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kotlinlang

Is there a way to create static extension function to existing class?

Only if the class had a companion object
```
fun String.Companion.two(string: String) = string + string

val s = String.two("foo")
```

Out of curiosity, what would be the purpose of creating a static extension function?

Doesn't pollute the autocompletion and works with classes not under your control

Just remember that if the class isn't under your control, it has to have a Companion defined already, or this won't compile.

:yes: <https://twitter.com/kotlin/status/1194655130576019456>