3. Control flow and functions

Control execution order and reuse logic with functions, imports and fragments. -> defines a script function, import loads a resource, and @@ calls a registered language executor.

• Control flow: execution, branches, assertions, return and exit.
• Functions: parameters, anonymous functions, outer variables and recursion.
• Imports and reuse: libraries and other DataQL scripts.
• Code fragments: executor names, parameters and batch calls.

var shipping = (amount) -> {
    if (amount >= 100) {
        return 0;
    }
    return 10;
};
return shipping(80);

The result is 10. Use result transformation or collection functions to process list items.