Discussion on: My favourite Kotlin features

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Kotlin is probably my favorite language I've worked in at length ^^

I really like not needing to specify a class variable three times:

// Java
class Circle {
    private Double radius;
    public Circle(Double radius) {
        this.radius = radius;
    }
}

// Kotlin
class Circle(private val radius: Double)

Luke Garrigan • Aug 9 '21

Ahh yes, definitely. This is one of those laborious tasks that has been subtly hidden from view with tooling. So used to writing a field and having my IDE generate the constructor for me. That's a good one.

Jean-Michel 🕵🏻‍♂️ Fayard • Aug 9 '21

Actually it's 9 times

// Java
class Circle {
    private Double radius;
    public Circle(Double radius) {
        this.radius = radius;
    }
    Double getRadius() { return radius }
    void setRadius(Double radius) { this.radius = radius }
}