulo Operator Exponentiation OperatorString ConcatenationOperator Precedence Recap - Simple Calculations

6Project: Character Stats Disp

Welcome Message Declare Character Stats

Display Basic Stats

Add a Boolean Flag

Final Summary

9Functions Basics

Declaring a Function Calling a Function Functions with Parameters Functions with Multiple Params The 'return' Statement Recap - Area Calculator

12Loops Basics

The while Loop The repeat-until Loop The Numeric for Loop for Loop with a Step The 'break' Statement Recap - Countdown

15Final Challenges

Recap - Player Turn Recap - Simple Database Recap - Sum of Even Numbers

Practice on your own: Online Lua compiler