Kotlin keywords have been categorised into three broad categories: (a) Hard Keywords (b) Soft Keywords (c) Modifier KeywordsĪs a good programming practice, it is highly recommended not to use any of the mentioned keywords to name any identifiers while coding in Kotlin. At compile time, Room automatically generates implementations of the DAOs that you define. Each DAO includes methods that offer abstract access to your app's database.
Main.kt:5:21: error: keyword cannot be used as a reference When you use the Room persistence library to store your app's data, you interact with the stored data by defining data access objects, or DAOs. First, there can only be one vararg parameter in a function definition. There are a few things that you should keep in mind about the vararg parameter. Behind the scenes, this list of arguments will be wrapped into an array. Main.kt:2:7: error: expecting property name or receiver type The vararg modifier allows callers to pass in a comma-separated list of arguments.
When you run the above Kotlin program, it will generate the following output: Var fun = "Zara Ali" // Not allowed, throws an exception Kotlin uses fun keyword to define a function, so if we we will try to use it as a variable name then it will be an exception.
These words cannot be used as an identifier (variables names, package names, function names etc.) and if used then compiler will raise an exception. Public void displayParam(String.Kotlin keywords are predefined, reserved words used in Kotlin programming that have special meanings to the compiler. To pass the list to the method displayParam(), which accepts variable arguments, we are using toArray() method to convert the list to an array as shown in the following example. In this example, we have a list of string elements. Passing a List elements to a method with Varargs parameter Here, we will see how a list elements can be passed as arguments to a method. As we learned in the Java Varargs detailed guide, that varargs can accept variable arguments. In this guide, you will learn how to pass a list as an argument to a method with Varargs.
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