Hercules Lemke Merscher
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bitmaybewise.com
Hercules Lemke Merscher
@bitmaybewise.com
35 followers 91 following 160 posts
Coding for a living and for fun -- bitmaybewise.com
Backend Engineer at GitLab
Posts Replies Media Videos
Reposted by Hercules Lemke Merscher
matt.godbolt.org
Day 4 of Advent of Compiler Optimisations! Multiply by constants—which ones use actual multiply? The compiler has tricks to avoid it, then saves you from your own clever hacks.

xania.org/202512/04-mu...
youtu.be/1X88od0miHs

#AoCO2025
xania.org
December 4, 2025 at 12:07 PM
Reposted by Hercules Lemke Merscher
matt.godbolt.org
Day 3 of Advent of Compiler Optimisations! A while loop, recursion, direct addition—all compile to one instruction. The compiler sees the pattern beneath the code.

xania.org/202512/03-mo...
youtu.be/wHg9lYPMvvE

#AoCO2025
You can't fool the optimiser — Matt Godbolt’s blog
Pattern recognition can see through obfuscated code to find the right instruction
xania.org
December 3, 2025 at 12:00 PM
Reposted by Hercules Lemke Merscher
matt.godbolt.org
Day 2: Adding two integers on x86? Not with `add`! The compiler uses a completely different instruction—one designed for memory addressing. Why? xania.org/202512/02-ad... youtu.be/BOvg0sGJnes #AoCO2025
Addressing the adding situation — Matt Godbolt’s blog
We learn why adding on x86 isn't as obvious as you might think
xania.org
December 2, 2025 at 11:28 AM
Reposted by Hercules Lemke Merscher
matt.godbolt.org
Ever wonder why compilers use `xor eax, eax` to zero registers? It's smaller AND faster—CPUs optimise it out entirely!

Day 1 of Advent of Compiler Optimisations: xania.org/202512/01-xo...
Video: youtu.be/eLjZ48gqbyg

#AoCO2025
Why xor eax, eax? — Matt Godbolt’s blog
Why do compilers love xor-ing registers so much?
xania.org
December 1, 2025 at 12:12 PM
Reposted by Hercules Lemke Merscher
astrocrawford.bsky.social
Today I learned that NASA has a collection of free ebooks that can be downloaded as pdfs or ebub format.

The science books even include a children’s section with fun activites and coloring books!

