Чому я почав писати на Kotlin. Що там прикольного і чим мій код на РНР подібний на Kotlin. https://phpfriends.club/meetups-5.html

1. How PHP developer use
Kotlin
1

2. Autoline.ua
PHP/ Kotlin
Full stack -> backend
Love Automation
2
How PHP developer
use Kotlin
@funivan

3. Agenda
How I get there
Cool features
Same code in .php & .kt
Result
3
How PHP developer
use Kotlin

4. Php ~> Java
PhpStorm Plugin
● Internal
● Completion
● GoTo
4
2014

5. LoloGA
● AI
● Genetic Algorithm
5github.com/funivan/lologa
2017
Php ~> Java

6. Automatically convert
.java to .kt
6
2017
Java ~> Kotlin

7. Kotlin +1
Type inference
Lambda
Default and named
arguments
Easy to build DSL
7

8. Kotlin +1
Type inference
Lambda
Default and named
arguments
Easy to build DSL
8

9. Kotlin +1
Type inference
Lambda
Default and named
arguments
Easy to build DSL
9

10. Kotlin +1
Type inference
Lambda
Default and named
arguments
Easy to build DSL
10

11. Kotlin +1
Type inference
Lambda
Default and named
arguments
Easy to build DSL
11

12. 12
Rule 0: Small interfaces

13. 13
Rule 0: Small interfaces

14. 14
Rule 0: Small interfaces

15. 15
interface ClientActionInterface {
public function execute(Client $client) : bool;
}
class LoggableClientAction {
// string $message, Logger $logger, Action $origin
public function execute(Client $target){
$this->logger->log($message)
$this->origin->execute($target);
}
}
Rule 1: Decorator one love

16. 16
Rule 1: Decorator one love

17. 17
class Complicated8To8Board(gameplay: GameplayInterface)
: Board(gameplay, 8, 8,
Cycled<Color>(
Shuffled<Color>(
ListOf<Color>(
GREEN, RED, BLUE, YELLOW, VIOLET
)
)
),
Tiles().with(Tile(BLUE, Position(5, 1))).with(Tile(BLUE, Position(5, 1)))
.with(Tile(BLUE, Position(5, 2))).with(Tile(BLUE, Position(6, 2)))
.with(Tile(BLUE, Position(5, 3)))
)
Rule 2: Object thinking

18. 18
$clients = new FilteredClientsList(
new AllOfClientConstraint(
new ManagerNotesClientConstraint(
new IntEqual(0), new CurrentMonthConstraint(), ['Pyment']
),
new ManagerStatusClientConstraint('Online'),
),
new ActiveClientsList()
);
Rule 2: Object thinking

19. 19
// Possible moves
override fun perform(tiles: TilesInterface): TilesInterface {
var result: TilesInterface = Tiles()
for (tile in tiles.all()) {
val bottom = MaxBottom(tile).find(tiles)
if (!result.has(bottom.position())) {
val connected = AllConnectedFinder(bottom).perform(tiles).size()
if (connected >= this.num) {
result = result.with(bottom)
}
}
}
return result
Rule 3: Small Methods

20. Effect
20
1. Plugin - increase productivity
2. New languages? Easy!
3. Interesting work

21. Effect
21
1. Plugin - increase productivity
2. New languages? Easy!
3. Interesting work

22. Effect
22
1. Plugin - increase productivity
2. New languages? Easy!
3. Interesting work

23. Thanks
PhpClean
https://github.com/funivan/PhpClean
Kotlin spec
https://kotlinlang.org/
Kotlin book
Kotlin in action
23
@funivan