Dart is a language for the web by Google which is object oriented with optional types. You can use Dart to build great apps for the client-side, server-side and command line. My story why I love Dart and why it makes me so much productive!

1. Let's play Dart!
Jana Moudrá @Janamou +JanaMoudra www.moudra.net
Juicymo
#dfua

2. Let's write a Web App...

3. No fairy tales today

4. What is Dart?
#dfua

5. Language
Easy to learn
Modular
Great tools

6. Language
Easy to learn
Modular
Great tools
Let's learn Dart in
a few minutes

7. class Person {
String name;
int age;
Person(this.name, this.age);
}
Person person = new Person("Peter", 18);
Easy to learn

8. class Person {
var name;
var age;
Person(this.name, this.age);
}
var person = new Person("Peter", 18);
Types are optional

9. var name; //is null
int count; //is null
Default value
no undefined in Dart

10. if (name is String) {
print("$name is String");
}
Checking types

11. Person person = new Person();
person.name = "Peter";
person.age = 18;
person.hairColor = "brown";
Normal developer life

12. Person person = new Person()
..name = "Peter"
..age = 18
..hairColor = "brown";
Hello .. operator

13. Me + Dart
=
Productivity
#dfua

14. Great docs
Tools and libraries
async/await
Null-Aware operators

15. pub

16. name: my_super_app
version: 0.1.0
description: My super application!
dependencies:
args: any
pubspec.yaml

17. name: my_super_app
version: 0.1.0
description: My super application!
dependencies:
args: any
pubspec.yaml
$ pub get
Resolving dependencies...
Got dependencies!

18. dart:async, dart:collection, dart:convert,
dart:core, dart:developer, dart:html, dart:indexed_db,
dart:io, dart:isolate, dart:js, dart:
math, dart:mirrors, dart:svg, dart:
typed_data, dart:web_audio,
dart:web_gl, dart:web_sql

19. HttpRequest
.getString("animals.json")
.then(feedAnimals);
Before async/await era

20. feedAnimals(await HttpRequest
.getString("animals.json"));
We can do it better

21. if (person != null) {
person.sayHello();
}
Null everywhere...

22. person?.sayHello();
Hello Null-Aware

23. person?.sayHello();
Hello Null-Aware
and that's not all...

24. Not only for
client side
#dfua

25. Not only for
client side
server side command line mobile
#dfua

26. Client side
Web Browser
Compiles to JavaScript
Lots of libraries

27. Server side
Dart VM
Lots of frameworks
Integration with databases
App Engine, Firebase etc...

28. Command line

29. On mobile?

30. On mobile
Fletch
Flutter

31. Fletch
Flutter
dartlang.org/mobile flutter.io
On mobile

32. Developer
Utilities
#dfua

33. Tests rule the world code
Package test
test("Person is Jana", () {
Person person = new Person("Jana");
expect(person.name, equals("Jana"));
});

34. Documentation for everything
/**
* [ProcessResult] represents the result of
* running a non-interactive process started with
* [Process.run] or [Process.runSync].
*/
class ProcessResult {

35. Dartdoc

36. Observatory is your best friend
Profiling Dart code
Code coverage
Debugging memory leaks
...

37. Observatory

38. That's not all!
Stagehand
dartfmt
Grinder
… and more on pub.dartlang.org

39. Why should I
use Dart?
#dfua

40. #IJSAWTC

41. I Just Sit
And
Write The Code!

42. I Just Sit
And
Write The Code!
for client for server for command line

43. Let's play Dart tomorrow
Dart Code Lab
Sat, 14:50 - 15:30, Community hall
#dfua

44. Jana Moudrá @Janamou +JanaMoudra www.moudra.net
Juicymo
Questions?
#dfua

45. Image credits
● Matthew Keefe, cc,
https://www.flickr.com/photos/60243770@N00/3123775954/
● Mari Wirta, cc
https://www.flickr.com/photos/64194626@N03/6292870807/
● jenny downing, cc, https://www.flickr.
com/photos/7941044@N06/3990391143/
● Kjetil Korslien, cc
https://www.flickr.com/photos/kjetikor/8484119632/
● Kārlis Dambrāns, cc
https://www.flickr.com/photos/janitors/16524906898