Valentin Deleplace
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deleplace.bsky.social
Valentin Deleplace
@deleplace.bsky.social
110 followers 66 following 220 posts
Engineer on cloudy things at Google.
@[email protected]
💙 Serverless, QR codes, ≡Go.

https://programming-idioms.org
Try coolmaze.io 📱➡️💻
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deleplace.bsky.social
Antigravity is **super impressive**. I asked it to make a command line client for Cool Maze - Push to Computer, in Go.
In 5mn it implemented the complex workflow right, and it **just worked**.
Within 2h I had all the less important details right as well. Wow 🤯

antigravity.google
#AGY #Gemini
The QR code displayed by the Cool Maze - Push to Computer command line tool generated by Google Antigravity The Google Antigravity website
November 21, 2025 at 1:43 PM
deleplace.bsky.social
looooooooooooooool
AI crank lifting the world
November 21, 2025 at 1:36 PM
deleplace.bsky.social
A drop in the rating of my mobile app. I guess someone has given 4★.
Well, 4.9 now looks less suspicious than 5.0 🤷
The average rating of Cool Maze on Google Play Store dropping from 4,951 to 4,940
November 20, 2025 at 12:00 PM
deleplace.bsky.social
Lord, thank you for giving me life in a country where one liter weighs one kilogram, and where it's okay that you don't exist
October 9, 2025 at 8:29 PM
deleplace.bsky.social
Linkedin knows me so well 🤣😂

Thank you AI and big data
Valentin, explore relevant opportunities with PMU Get the latest jobs and industry news
October 7, 2025 at 8:03 AM
deleplace.bsky.social
Hmm what's this spike at 18 Cloud Run instances?
A traffic surge? An infinite loop in my backend code? An attack? A misconfigured autoscaler?
#GoogleCloud
Container instance count chart: always a single instance, except at 8:40PM with 18 instances
September 8, 2025 at 8:58 PM
deleplace.bsky.social
Microsoft trying EEE "Embrace, Extend, Extinguish" to fight spam or something
Suspicious but genuine email saying "Bonjour Valentin! Achetez avec Microsoft et gagnez de l'argent en retour"
August 17, 2025 at 4:19 PM
deleplace.bsky.social
In other shocking news, the "fastest" way to send a photo from mobile to a nearby computer is effectively to upload it to a server located in another continent, and have the computer download it from that distant server
👇
John Carmack: "I can send an IP packet to Europe faster than I can send a pixel to the screen. How f’d up is that?"
July 31, 2025 at 1:24 PM
deleplace.bsky.social
Thank you Gemini 😅
In conclusion, while programming-idioms.org has a good concept, its execution is flawed, primarily due to the lack of quality control over the code examples. It can be a useful starting point for beginners or for quick comparisons, but the information should be taken with a grain of salt, and it's always a good idea to verify the solutions with other, more reliable sources.
July 24, 2025 at 1:17 PM
deleplace.bsky.social
It it surprisingly cumbersome to determine the Error Correction Level (ECL) of a given QR code, as QR scan libraries don't expose this low-level info.
TIL I can just visually read it 🤦 which was enough for my specific needs
How to determine the ECL L, M, Q or H just by looking at the bottom-left of the QR code
July 20, 2025 at 11:39 AM
deleplace.bsky.social
Toddler reaches to Dad's back pocket. Toddler triumphantly pulls out a phone. Toddler reaches again to Dad's back pocket. Dad is now wondering "Where does this kid think phones come from"
July 18, 2025 at 9:41 AM
deleplace.bsky.social
The Will Rogers phenomenon
Ma'am, where's Lisa? As you know, you're all in the best class out of our two classes. Lisa is good but did not perform that well lately. We transferred her to the other class, thereby increasing the average rating of the other class, but also the average rating of your class as well. A very good move for the whole school. Ma'am where's Denis? We increased the rating of the two classes by moving him to the other class. Ma'am, what's going on? You know you're our top performer, Henry. Your singleton class has the highest average rating ever. Can I go to the other class and further improve their rating? Don't be silly
July 7, 2025 at 11:46 AM
deleplace.bsky.social
I was horrified reading this. In less than 10s, I had formed a plausible explanation like "selection bias", "Simpson's paradox" or "Berkson's fallacy". How could this puzzle remain unsolved for 40 years? Was the 20th century scientific culture so different? That's the real puzzle IMO
SMOKING FOR NEWBORNS Even after the smoking and cancer debate died down, one major paradox lingered. In the mid-1960s, Jacob Yerushalmy pointed out that a mother's smoking during pregnancy seemed to benefit the health of her newborn baby, if the baby happened to be born underweight. This puzzle, called the birth-weight paradox, flew in the face of the emerging medical consensus about smoking and was not satisfactorily explained until 2006—more than forty years after Yerushalmy's original paper. I am absolutely convinced it took so long because the language of causality was not available from 1960 to 1990. In 1959, Yerushalmy had launched a long-term public health study that collected pre- and postnatal data on more than 15,000 children in the San Francisco Bay Area. The data included information on mothers' smoking habits, as well as the birth weights and mortality rates of their babies in the first month of life.
June 23, 2025 at 2:00 PM
deleplace.bsky.social
J'ai été horrifié par ce passage. En moins de 10s, j'avais formé une explication plausible de type "biais de sélection" ou "paradoxe de simpson". Comment cette énigme a-t-elle pu perdurer 40 ans? La culture scientifique du 20e siècle était-elle si différente? Là est plutôt la vraie énigme, selon moi
LE TABAGISME CHEZ LES NOUVEAU-NÉS Même après la fin du débat sur le lien entre tabagisme et cancer, un paradoxe majeur perdura. Au milieu des années 1960, Jacob Yerushalmy fit remarquer un fait singulier : la santé des nourrissons qui naissaient en sous-poids était meilleure si leur mère avait fumé pendant la grossesse. Cette énigme, appelée « paradoxe du poids de naissance », allait à l'encontre du consensus médical émergeant sur le tabagisme et ne fut expliquée de manière satisfaisante qu'en 2006, soit plus de quarante ans après l'article de Yerushalmy. S'il fallut un tel délai pour résoudre ce paradoxe, c'est parce que – j'en suis absolument convaincu – le vocabulaire de la causalité n'était pas encore disponible entre 1960 et 1990. En 1959, Yerushalmy lança une étude de santé publique censée recueillir à long terme des données pré- et postnatales sur plus de 15 000 enfants de la Baie de San Francisco. Les données incluaient des informations sur les habitudes tabagiques des mères, ainsi que sur le poids à la naissance et le taux de mortalité des bébés au cours du premier mois de vie.
June 20, 2025 at 8:10 AM
deleplace.bsky.social
I like that when a mobile app's rating is high, the vertical axis has a 5.5 tick mark
The chart of Google Play ratings for my app, with a vertical axis that goes from 4.5 to 5.5
May 28, 2025 at 3:48 PM
deleplace.bsky.social
😱 HOW did I not know yet hitting "?" in #BigQuery would let me see and edit the keyboard shortcuts.
So... New query tab is: ⌘ Alt T
List of BigQuery keyboard shortcuts
May 23, 2025 at 1:04 PM
deleplace.bsky.social
False positive alert, but I'm thankful these guardrails exist
mail.google.com says It seems like you have forgotten to attach a file. You wrote "is attached" in your message, but there are no files attached. Send anyway?
April 7, 2025 at 12:11 PM
deleplace.bsky.social
Dark mode in #GoogleCloud ? 😱😱
I've been waiting for this for 13 years, and it's there now!!

