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kotlinlang

Hi guys,
```fun foo(s: String = "") = "hello $s"

fun bar(a: String?) {
   foo(a ?: "")
}```
In the above code is there a way for us to use the default value for the parameter in case `a` is null, instead of repeating the default value in `bar`?
This way, we don’t rely on what the default value of `foo` is within `bar`

```
fun foo(s: String? = null) = "hello ${s ?: ""}"
```

Thats fair, except that the example above is a simplification of code where `foo` and `bar` couldn’t be coupled like this.

If you have additional requirements then please state them. You could also do:
```
fun foo(s: String = "") = "hello $s"

fun bar(a: String?) {
   if (a != null) foo(a) else foo()
}
```