void in Java and Void in Haskell are quite different. As the post explains, in Haskell it’s a type with no possible values. In Java, the equivalent would be a class without a constructor (not sure if that’s even possible). It defines a type, but you cannot construct a value or object with that type. The equivalent of Java‘s void in Haskell is the unit type () which has exactly one possible value, also called (). It can be returned by a function, but it does not give you any information, just like void. By the way, Rust also uses the unit type instead of void.
You do have a Void type in Java if you really must specify a return type and don’t want to return anything e.g. services and their tasks in JavaFx. The Task must have a return type thus you can use Void if the task doesn’t actually return anything.
confused java dev: what do you mean a function can’t return void???
voidin Java andVoidin Haskell are quite different. As the post explains, in Haskell it’s a type with no possible values. In Java, the equivalent would be a class without a constructor (not sure if that’s even possible). It defines a type, but you cannot construct a value or object with that type. The equivalent of Java‘s void in Haskell is the unit type()which has exactly one possible value, also called(). It can be returned by a function, but it does not give you any information, just like void. By the way, Rust also uses the unit type instead of void.You do have a
Voidtype in Java if you really must specify a return type and don’t want to return anything e.g. services and their tasks in JavaFx. The Task must have a return type thus you can use Void if the task doesn’t actually return anything.yeah that was the joke, thanks for explaining it