Kotlin is a general purpose, free, open source, statically typed “pragmatic” programming language initially designed for the JVM (Java Virtual Machine) and Android that combines object-oriented and functional programming features. It is focused on interoperability, safety, clarity, and tooling support.
Read moreWhat is in and out in Kotlin?
If you ever defined generic in Kotlin, you’ll notice many a times, it would propose to use the in or out keyword to define the generic. It puzzles me at a start on when which is used, and for what. Formally, this is a way to define contravariance and covariant.
Read moreWhat is Kotlin most used for?
Kotlin can be used for any kind of development, be it server-side, client-side web and Android . With Kotlin/Native currently in the works, support for other platforms such as embedded systems, macOS and iOS is coming.
Read moreWhat does in do in Kotlin?
It turns out the Kotlin in keyword is shorthand for the operator contains . It’s not an interface or a type, just the operator. If we wanted to make a custom type to check if a value is in our type, all we need to do is add the operator contains() .18 Şub 2020
Read moreHow do you do a for in Kotlin?
Kotlin for loop is equivalent to the foreach loop in languages like C#.
Read moreWhat does ?: Mean in Kotlin?
length ?: -1. If the expression to the left of ?: is not null , the Elvis operator returns it, otherwise it returns the expression to the right . Note that the expression on the right-hand side is evaluated only if the left-hand side is null .
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