Cutting code quickly

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Llewellyn Falco

Test Commit Revert / GildedRoseKata / ApprovalTests / Combination Tests / Lift Conditional / Provable Refactoring

Software

@LlewellynFalco 1
Prep
Open:
https://github.com/emilybache/GildedRose-Refactoring-Kata/blob/master/GildedRoseRequirements.txt
https://github.com/approvals/ApprovalTests.Java
https://github.com/InnovatingTeams/provable-refactorings/blob/master/recipes/micro-step-helpers/add-
explicit-return/cpp.md
https://github.com/RefactoringCombos/ArlosCommitNotation
Git
git rev-list --count master..head

@LlewellynFalco 3
github.com/emilybache/GildedRose-Refactoring-Kata

@LlewellynFalco
Feature Request:
"Conjured" items degrade in Quality
twice as fast as normal items
4

@LlewellynFalco
“Give me 6 hours to chop down
a tree and I will spend the
first 4 sharpening the axe.
- Abraham Lincoln
5

@LlewellynFalco
“Make the change easy,
Then make the easy change.
Warning: the first part might be hard”
- Kent beck
6

@LlewellynFalco 7
The difference between a good programmer
& a great programmer is that the great
programmers are extremely lazy

@LlewellynFalco
prefix meaning
F Feature
B Bug
t Test only
r Provable Refactor
a Automated
!!! non-provable refactoring

@LlewellynFalco
1.
Test
Let’s write a few hundred tests
9

@LlewellynFalco
2.
Lift-Up Conditional
Refactoring
Lift and Separate…
10

@LlewellynFalco
3.
Split to Classes
To each there own…
11

@LlewellynFalco
4.
Add New functionality
Make it easy, do the easy thing
12

@LlewellynFalco
RESOURCES
Gilded Rose: github.com/emilybache/GildedRose-Refactoring-Kata
ApprovalTests: github.com/Approvals
Arlo’s Git Notation: github.com/RefactoringCombos
Video of Emily Bache:
www.praqma.com/stories/advanced-testing-refactoring-techniques
These slides:
13

@LlewellynFalco
Thanks!
ANY QUESTIONS?
You can find me at:
@LlewellynFalco
llewellynfalco.blogspot.com
14
Please connect on
LinkedIn & Twitter
Presentation template by SlidesCarnival

@LlewellynFalco
SlidesCarnival icons are editable
shapes.
This means that you can:
● Resize them without losing
quality.
● Change fill color and
opacity.
Isn’t that nice? :)
Examples:
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Cutting code quickly

1. @LlewellynFalco 1 Prep Open: https://github.com/emilybache/GildedRose-Refactoring-Kata/blob/master/GildedRoseRequirements.txt https://github.com/approvals/ApprovalTests.Java https://github.com/InnovatingTeams/provable-refactorings/blob/master/recipes/micro-step-helpers/add- explicit-return/cpp.md https://github.com/RefactoringCombos/ArlosCommitNotation Git git rev-list --count master..head

2. @LlewellynFalco Cutting Code Quickly

3. @LlewellynFalco 3 github.com/emilybache/GildedRose-Refactoring-Kata

4. @LlewellynFalco Feature Request: "Conjured" items degrade in Quality twice as fast as normal items 4

5. @LlewellynFalco “Give me 6 hours to chop down a tree and I will spend the first 4 sharpening the axe. - Abraham Lincoln 5

6. @LlewellynFalco “Make the change easy, Then make the easy change. Warning: the first part might be hard” - Kent beck 6

7. @LlewellynFalco 7 The difference between a good programmer & a great programmer is that the great programmers are extremely lazy

8. @LlewellynFalco prefix meaning F Feature B Bug t Test only r Provable Refactor a Automated !!! non-provable refactoring

9. @LlewellynFalco 1. Test Let’s write a few hundred tests 9

10. @LlewellynFalco 2. Lift-Up Conditional Refactoring Lift and Separate… 10

11. @LlewellynFalco 3. Split to Classes To each there own… 11

12. @LlewellynFalco 4. Add New functionality Make it easy, do the easy thing 12

13. @LlewellynFalco RESOURCES Gilded Rose: github.com/emilybache/GildedRose-Refactoring-Kata ApprovalTests: github.com/Approvals Arlo’s Git Notation: github.com/RefactoringCombos Video of Emily Bache: www.praqma.com/stories/advanced-testing-refactoring-techniques These slides: 13

14. @LlewellynFalco Thanks! ANY QUESTIONS? You can find me at: @LlewellynFalco llewellynfalco.blogspot.com 14 Please connect on LinkedIn & Twitter Presentation template by SlidesCarnival

15. @LlewellynFalco SlidesCarnival icons are editable shapes. This means that you can: ● Resize them without losing quality. ● Change fill color and opacity. Isn’t that nice? :) Examples: 15

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