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kotlinlang

Given a function with a default argument, is there a way to call it with its default argument? I want to write a wrapper function for it while preserving the default argument value. Basically this, but without the if
```fun foo(arg1: Int, arg2: Int = 42){ ... }

fun wrapper(arg1: Int, arg2: Int? = null){
    if (arg2 == null)
        foo(arg1)
    else
        foo(arg1, arg2)
}```

Possible with reflection, using `callBy`, but I wouldn't recommend that as a solution here

Do you expect people to pass `null`, or is that just a placeholder? You could use overloads, if you just need a 1-arg version and a 2-arg version:
```fun wrapper(arg1: Int) = foo(arg1)
fun wrapper(arg1: Int, arg2: Int) = foo(arg1, arg2)```

<https://youtrack.jetbrains.com/issue/KT-18695>