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[W5.10h][F11-B1]Sheikh Umar #746

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[W5.10h][F11-B1]Sheikh Umar #746

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23 changes: 23 additions & 0 deletions doc/DeveloperGuide.md
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Expand Up @@ -88,6 +88,29 @@ Use case ends.
> 3a1. AddressBook shows an error message <br>
Use case resumes at step 2

#### Use case: Rename person

**MSS**
1. User requests to rename person
2. User enters name of person to be renamed and new name of the person to be renamed.
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Use case sequence alternates between the actor and the system.
Your current case is actor -> actor -> system.

A better use case would be:
1. User requests to rename person
2. Addressbook requests for name of person.
3. User enters name of person to be renamed and new name of the person to be renamed.
...

3. AddressBook renames the person <br>
Use case ends.

**Extensions**

2a. The addressbook is empty

> Use case ends
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Should the use case end in this case? Would it be good user experience to get no feedback?


2b. Name that user wants to update is the same as name of the person that user wants to rename

> 2b1. AddressBook shows an error message <br>
Use case ends

2c. The name of the person that user wants to update is not in addressbook

> Use case ends
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Should the use case end in this case? Would it be good user experience to get no feedback?


## Appendix C : Non Functional Requirements

1. Should work on any [mainstream OS](#mainstream-os) as long as it has Java 8 or higher installed.
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