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SPRING BOOT AND KOTLIN, A MATCH MADE IN HEAVEN@NICOLAS_FRANKEL
@nicolas_frankel #kotlin #springboot
SWITZERLAND
@nicolas_frankel #kotlin #springboot
SWITZERLAND
@nicolas_frankel #kotlin #springboot
SWITZERLAND
@nicolas_frankel #kotlin #springboot
ME, MYSELF AND I Developer/Software
-/Solution Architect• Java• As consultant
@nicolas_frankel #kotlin #springboot
HYBRIS, AN SAP COMPANY
@nicolas_frankel #kotlin #springboot
@nicolas_frankel #kotlin #springboot
@nicolas_frankel #kotlin #springboot
WHY SPRING BOOT?Convention over configuration• Kickstart a project in minutes,
not daysOut-of-the-box features•Actuator
@nicolas_frankel #kotlin #springboot
KOTLIN
@nicolas_frankel #kotlin #springboot
Open SourceCompiles to• JVM bytecode• JavaScript (experimental)
A "simpler Scala"
@nicolas_frankel #kotlin #springboot
KOTLIN MAIN FEATURES
@nicolas_frankel #kotlin #springboot
Functional and object-orientedStatically typedNull safetyNo checked exceptionsNamed & optional argumentsLambdasExtension functionsJava compatibility(And more...)
@nicolas_frankel #kotlin #springboot
KOTLIN MAIN BENEFITS
@nicolas_frankel #kotlin #springboot
More expressive than JavaImproved OOFunctional too
HELLO KOTLIN!package hello // no semicolons
// namespace-level functions// types on the right// no special syntax for arrays// optional return typefun main(args: Array<String>) { println("Hello Kotlin!")}
@nicolas_frankel #kotlin #springboot@nicolas_frankel #kotlin #springboot
@nicolas_frankel #kotlin #springboot
THE KILLER FEATURE: EXTENSIONSExtension methodsExtension properties
@nicolas_frankel #kotlin #springboot
EXTENSION METHODAdd new methods on an existing typeCalled like a method on the typeTranslated to static Util method in the bytecode
@nicolas_frankel #kotlin #springboot
ENOUGH TALK…
Time for DEMO
@nicolas_frankel #kotlin #springboot
SPRING BOOT KOTLIN INTEGRATIONKotlin integration OOTBCode more terseJava configuration files less verbose
@nicolas_frankel #kotlin #springboot
ENOUGH TALK…
Time for DEMO
@nicolas_frankel #kotlin #springboot
MY PROJECTMigrating my WordPress blog to Jekyll• From one single XML export• To a Markdown file per post
@nicolas_frankel #kotlin #springboot
TYPICAL BATCH SCENARIORead• XML file
Transform• Add image size• Replace links• Etc.
Write• Markdown files
@nicolas_frankel #kotlin #springboot
HIGHLIGHTSExpression body methodsMany one-liners into one fileExpression properties
@nicolas_frankel #kotlin #springboot
KEY TAKEAWAYS
@nicolas_frankel #kotlin #springboot
Q&A
http://blog.frankel.ch/@nicolas_frankel http://frankel.in/https://git.io/vVSLG
