Creating Dictionaries

Part of the Fundamentals section of Coddy's GDScript journey. Lesson 77 of 92.

An array stores values by position. A dictionary stores values by name: each value is paired with a key, and you use the key to find the value.

Write a dictionary with curly braces. Each pair is a key, a colon and a value, and commas separate the pairs:

var player := {"name": "Mia", "hp": 100, "alive": true}
print(player)

The output shows every pair, with a space after { and before }:

{ "name": "Mia", "hp": 100, "alive": true }

Each key can appear only once in a dictionary, but values can repeat. Writing the same key twice in {} is an error that stops the program before it runs. Keys and values can be of any type: strings, numbers, booleans or even arrays.

An empty dictionary is written {}. You can add pairs to it later:

var scores := {}
print(scores) # {  }

Like arrays, dictionaries can be typed. Dictionary[String, int] means every key is a String and every value is an int:

var stock: Dictionary[String, int] = {"apples": 3, "pears": 5}

Challenge

Easy

The program reads three lines of input:

A hero name
A role
A level (a whole number)

Create a dictionary called hero with three pairs:

"name" mapped to the hero name
"role" mapped to the role
"level" mapped to the level, stored as an int

Then print the dictionary. For the inputs Mia, Healer and 3, the output is:

{ "name": "Mia", "role": "Healer", "level": 3 }

Try it yourself

extends Node

func _ready():
	var hero_name := OS.read_string_from_stdin()
	var role := OS.read_string_from_stdin()
	var level := int(OS.read_string_from_stdin())

	# Create the hero dictionary here

	# Print the dictionary here