Kit de ferramenta no Kotlin

Apresentação para trabalhar com estrutura de dados utilizando Kotlin

segue o github do código da apresetação
https://github.com/rviannaoliveira/PresentationKitToolsKotlin

Transcript

1. Kit de ferramentas no Kotlin Rodrigo Vianna @rviannaoliveira
2. Motivação
3. Coleções em java • List • Set • Map • Collections • Iterable • ArrayList • LinkedList • HashSet • TreeSet • HashMap • TreeMap Interfaces Classes
4. Coleções em java Comparator/Comparable HashCode Equals
5. Kotlin var = Mutavel ( Mutable ) val = Imutável ( Immutable )
6. Kotlin var pode ter get e setters?
7. Kotlin val pode ter get e setters?
8. Kotlin "Immutable objects are particularly useful in concurrent applications. Since they cannot change state, they cannot be corrupted by thread interference or observed in an inconsistent state." https://docs.oracle.com/javase/tutorial/essential/concurrency/immutable.html
9. Mutáveis ( Mutable ) • MutableIterable • MutableCollection • MutableList • MutableSet • MutableMap Imutáveis ( Immutable ) •Iterable •Collection •List •Set •Map Coleções
10. val list: kotlin.collections.List<String> = java.util.ArrayList() Lembrete: Collection no Kotlin não possui métodos add e remove Kotlin
11. Array val heroes = arrayOf("Captain America", "Iron Man", "Spider Man") heroes[2] = "Hulk" assertEquals("Hulk", heroes[2])
12. Sintaxe Java 8 Streams API Java 6 +- 7 Kotlin RxJava
13. Extensões fun String.separeSpaceWithComam():List<String>{ return this.split(" ",",") }
14. Tipo de Extensões Filtros Agregação Map Geração Ordenação
15. Tipos de Functions Aggregate operations any all count fold/foldRight *forEach/forEachIndexed *max/maxBy min/minBy none reduce/reduceRight sumBy Filter operations drop/dropWhile/dropLastWhile *filter/filterNot/filterNotNull slice take/takeLast/takeWhile *distinct distinctBy Mapping operantions flatMap groupBy ap/mapIndexed/mapNotNul Generation operations merge partition *plus zip Ordering operations *reverse *sort/sortBy/sortDescending/sortDes
16. Montar meme 1
17. Standard functions /** * Calls the specified function [block] with `this` value as its receiver and returns `this` value. */ @kotlin.internal.InlineOnly public inline fun <T> T.apply(block: T.() -> Unit): T { block(); return this } let with run apply also
18. Montar meme 2 https://ask.ericlin.info/post/003-kotlin-std-method-differences/
19. Montar meme 2
20. Conclusão
21. Referências https://www.codementor.io/jussihallila/introduction-to-kotlin-part-2-9oybmr9rb https://docs.oracle.com/javase/tutorial/essential/concurrency/immutable.html https://www.tutorialspoint.com/java/java_collections.htm https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/ https://kotlinlang.org/docs/reference/collections.htm https://hackernoon.com/kotlin-a-deeper-look-8569d4da36f https://android.jlelse.eu/kotlin-collections-example-c1c446a4846c http://beust.com/weblog/2015/10/30/exploring-the-kotlin-standard-library/
22. Rodrigo Vianna OBRIGADO https://github.com/rviannaoliveira @rviannaoliveira https://github.com/rviannaoliveira/PresentationKitToolsKotlin
23. https://www.99jobs.com/zap-s-a-internet