Exploring Useful Kotlin Features

The article explores some useful features of Kotlin that may not be known to everyone. One such feature is type aliases, which provide alternative names for existing types. This is particularly useful when the type name is too long, allowing developers to introduce a shorter name and use it instead. Type aliases can be used to shorten long generic types, as well as provide new names for inner and nested classes. It's important to note that type aliases do not introduce new types, but are equivalent to the corresponding underlying types. For example, when using the typealias Predicate and passing Predicate, the Kotlin compiler expands it to (Int) -> Boolean. This allows developers to easily pass variables of their own type whenever a general function type is required and vice versa. These features can greatly enhance code readability and maintainability in Kotlin projects.