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Declaring an Array

Part of the Fundamentals section of Coddy's GDScript journey. Lesson 62 of 92.

An array stores several values in one variable, in order. You create it with square brackets [] and separate the values with commas:

var items := [1, "two", 3.5, true]

A plain array can hold values of different types, like the int, string, float and boolean above. An empty array is a pair of brackets with nothing inside:

var inventory := []

print() shows the whole array, with strings in quotation marks:

var fruits := ["apple", "pear"]
print(fruits)
["apple", "pear"]

The size() method returns how many elements an array holds. You call it with a dot after the array:

var items := [1, "two", 3.5, true]
print(items.size())
4

An array can also hold other arrays. size() counts only the top-level elements, so [[1, 2], [3, 4, 5]] has a size of 2.

challenge icon

Challenge

Easy

Create a shopping list.

Put the strings bread, eggs, milk and butter, in this order, inside the brackets of shopping_list. The two print() lines are already written, so the program prints:

["bread", "eggs", "milk", "butter"]
4

Try it yourself

extends Node

func _ready():
	# Put the four items inside the brackets
	var shopping_list := []
	print(shopping_list)
	print(shopping_list.size())
quiz iconTest yourself

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

All lessons in Fundamentals

1Introduction

The LanguageHello World!CommentsBasic Program Structure

4Operators Part 1

Arithmetic OperatorsInteger DivisionModulo OperatorArithmetic ShortcutsRecap - Simple MathComparison Operators

7Basic IO

OutputOutput With VariablesString FormattingInputCastRecap - Till 120Recap - True or False

10Functions

Declare a FunctionArgumentsReturnReturn TypesRecap - Sigma FunctionRecap - Validation FunctionDefault Values

13Iterating Over Arrays

Iterating Over ElementsIterating With IndexesIterating Over Strings Part 1Iterating Over Strings Part 2

16Daily Expense Tracker

Project OverviewExit The ProgramProject lessonAdd ExpenseProject lessonView All ExpensesProject lessonTotal And AverageProject lessonClear AllProject lessonHandling ErrorsProject lesson

2Variables Part 1

NumbersStringBooleanEmpty VariablesNaming Conventions

5Operators Part 2

Logical Operators Part 1Logical Operators Part 2Recap - Simple LogicLogical Operators Part 3Ternary Operator

8Bill Split Calculator

Welcome MessageGetting InputProject lessonCalculating The Tip And TotalProject lessonSplitting The BillProject lessonFormatted OutputProject lesson

11FizzBuzz with a Twist

Game OverviewThe FizzBuzz FunctionProject lessonLooping The NumbersProject lessonAdding The TwistProject lesson

14Arrays Advanced

Array SlicingSequence OperatorsMembershipSort And Reverse

17Final Challenges

Flat Asterisk PyramidPattern FinderWhat To Buy

3Variables Part 2

Type DeclarationType InferenceConstantsRecap - Initialize VariablesType Casting

6Decision Making

If StatementIf - ElseRecap - Simple CalculatorNested If - ElseMatch Statement

9Loops

For LoopWhile LoopBreakContinueRecap - FactorialThe Range FunctionNested LoopRecap - Dynamic Input

12Arrays Basics

Declaring an ArrayAccessing Array ElementsModifying ArraysArray MethodsRecap - Product ArrayRecap - Reversed ArrayTyped Arrays

15Dictionaries

Creating DictionariesAccessing ValuesModifying DictionariesDictionary MethodsIterating Over DictionariesRecap - Inventory Dictionary

Practice on your own: Online GDScript compiler