WebScala Book The if/then/else Construct Outdated Notice This page has a new version. A basic Scala if statement looks like this: if (a == b) doSomething () You can also write that statement like this: if (a == b) { doSomething () } The if / else construct looks like this: if (a == b) { doSomething () } else { doSomethingElse () } WebAug 8, 2024 · Note that there is nothing in the Scala spec that demands it throw a ClassCastException at any point. When an asInstanceOf is supposed to be successful, then Scala must not throw. But if it is not supposed to be successful, Scala can do whatever it …

scala - What is difference between Null, Nil and Nothing

WebApr 2, 2024 · Scala Nothing Type It is a trait in Scala. Being a trait it does not have any instance, and is contained by every data set but is not a superclass. Nothing has found uses in functions that always return an exception to handle. Scala Nil Type It is a list that has no element. Nil uses nothing as it is a subset. Nil's type is list [nothing]. WebNothing is a subtype of every other type (including scala.Null ); there exist no instances of this type. Although type Nothing is uninhabited, it is nevertheless useful in several ways. For instance, the Scala library defines a value scala.collection.immutable.Nil of type List [Nothing]. Because lists are covariant in Scala, this makes scala ... can i buy a house in canada as a us citizen

The if/then/else Construct Scala Book Scala Documentation

WebThis chapter takes you through the conditional construction statements in Scala programming. Following is the general form of a typical decision making IF...ELSE structure found in most of the programming languages. Flow Chart The following is a flow chart diagram for conditional statement. if Statement WebApr 25, 2024 · If a subclass has the method name identical to the method name defined in the parent class then it is known to be Method Overriding i.e, the sub-classes which are inherited by the declared super class, overrides the method defined in the super class utilizing the override keyword. Flow chart of method overriding WebThis is cool for several reasons, including the fact that it means that Scala doesn’t require a special “ternary” operator. Aside: Expression-oriented programming As a brief note about programming in general, when every expression you write returns a value, that style is referred to as expression-oriented programming , or EOP. can i buy a house in mexico