Category "type-inference"

In OCaml, what is the difference between `'a.` and `type a.` and when to use each?

OCaml has several different syntaxes for a polymorphic type annotation : let f : 'a -> 'a = … (* Isn’t this one already polymorphic? (an

JDK 11.0.2 compilation fails with javac NPE on anonymous parameterized class type inference

Code (spring-web 5.1.2) public static void main(String[] args) { RestTemplate restTemplate = new RestTemplate(); HttpHeaders headers = new HttpHeaders

How to get type inference using a utility type, or type parameter, when I extend the built-in array class?

Defining types for Class-member's in an Extended Array Class So below, you can see that I extend the array class via the WillyWonka class. The problem is, when

How do I index only the property names from another object, but leave values to be inferred?

I have the following example joi validation schema const joiUser = { firstName: joi.string().required(), // inferred type: joi.BoxStringSchema<joi.Box<

OCaml explicit type signatures

In Haskell, it is considered good practice to explicitly declare the type signature of your functions, even though it can (usually) be inferred. It seems like t