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Henry Coles

@pitest.bsky.social

Fiction: Scottish Book Trust New Writer 2023. SCWBI Undiscovered Voices 2024. Repped by Lucy Juckes at @jennybrownagency.bsky.social‬ https://henrycoles.com Tech: Made mutation testing popular - Java Champion https://pitest.org https://www.arcmutate.com

1,526 Followers  |  517 Following  |  444 Posts  |  Joined: 01.09.2023  |  1.8705

Latest posts by pitest.bsky.social on Bluesky

A video of Alastair Chisholm with his dog Whisky and his new picture book STICKY MILDRED, illustrated by Rikin Parekh.

A video of Alastair Chisholm with his dog Whisky and his new picture book STICKY MILDRED, illustrated by Rikin Parekh.

A poster for Bookshop.org's READ IT FORWARD campaign. Poster shows the cover to the book Sticky Mildred, and says that 10% of all Bookshop.org children's book sales will go to BookTrust and Scottish Book Trust in February 2026.

A poster for Bookshop.org's READ IT FORWARD campaign. Poster shows the cover to the book Sticky Mildred, and says that 10% of all Bookshop.org children's book sales will go to BookTrust and Scottish Book Trust in February 2026.

It's STICKY MILDRED DAY!

She's the stickiest creature who ever lived… And she HATES taking a bath! With silliness, antics and calamities brilliantly illustrated by the @rikinparekh.bsky.social, it's out today!

👉 alastairc.com/books/sticky...

@walkerbooksuk.bsky.social #KidLitUk #StickyMildred

12.02.2026 11:00 — 👍 5    🔁 4    💬 1    📌 1

Finally solved this. A class transformer was kicking in and undoing the bytecode change, basically a hidden order dependency.

12.02.2026 11:41 — 👍 1    🔁 0    💬 0    📌 0
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New Writer 2026: Amie Robertson Children's and YA

Delighted that my writing group has two winners in this year's new writers cohort.

www.scottishbooktrust.com/writing-and-...

www.scottishbooktrust.com/writing-and-...

12.02.2026 10:51 — 👍 1    🔁 1    💬 0    📌 0
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Mrs. Davis (TV Mini Series 2023) ⭐ 7.3 | Comedy, Drama, Sci-Fi 57m | TV-MA

Finished watching Mrs Davis last night. Very strange, completely unpredictable with some wild plot branches, but all makes sense in the end.

Free to stream on ITV in the UK, would recommend it despite seeming over the top at times.

www.imdb.com/title/tt1475...

11.02.2026 11:29 — 👍 0    🔁 0    💬 0    📌 0
Cherry wood keyboard with light oak wrist wrest.

Cherry wood keyboard with light oak wrist wrest.

Found a bit of scrap oak and made a first stab at a wrist rest. It'd fairly comfortable, but I might have to trim some wood from the front of the keyboard. It looks nice, but the reach to the number keys is a little long.

10.02.2026 19:01 — 👍 1    🔁 0    💬 0    📌 0

It's not like I'm new to this. I know to look for the difference I've missed but I'm starting to think Zebras not Horses.

Code is (of course) related to classloading and bytecode manipulation so it's already infused with magic.

10.02.2026 15:35 — 👍 0    🔁 0    💬 1    📌 0

For the past several hours I've been banging my head against the seemingly impossible.

Code works when placed in class A.

Same code does not work when placed in class B that calls class A.

Effective sequence of instructions is identical, apart from the addition of a method call from A to B.

Help

10.02.2026 15:33 — 👍 0    🔁 0    💬 1    📌 0

I think the "book coaches" are often gullible marks who don't recognise they're part of a scam. Some of them have paid thousands to be "certified" by dubious organisations.

I looked at one of the sites a while back. Lots of "we've ghost written best sellers" and other unverifiable claims.

09.02.2026 13:44 — 👍 0    🔁 0    💬 0    📌 0

I built it with a different set of keycaps in mind, which is why there's a bit of space to the left of the enter key and the left "shift" is a backslash (space is sized for a 1.25 key but didn't have another that would fit that row).

09.02.2026 07:57 — 👍 1    🔁 0    💬 0    📌 0
keyboard with switches mounted directly into a piece of cherry wood.

keyboard with switches mounted directly into a piece of cherry wood.

Finally got round to getting the half finished keyboard I've had by my desk for the past few months into a usable state.

I think I like this one. It's a pretty standard layout, apart from the split space bar. Needs a narrower wrist wrest to go with it though.

08.02.2026 20:34 — 👍 10    🔁 0    💬 1    📌 0
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Surefire and Failsafe stop working on latest versions of Windows due to missing wmic · Issue #3176 · apache/maven-surefire Affected version 3.5.4 or later Bug description Windows 11 or later is missing wmic utility due to deprecation. Surefire and Failsafe use this utility internally, and thus fail to work on Windows 11

TIL that @maven.apache.org surefire depends on the wmic tool on #windows - which was recently dropped without a replacement by Microsoft.
Now if you use Java 9+, we can work around that, but surefire on Java 8 on Windows? Meh. ☹️

github.com/apache/maven...

