The 'run' function in Kotlin is a scope function that allows you to execute a block of code within the context of an object. It is useful for performing operations on an object and returning a result without the need for an explicit reference to the object. This can lead to cleaner and more concise code, especially when initializing or configuring objects.
val user = User().run { name = "Alice" age = 30 address = "123 Main St" this // returns the User object } println(user) // User(name=Alice, age=30, address=123 Main St)