How can you use code coverage and mutation testing to add tests to legacy code? At @mendercon last year, I demonstrated this powerful technique step by step on the Gilded Rose kata, which is hosted by @emilybache on her GitHub account: https://github.com/emilybache/GildedRose-Refactoring-Kata
You can watch the talk here: https://www.youtube.com/watch?v=0qna5cuzDI0
DRY Don't Repeat Yourself Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
— Dave Thomas, Andy Hunt
I really liked watching this talk: "Code Mending in the AI age - Ray Myers | Craft Conference 2024"
Why I’m Not Ready to Abandon JavaScript for “Faster” Languages, by (not found on Mastodon or Bluesky):
Test-Driven Development can be considered as reducing your WIP (Work-In-Progress) at a microlevel. By focusing on writing just enough code to make a failing test pass, refactoring what you added and push to source control, we minimise the amount of unexecuted code (= WIP). Limiting WIP is essential for fast software delivery.
Medior PHP https://leanpub.com/b/mediorphp by Joseph Kanyo is the featured bundle of ebooks 
on the Leanpub homepage! https://leanpub.com #Php #Databases #Mysql #ComputerProgramming #Laravel #Symfony #Html #Refactoring #Apis #ApiDesign #books #ebooks
What is refactoring, why is it important and how can you get really good at it? In this Making Tech Better podcast episode, I spoke to @emilybache about enhancing the skills and culture of your teams, to make your code easier to understand and cheaper to modify.
You can listen here (subtitles on screen): https://youtu.be/ZcEz8cA017M?si=tYhdCbp851oiyLSz
One danger of a too transparent box used for TDD is that tests get too coupled to a specific implementation and thus hinder refactoring and evolution. ie, taking the soft out of software.
Sure you are aware of that, but novices easily fall into that trap, when they not have learned enough about refactoring towards simpler code.
Don't live with broken windows.
— Andy Hunt, Dave Thomas
DRY Don't Repeat Yourself Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
— Dave Thomas, Andy Hunt
Medior PHP https://leanpub.com/b/mediorphp by Joseph Kanyo is the featured bundle of ebooks on the Leanpub homepage! https://leanpub.com #Php #Databases #Mysql #ComputerProgramming #Laravel #Symfony #Html #Refactoring #Apis #ApiDesign #books #ebooks
Is it too late to say that refactoring is a dumb word for a dumb concept driven by a bad computer language?
In recent years every spring seems to turn into a period of _massive_ refactoring & restructuring in #ThingUmbrella — maybe it's a form of spring cleaning, even though the reasons[1] are not seasonal... Currently spending my nights reworking the https://thi.ng/vectors package (likely one of the most comprehensive vector packages available for TS/JS) and trying out different splits/structures, testing their impact on package sizes and usability in existing downstream packages. Currently over 3000 source files with uncommitted changes... aaaarrrgghh! 
Most functions (vector operations) in this package exist in multiple versions (many code generated, but now in need to be updated): Generic n-dimensional, loop-free, optimized 2D/3D/4D versions and strided versions for manipulating vectors views of larger nD data buffers (supporting all kinds of data layouts, incl. AOS, SOA, hybrid...)
Does your PHP code contain repeated logic for validating required fields?
Simplify it by using a loop and dynamic field names.
How would you improve it?
Mission jQuery Zero: How FreeAgent Removed jQuery From Our Application, by @freeagentapp.bsky.social:
Refactoring Challenge: Does your PHP code run multiple SQL queries inside a loop? Optimize it by fetching data in a single query. How would you improve it?
Over-engineering takeaways:
Misjudging future requirements can lead to inappropriate abstractions. Avoiding over-engineering can be as impactful as achieving technical brilliance.Simplicity is key to maintainability.Avoid predicting needs that aren't certain.Create abstractions that align with current and reasonable future requirements.
#Java Live Coding Stream
Join me live as I continue work on the event-sourcing aspect of JitterTed's TDD Game online.
Java, #EventSourcing, #TDD, #Refactoring, mistakes, rants, and more: https://jitterted.stream
