February 2018
Intermediate to advanced
350 pages
7h 35m
English
Content preview from Functional Kotlin
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Checking for null
Check for null as a condition in the if block:
fun main(args: Array<String>) { val nullableCupcake: Cupcake? = Cupcake.almond() if (nullableCupcake != null) { nullableCupcake.eat() }}
Kotlin will do a smart cast. Inside the if block, nullableCupcake is a Cupcake, not a Cupcake?; so, any method or property can be accessed.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.