Aaron Barrett aab29

aab29 / main.dart

Created July 11, 2018 19:33

Using Dart's generator functions to calculate the blended color values in a horizontal gradient

	class Color {
	final double red;
	final double green;
	final double blue;

	const Color(this.red, this.green, this.blue);

	static double blendedChannel(double leftChannel, double rightChannel, double progress) =>
	leftChannel * (1.0 - progress) + rightChannel * progress;

aab29 / main.dart

Created July 10, 2018 19:13

An example of how concise you can make your constructor code in Dart

	class City {

	String name;
	String countryName;
	int population;
	bool isCapital;

	City(this.name, this.countryName, this.population, {this.isCapital = false});

	@override

aab29 / main.dart

Last active July 6, 2018 20:37

Showing off Dart's two syntaxes for optional arguments: optional named arguments and optional positional arguments.


	enum SheepSoundLength {
	short,
	medium,
	long
	}

	const LettersCountBySheepSoundLength = const {
	SheepSoundLength.short : 1,
	SheepSoundLength.medium : 3,

aab29 / main.dart

Last active July 6, 2018 20:36

Demonstrating the power of Dart's cascade syntax with an arbitrarily intricate Sentence class.

	enum SentencePurpose { declarative, imperative, interrogative, exclamatory }

	const endPunctuationByPurpose = const {
	SentencePurpose.declarative: ".",
	SentencePurpose.imperative: ".",
	SentencePurpose.interrogative: "?",
	SentencePurpose.exclamatory: "!"
	};

	const underWaterSoundsByCharacter = const {

aab29 / main.dart

Last active July 6, 2018 20:40

A silly simulation of a boat picking up cargo boxes at a port to demonstrate Dart's fat arrow syntax

	import "dart:math";

	class Port {
	static final randomGenerator = new Random();
	static const cargoNames = const [
	"guano",
	"fuzzy dice",
	"weasles",
	"bubble wrap",
	"shoelaces",

aab29 / main.dart

Last active July 6, 2018 20:35

Dart's syntax is very familiar

	void main() {

	var familiarLanguages = ["C", "C++", "Objective-C", "C#", "Java", "JavaScript"];

	print("Welcome to Dart!");

	for (var language in familiarLanguages) {
	print("If you know $language, you already know most of Dart.");
	}