Question

Is let f = fun x -> e or let f x = e syntactic sugar?

Answer 1

In OCaml, let bindings can take two forms: let f = fun x -> e or let f x = e. Both forms define a function called f, with the first form known as the functor syntax and the second form known as the function syntax.

Step-by-step explanation:

Let bindings in functional programming languages like OCaml and Haskell are used to bind a value to a variable. In OCaml, the syntax for let bindings can take two different forms:

1. let f = fun x -> e: This form is known as the functor syntax and is used to define a function that takes an argument x and evaluates to an expression e.
2. let f x = e: This form is known as the function syntax and is used to define a function that takes an argument x and evaluates to an expression e.

Both forms are equivalent and can be used interchangeably, with the function syntax being more commonly used for defining functions in OCaml.