The setting is at console.cloud.google.com/user-prefere...
Dark mode Public Preview is now available in certain products BigQuery UI in dark mode, black background, on a mobile device
April 4, 2025 at 8:44 AM
deleplace.bsky.social
This is important: is the new Go 1.24 benchmark loop syntax making my code 7x slower, and why?
#golang
func mult(a, b float64) float64 { return a * b } func Benchmark1(b *testing.B) { for i := 0; i < b.N; i++ { mult(3.0, 5.0) } } func Benchmark2(b *testing.B) { for range b.N { mult(3.0, 5.0) } } func Benchmark3(b *testing.B) { for b.Loop() { mult(3.0, 5.0) } }
March 21, 2025 at 1:15 PM
deleplace.bsky.social
OpenCore Legacy Patcher literally saved me $1500 so it's fine I give them $40

"Install recent macOS on unsupported Macs"

github.com/dortania/Ope...
opencollective.com/opencore-leg...
The OpenCore Legacy Patcher contribution form Thank you! You are now supporting OpenCore Legacy Patcher.
March 10, 2025 at 10:50 PM
deleplace.bsky.social
When sharing with Cool Maze, by default photos are resized to max 2000x1500.
This is why you have an explicit button "Send original", to transfer the full-resolution original resource
on iOS on Android
February 16, 2025 at 4:52 PM
deleplace.bsky.social
Oh wow, Cool Maze rated 4.8⭐️ on both the Play Store and the Apple Store

coolmaze.io
Cool Maze in the Google Play Store Cool Maze in the Apple App Store
February 14, 2025 at 12:11 AM
deleplace.bsky.social
Squiggly yellow line under "yield"?

Yes, this is a very welcome gopls check for incorrect iterator implementation
github.com/golang/go/is...
#golang
// Returns an iterator that produces only the odd // values of a, and discards the even values. func odd(a []int) iter.Seq[int] { return func(yield func(int) bool) { for _, v := range a { if isOdd(v) { yield(v) } } } } yield may be called again after returning false
January 10, 2025 at 11:26 AM
deleplace.bsky.social
Well, I'll call this an achievement.
4.8 is high
The app Cool Maze with rating 4.8 stars in the Apple App Store
December 18, 2024 at 10:49 AM
deleplace.bsky.social
Comment projeter une production élève en "2 clics"
podeduc.apps.education.fr/cpn-22/video...
Une photo de TP projetée en classe via l'application Cool Maze
December 12, 2024 at 9:28 AM