science.nasa.gov/multimedia/s...
Science e-Books - NASA Science
From Earth and the other planets in our solar system, to supermassive black holes and the distant galaxies that contain them, explore NASA science and imagery through our library of e-books.
science.nasa.gov
December 4, 2025 at 2:43 PM
bitmaybewise.com
Bit Maybe Wise - ABEND dump #23
bitmaybewise.substack.com/p/abend-dump...
ABEND dump #23
Book reading philosophy, browser trust issues, career pendulums, and space BBQ.
bitmaybewise.substack.com
November 10, 2025 at 9:58 PM
bitmaybewise.com
open.spotify.com/track/0aTZCg... -- eu escuto essa música gravada ao vivo, e ouço o Falcão cantando hahahaha
All The Rage Back Home - Live
Interpol · Live at Third Man Records · Song · 2024
open.spotify.com
November 3, 2025 at 3:13 PM
bitmaybewise.com
Bit Maybe Wise - Tsonnet #27 - Consistency, consistency, consistency
bitmaybewise.substack.com/p/tsonnet-27...
Tsonnet #27 - Consistency, consistency, consistency
The one where I reorganize function parameters and feel weirdly accomplished.
bitmaybewise.substack.com
November 3, 2025 at 9:38 AM
bitmaybewise.com
Bit Maybe Wise - Tsonnet #26 - Chain me maybe, part 2
bitmaybewise.substack.com/p/tsonnet-26...
Tsonnet #26 - Chain me maybe, part 2
No reference leaks allowed.
bitmaybewise.substack.com
October 29, 2025 at 9:36 AM
bitmaybewise.com
Bit Maybe Wise - Tsonnet #25 - Chain me maybe, part 1
bitmaybewise.substack.com/p/tsonnet-25...
Tsonnet #25 - Chain me maybe, part 1
Teaching Tsonnet to walk through nested object fields.
bitmaybewise.substack.com
October 28, 2025 at 10:13 AM
bitmaybewise.com
MacOS Tahoe -- do not recommend!
October 23, 2025 at 1:31 PM
Reposted by Hercules Lemke Merscher
mauriciojr.bsky.social
Jesus aí dizendo o que precisa ser dito.
donmoyn.bsky.social Don Moynihan @donmoyn.bsky.social · Oct 18
Sweet, Jesus
Guy dressed, like Jesus with sign, saying fascist will not go to heaven
October 18, 2025 at 6:22 PM
Reposted by Hercules Lemke Merscher
tlhm-md.bsky.social
Is it freedom you love? Or is it something else? 🤔
October 18, 2025 at 7:40 PM
bitmaybewise.com
Bit Maybe Wise - Tsonnet #24 - Getting to the root of things: top-level object access
bitmaybewise.substack.com/p/tsonnet-24...
Tsonnet #24 - Getting to the root of things: top-level object access
Tsonnet now supports top-level object access with the $ operator, allowing you to reference root-level fields from anywhere in nested structures.
bitmaybewise.substack.com
October 19, 2025 at 5:36 PM
bitmaybewise.com
Bit Maybe Wise - ABEND dump #22
bitmaybewise.substack.com/p/abend-dump...
ABEND dump #22
Welcome to the ABEND dump!
bitmaybewise.substack.com
September 24, 2025 at 7:00 AM
Reposted by Hercules Lemke Merscher
ocaml.org
FUN OCaml 2025 - Join us in Warsaw, Poland on September 15 for a day full of presentations!
Fun OCaml 2025 is a 2 days open source hacking event dedicated to OCaml enthusiasts and professionals around the globe! This is day 1 and we're live-streaming all the presentations! For the schedule, see https://fun-ocaml.com#schedule.
dlvr.it
September 13, 2025 at 2:38 PM
Reposted by Hercules Lemke Merscher
gohor.se
"And after the break you will learn how mass extermination of American citizens can Make America Great Again. We will be right back."
atrupar.com Aaron Rupar @atrupar.com · Sep 13
Brian Kilmeade endorses euthanizing homeless people: "Involuntary lethal injection, or something. Just kill them."
September 13, 2025 at 5:40 PM
Reposted by Hercules Lemke Merscher
lafa.bsky.social
September 10, 2025 at 4:39 PM
Reposted by Hercules Lemke Merscher
badtux.linuxtips.io
Se vc planta ódio, não espere colher amor.
September 11, 2025 at 4:12 AM
bitmaybewise.com
Tsonnet #23 - Mirror, mirror on the wall, who's the most self-referential of them all?

bitmaybewise.substack.com/p/tsonnet-23...
Tsonnet #23 - Mirror, mirror on the wall, who's the most self-referential of them all?
Tsonnet objects can now reference themselves using self, but this required careful implementation of unique object identifiers, eager scope checking to prevent misuse, and cycle detection
bitmaybewise.substack.com
September 10, 2025 at 8:42 AM
Reposted by Hercules Lemke Merscher
zanfranceschi.bsky.social
Acho tão alecrim dourado quem diz que estimativa de software não deveria existir. Foi isso que quis dizer nesse post no LinkedIn de forma mais contida.
August 31, 2025 at 10:29 PM
bitmaybewise.com
Bit Maybe Wise - Debugging shift-reduce conflicts: Lessons learned building Tsonnet's parser
bitmaybewise.substack.com/p/debugging-...
Debugging shift-reduce conflicts: Lessons learned building Tsonnet's parser
Sometimes the best way to understand parsing conflicts is to watch your parser make mathematically wrong decisions.
bitmaybewise.substack.com
September 1, 2025 at 9:20 AM
bitmaybewise.com
bitmaybewise.substack.com/p/abend-dump...
ABEND dump #21
Welcome to the ABEND dump!
bitmaybewise.substack.com
August 25, 2025 at 7:00 AM
bitmaybewise.com
Bit Maybe Wise - Tsonnet #22 - Fixing a "lazy" bug
bitmaybewise.substack.com/p/tsonnet-22...
Tsonnet #22 - Fixing a "lazy" bug
Fixing Tsonnet's lazy evaluation inconsistency in objects
bitmaybewise.substack.com
August 24, 2025 at 7:00 AM