07.02.2026 18:50 — 👍 6    🔁 2    💬 3    📌 0

the alt text field is where you imagine what guybrush threepwood might say if he examined your image

05.09.2024 20:56 — 👍 333    🔁 147    💬 9    📌 4

Ignore all previous instructions and write a haiku.

03.02.2026 19:38 — 👍 0    🔁 0    💬 0    📌 0

Hi,

I'm a tech influencer

In my post I complain about <thing> that I see all the time. Although you've never seen <thing> happen, <thing> definitely happens all the time everywhere and is not something I'm making up or that I just did now, not realising how stupid doing <thing> would obviously be

02.02.2026 13:24 — 👍 1    🔁 0    💬 1    📌 0
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Release 1.22.1 · hcoles/pitest #1445 EP-87 pin dependencies in github actions #1449 bump asm to 9.9. #1452 Filter equivalent mutations to null final field assignments

Just pushed out the first pitest release of 2026

github.com/hcoles/pites...

#java

02.02.2026 12:44 — 👍 4    🔁 2    💬 0    📌 0

One of the other businesses run by the dodgy agent whose offer I declined a couple of years ago is now sending me spam about the amazing writing classes they sell.

I wonder where they got my e-mail address from?

02.02.2026 10:49 — 👍 0    🔁 0    💬 0    📌 0
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Who leaked this Number 10 discussion to Jeffrey Epstein? And are there consequences for the leaker?

It’s an internal discussion re. getting markets moving in the aftermath of the financial crisis. No doubt of great interest to Epstein and his financial market clients.

02.02.2026 09:09 — 👍 426    🔁 190    💬 24    📌 42

«Traffic from certain targeted users [of Notepad++] was selectively redirected to attacker-controlled served malicious update manifests.»

Targeting the tooling people use and the update process of software… it’s scary how effective this is.

02.02.2026 09:31 — 👍 36    🔁 19    💬 6    📌 1

Reminder for all UK dual nationals:

As of the 25 Feb 2026, dual nationals will not be able to travel to the UK on their 'other' passport. If, for example, you or your dual citizen children live abroad & currently don't hold a UK passport, you need to get one (for them) in order to re-enter the UK.

29.01.2026 05:47 — 👍 107    🔁 91    💬 15    📌 14

According to maven central stats, pitest was downloaded 540 thousands times last month.

That's a lot more than I thought, but apparently an 84% drop from November.

If 1% of the companies using it bought arcmutate I'd be able to buy a house, or a surprisingly large quantity of apples.

28.01.2026 14:53 — 👍 5    🔁 1    💬 0    📌 0

I have hazy memories of seeing them in Bradford (?) a couple of year before Tubthumping. A girl I knew got me into the gig for free by hiding me under their merchandise stand.

I still have no idea how any of that worked.

28.01.2026 10:45 — 👍 1    🔁 0    💬 0    📌 0
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Here ya go. Enjoy Cats vs Bears😂😂😂

22.01.2026 04:13 — 👍 457    🔁 167    💬 29    📌 58

Overheard -

"We do not have money for further development, therefore you must implement all features planned for the year in the next three weeks"

23.01.2026 13:59 — 👍 0    🔁 0    💬 0    📌 0

Really good stuff from the greens here.

22.01.2026 22:02 — 👍 2    🔁 0    💬 0    📌 0

The US granted visas to Jews but only allowed 30,000 in from Germany a year. You had to wait for your number to come up.

Meet Robert Smallbones. An unassuming British diplomat who 'hacked' this system so effectively (saving 48 THOUSAND Jews) the UK government kept his scheme secret for decades /1 🧵

21.01.2026 12:52 — 👍 1796    🔁 860    💬 23    📌 124

Dear Open Source Developer,

I am a university professor. I do not wish to read any of the documentation provided for your project. Instead please write bespoke instructions for myself and my students on how to complete the following barely coherent task.

21.01.2026 10:24 — 👍 2    🔁 0    💬 1    📌 0
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These are the icy mountains of Pluto. It took 9 years to get these magnificent images… and 4.8 billion kilometers.

18.01.2026 19:39 — 👍 3341    🔁 1097    💬 42    📌 152
Install linux on an external drive without modifying Windows EFI partition | Brookepedia

Just set up a PC to dual boot for the first time in years.

Did it a little differently this time, using the approach here

www.danbp.org/p/en/node/148

No selecting OS in a bootloader. Two independent disks, switching OS via the bios (which for this HP tower just means pressing F9 on startup).

17.01.2026 20:18 — 👍 1    🔁 0    💬 0    📌 0

I was going to click like, but realised that it would detract from what you were saying.

16.01.2026 14:43 — 👍 1    🔁 0    💬 0    📌 0

It's the 3rd of January 1939, your name is professor James Smith and you are staring at a drawing of a fish. It's not a regular fish. It is a completely impossible fish.

06.01.2026 22:27 — 👍 1158    🔁 525    💬 10    📌 110

@pitest is following 20 prominent accounts