NavanithanS After: guard clauses
if not user: return False if not user.is_active: return False if not user.has_permission('edit'): return False
logic
## Extract Function
```javascript
// Before: all-in-one
function handleOrder(order) { /* validate, calc, discount */ }
// After: composed
function handleOrder(order) {
validateOrder(order);
const subtotal = calculateSubtotal(order.items);
return applyDiscount(subtotal, order.discountCode);
}