January 2018
Beginner to intermediate
312 pages
7h 22m
English
Content preview from Domain Modeling Made Functional
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Reviewing the Domain Model
Let’s review the domain model that we created previously:
| | context: Order-Taking |
| | |
| | // ---------------------- |
| | // Simple types |
| | // ---------------------- |
| | |
| | // Product codes |
| | data ProductCode = WidgetCode OR GizmoCode |
| | data WidgetCode = string starting with "W" then 4 digits |
| | data GizmoCode = ... |
| | // Order Quantity |
| | data OrderQuantity = UnitQuantity OR KilogramQuantity |
| | data UnitQuantity = ... |
| | data KilogramQuantity = ... |
| | |
| | // ---------------------- |
| | // Order life cycle |
| | // ---------------------- |
| | |
| | // ----- unvalidated state ----- |
| | data UnvalidatedOrder = |
| | UnvalidatedCustomerInfo |
| | AND UnvalidatedShippingAddress |
| | AND UnvalidatedBillingAddress |
| | AND list of UnvalidatedOrderLine |
| | |
| | data UnvalidatedOrderLine = |
| |
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.