Mastering Kotlin

Limitations of vararg

The vararg parameters are convenient, but they have some caveats:

• A function may only have a single vararg parameter.
• It's generally a good practice to make a vararg parameter the last parameter for a function.

Defining multiple vararg parameters will result in a compiler error, as in the following example:

// this will not compile// Error: "Multiple vararg-parameters are prohibited"fun helloFunctions(vararg nums: Int, greeting: String, vararg names: String) {    ...}

It's generally a good idea to make a vararg parameter the last parameter in your function, especially if there are other arguments of the same type present. To illustrate why this is important, we can use the following helloFunctions example:

fun helloFunctions ...