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Zero-Arg Shorthand

When a function takes no arguments, func uses a compact positional form:

(func get-timestamp (Date:now))
(func get-pi (3.14159))
(func create-user-id ((crypto:random-UUID)))

function getTimestamp() {
  return Date.now();
}

function getPi() {
  return 3.14159;
}

function createUserId() {
  return crypto.randomUUID();
}

The parenthesized body expression is both the body and the implicit return value. No :args, no :returns, no :body — just the function name and a single expression in parentheses.

This is syntactic sugar for the common pattern of a named function that computes and returns a value with no inputs. You’ll encounter it throughout the book for simple accessor and factory functions.