👉 Unapplicative is a mathematical concept in functional programming that describes a function that returns the value of its argument without applying any side effects or returning a new value. This means that if we want to return a result from a function, we need not explicitly modify the input variable and can simply use it as-is. The term "unapplicative" is often used in languages like Haskell and ML (TypeScript) to indicate that a function should not mutate its argument. For example: ```haskell
