![]() ![]() So, you can only use a switch to perform an action when one specific variable has a certain precise value. En Kotlin, Any type representa el supertipo de todos los tipos que no aceptan valores NULL. However it cannot replace all sort of if/else sequences but just those which compare a value with some constant. public inline fun Iterable.filter( predicate: (T) -> Boolean ).One of the most useful improvement, especially if you come from Java, is the when construct.Ī traditional switch is basically just a statement that can substitute a series of simple if/else that make basic checks. Iterable processing, on the other hand, returns a collection like List on every step. Behind every course is a bona fide Spring superstar. Kotlin is full of these pragmatic improvements, getting its user a language that just feel good to use. Weve got experienced educators, expert Spring developers, and even members of the Spring team itself. ![]() In Kotlin the Any type represents the super type of all non-nullable types. ![]() This means that you can't call toInt () directly on value because it doesn't know that it contains a String at compile time, even though it does at runtime. Object is the root of the class hierarchy in Java, every class has Object as a superclass. There are two kinds of innovation: new perspectives that changes how we look at things and pragmatic improvements that changes how we do things. The reason you must cast to a String first is because toInt () is an extension method on String, and value is of type Any. ![]()
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