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kotlinlang

I have this function
```    fun findProfile(user: UserDocument, vararg fields: String) { ... }
```
I'd like to make the vararg parameter required, because if I call that method like `userService.findProfile(user)` it doesn't complain.
Any idea?

minimum number of arguments in a vararg is `0`, so no, you can't make it work like you want, except checking args length and throwing an `IllegalArgumentException`.
What you can do (I know it's not very beautiful) is:
```
fun findProfile(user: UserDocument, firstField: String, vararg additionalFields: String) { ... }
```
This will force your users to supply at least one field. And will look similar to what you want at the call site.