How do I return two values in Haskell?

Yes, you can return multiple values with a haskell construct called a tuple. If you’re working in a monad with and using a do block, you can also pattern match using a prettier form. Notice that this has to be in a do block.

Can you return multiple values in OCaml?

It is impossible in OCaml, and more importantly, we do not want to have it in OCaml.

How u will return multiple values in a method?

Returning Multiple values in Java

1. If all returned elements are of same type.
2. If returned elements are of different types.
3. Using Pair (If there are only two returned values) We can use Pair in Java to return two values.
4. If there are more than two returned values.
5. Returning list of Object Class.

What is cons in Haskell?

Anyway, Cons is just the constructor name — it is an arbitrary name. You can use data List a = Foobar a (List a) …. and name it Foobar , if you wish. Cons is a historic name, though, originating from Lisp. :-: is another arbitrary name for the constructor, except that it can be used infix.

Are OCaml lists mutable?

Variables in OCaml are never mutable—they can refer to mutable data, but what the variable points to can’t be changed. Sometimes, though, you want to do exactly what you would do with a mutable variable in another language: define a single, mutable value.

How many values can a method return?

You can return only one value in Java. If needed you can return multiple values using array or an object.

Can a method have multiple return statements?

Multiple return statements in a method will cause your code not to be purely object-oriented. Here you’ll find an example where you can use a clean OOP approach instead of using multiple returns. All arguments in favor of multiple return statements go against the very idea of object-oriented programming.