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Kotlin @ Java Day Voronezh

Presented on Oct 27, 2012
by

Andrey Breslav

on 4 April 2013

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Transcript of Kotlin @ Java Day Voronezh

Зачем by Светлана Исакова
Николай Красько Kotlin Java Java Kotlin Java Kotlin Timeline 2012 M1 M2 M3 Beta Использование в Spec & Release (v. 1.0) Примеры Hello, world!
Classes
Extension Functions
Higher-Order Functions
Operator Overloading
Null-Safety
Smart Casts
Annotations Builders Type-Safe Java Platform Making a Better Place Home Page: kotlin.jetbrains.org
Web Demo: kotlin-demo.jetbrains.com
Blog: blog.jetbrains .com/kotlin Twitter:
@project_kotlin Open Source Kompiler
IntelliJ IDEA Plugin http://github.com/JetBrains/Kotlin Apache 2 License Kontribute Patches
Libraries
Tools Recently Contributed Collection & IO
utilities by James Strachan Resources Smart Cast Safe Calls Data Flow Nobody likes NPEs... Ant & Maven by Evgeny Goldin Почему не... ... Почему 1/2 Компилятора X ≈ 3.5 Компилятора If... If you are happy with you don't need Kotlin Swahili Rename
on
import Annotations
as
modifiers More Traits (code in interfaces)
First-class delegation
Modules
Generics with proper variance
... http://kotlin.jetbrains.org Цели
Выразительность 100% Java-совместимость Статическая типизация Хорошая поддержка в IDE Простота изучения! http://github.com/jetbrains/kotlin Apache 2 License Open Source http://github.com/jetbrains/kotlin Современный язык программирования Kotlin это... для Выразительный Нет лишнего кода Больше возможностей абстрагировать повторяющийся код Выведение типов
Функции - объекты первого рода
Расширения (extensions)
... Читать код приходится гораздо чаще, чем писать 2.5 MLOC
10 лет
30 коллег Groovy Scala Ceylon Многое сильно поменялось с конца 90-х... индустрии Лаконичный но не Java
Лаконичность Быстрая компиляция Forum: Kotlin at devnet.jetbrains.com Examples Code: https://github.com/abreslav/introduction-to-kotlin https://github.com/abreslav/introduction-to-kotlin
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