Skip to main content

Sudoku refactoring

 

Sudoku Refactoring Kata

Following Jay and Llewellyn on their sudoku refactoring, I have forked the sudoku repo and added the java version. As usual, I will post the snippets I found useful in doing the refactoring

Snippets

  • Golden Master
  • Extract Method
  • Extract anonymous class to named class
  • Delete Comments
  • convert parameters to object
  • move the inner class to upper level
  • specify type explicitly
  • transform out parameters to object
  • move types to matching files
  • inline variable
  • extract variable
  • move line above
  • move method to a different class
  • replace static with non-static
  • split variable declaration assignment
  • move method to the constructor
  • isolate field assignment
  • remove unused directives
  • extract constant
  • extract class from a field
  • return value early
  • remove redundant else
  • surround with block
  • asas
  • asas

References

Jay and Llewellyn Series on Sudoku Refactoring

https://www.youtube.com/watch?v=BVGH-dNn-tc&ab_channel=LlewellynFalco
https://www.youtube.com/watch?v=8dyZHMuCiKc&ab_channel=LlewellynFalco
https://www.youtube.com/watch?v=WvSr6E-cO9M&ab_channel=LlewellynFalco
https://www.youtube.com/watch?v=GU_8eMJ8Xd0&ab_channel=LlewellynFalco
https://www.youtube.com/watch?v=f2mZ7v9O3c8&ab_channel=LlewellynFalco
https://www.youtube.com/watch?v=SUgp-msVqnA&ab_channel=LlewellynFalco

Comments

Popular posts from this blog

growing object oriented software, guided by tests summary

Key ideas practice TDD as a design technique and not as a testing technique Software development as a learning process. Expose uncertainly early by testing our assumption as early as possible we use mock objects to identify the essential interactions between modules/objects. This leads to more effective abstractions, which reduces the cost of changing the cost safely over time. Stub queries; expect actions??? Write code that depends as little as possible on its context. programming by intention Test-Driven Development (TDD) and Quality Software development as a learning process. The best approach a team can take is to use empirical feedback to learn about the system and its use and then apply it back to the system. Development is incremental and iterative. Incremental development builds a system feature by feature. Each feature is implemented as an end-to-end slice. As a result, the system is continuously integrated and ready for deployment. A system is deployable when the acceptance t...

What’s a simple way to share and learn refactor?

  I have been organizing coderetreat and creating screencasts on refactoring and TDD, etc… however, I find it takes lots of time and effort to organize, preparing and facilitate. (it’s not that I complain about it as a matter of fact I love it every single second and I’m amazed at how much I have learned from the community) I have been asking myself, what’s the simpler way for me to learn to refactor and share with others? (why refactor, you may ask? it’s because it’s my favourite topic in the long never-ending list of agile technical practices) and for some reason, I really like to share my boring meme jokes, so I guess why not share a list of animated gifs of refactoring and the motivation of it. I guess since I’m an Asian guy (hopefully some kind of descendants from Bruce Lee) so this saying is pretty cool to me: “I fear not the man who has practiced 10,000 different kicks once, but I fear the man who has practiced one kick 10,000 times.” Another way to look at it, from J.B Rain...

How to Win Friends and Influence People summary

Principles Fundamental techniques in dealing with people Don't criticize, condemn or complain. This makes them defensive and justifies their actions. Instead, praising them lowers their defense and they will be more receptive to your feedback. give honest and sincere appreciation arouse in the other person an eager want. become genuinely interested in other people i.e.: remember other people's birthdays send linkedin messages of congratulations when someone in your network gets a promotion or professional success coordinate office parties for personal celebrations such as births, accomplishments or birthdays. people crave the feeling of importance. "What is there about him that I can honestly admire?" appeal to the other person's interests. Virtually all people care more about what they want than what you want keep asking yourself - "what is it that this person wants?" everyone has something they can teach you, and you benefit by figuring out what that i...