15.7 Declaring Default Function Parameters
Kotlin provides the ability to designate a default parameter value to be used in the event that the value is not provided as an argument when the function is called. This simply involves assigning the default value to the parameter when the function is declared.
To see default parameters in action the buildMessageFor function will be modified so that the string “Customer” is used as a default in the event that a customer name is not passed through as an argument. Similarly, the count parameter is declared with a default value of 0:
fun buildMessageFor(name: String = "Customer", count: Int = 0): String {
return("$name, you are customer number $count")
}
When parameter names are used when making the function call, any parameters for which defaults have been specified may be omitted. The following function call, for example, omits the customer name argument...