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29 changes: 29 additions & 0 deletions Domain-model.md
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### Exercise

Follow the same process as above to translate these two user stories into domain models.

```
As a supermarket shopper,
So that I can pay for products at checkout,
I'd like to be able to know the total cost of items in my basket.
```
| Classes | Methods | Scenario | Outputs |
|-----------|--------------------------------------|-----------------|---------|
| `Product` | `Product(String name, double price)` | Create product | |
| `Basket` | `Add(Product)` | Add to basket | |
| | `GetItems()` | Get items | |
| | `GetTotalPrice()` | Calculate total | Double |


```
As an organised individual,
So that I can evaluate my shopping habits,
I'd like to see an itemised receipt that includes the name and price of the products
I bought as well as the quantity, and a total cost of my basket.
```
| Classes | Methods | Scenario | Outputs |
|-----------|-------------------------------------|-----------------|---------|
| `Product` | `Product(String name, double price)` | Create product | |
| `Basket` | `Add(Product, int quanity)` | Add to basket | |
| | `GetTotalPrice()` | Calculate total | Double |
| | `ItemizeProduct()` | | |
3 changes: 2 additions & 1 deletion EXERCISE1.md
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### Warm up

A **User Story** describes one thing a program is expected to do, from the perspective of somebody using that program. When planning a program, the client's requirements will be decomposed into many User Stories. Much of a developer's life is spent translating User Stories into a functional system. These systems are made up of different components, and each component is made up of units. We call these systems **Domain Models**.
A **User Story** describes one thing a program is expected to do, from the perspective of somebody using that program.
When planning a program, the client's requirements will be decomposed into many User Stories. Much of a developer's life is spent translating User Stories into a functional system. These systems are made up of different components, and each component is made up of units. We call these systems **Domain Models**.

There are various different formats for user stories but they all share a common goal: describe a feature the user wants. Here's one style of user story:

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