Make extension method / property available globally

Question

In Kotlin you can define extension methods and properties for existing classes:

operator inline fun Vector2.plus(other: Vector2) = Vector2(x + other.x, y + other.y)

This allows one to do this:

val result = Vector2(1.1f, 2.3f) + Vector2(2f, 4f)

Is there any way I can make this extension global so that I don't have to import this in every class that uses this?

Answer 1

You cannot do that, because extension methods are resolved statically by the compiler.

Without an import, the compiler does not know about the extension.