Iterating Over Strings Part 2

Part of the Fundamentals section of Coddy's GDScript journey. Lesson 72 of 92.

The split() method cuts a string at every occurrence of a separator and returns the pieces as an array:

var data := "john,25,new york"
var parts := data.split(",")
print(parts)

["john", "25", "new york"]

The result is a PackedStringArray, a compact array that holds only strings. You index it, loop over it and print it like any array: parts[1] is "25".

When the separator appears several times in a row, split() returns empty strings between them. Pass false as a second argument to leave the empty pieces out:

print("I   love   coding".split(" "))
print("I   love   coding".split(" ", false))

["I", "", "", "love", "", "", "coding"]
["I", "love", "coding"]

The join() method does the opposite: it is called on the separator string and combines the elements of an array of strings into one string:

var words := ["Hello", "World", "Godot"]
print(" ".join(words))
print(",".join(words))

Hello World Godot
Hello,World,Godot

Challenge

Easy

The program reads two lines: a text and a separator.

Split text into words at the spaces. Words can be separated by several spaces, and there can be spaces at the start or the end: leave the empty pieces out.
Join the words with separator and print the result.

For the inputs Hello world godot and -, the output is:

Hello-world-godot

Try it yourself

extends Node

func _ready():
	var text := OS.read_string_from_stdin()
	var separator := OS.read_string_from_stdin()
	# Write your code below

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 Basic Program Structure

4Operators Part 1

Arithmetic Operators Integer Division Modulo Operator Arithmetic Shortcuts Recap - Simple Math Comparison Operators

7Basic IO

Output Output With Variables String Formatting Input Cast Recap - Till 120 Recap - True or False

10Functions

Declare a Function Arguments Return Return Types Recap - Sigma Function Recap - Validation Function Default Values

13Iterating Over Arrays

Iterating Over Elements Iterating With Indexes Iterating Over Strings Part 1Iterating Over Strings Part 2

16Daily Expense Tracker

Project Overview Exit The Program

2Variables Part 1

Numbers String Boolean Empty Variables Naming Conventions

5Operators Part 2

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

8Bill Split Calculator

Welcome Message Getting Input

Calculating The Tip And Total

Splitting The Bill

Formatted Output

11FizzBuzz with a Twist

Game Overview The FizzBuzz Function

Looping The Numbers

Adding The Twist

14Arrays Advanced

Array Slicing Sequence Operators Membership Sort And Reverse

17Final Challenges

Flat Asterisk Pyramid Pattern Finder What To Buy

Practice on your own: Online GDScript compiler