JPEG XL decoding is embarrassingly parallel at the tile level. A 4K image has dozens of independent tiles that can decode simultaneously. The hard part is the output: all those tiles write to the same output buffer, and Rust's borrow checker won't let multiple threads hold &mut references to the same buffer — even if they write to non-overlapping regions.
We wanted full tile-level parallelism with #![forbid(unsafe_code)].
| ; AutoHotkey v2 — Span active window across ALL monitors with cycling states | |
| ; Fully configurable keybindings | |
| ; ===== CONFIGURATION ===== | |
| class Config { | |
| ; Monitor layout - "horizontal" (side-by-side) or "vertical" (stacked) | |
| static MonitorLayout := "horizontal" ; "horizontal" or "vertical" | |
| ; Main cycling hotkeys | |
| static CycleUpHotkey := "#^Up" ; Win+Ctrl+Up |
This is a book born of mistakes, of failures - my own and others - of paths trodden that are better left alone, and of tidbits of wisdom that, I hope, will help you reach your goals faster and with less regret. Also: empathy is the best productivity hack, which I’ll explain later.
It’s not exclusively a coding book - it’s an “everything else” book so that when you do write code, you’re solving the right problems at the right time and in the right way for that specific context.
I have no credentials to offer, but programming language design and related philosophies have been my special interest for 22 years. I’ve been creating and shipping projects solo since I was a wee thing, and I have read tens of millions of lines of code.
| have_header: checking for vm_core.h... -------------------- yes | |
| LD_LIBRARY_PATH=.:/home/lilith/.rbenv/versions/3.1.2/lib "gcc -o conftest -I/home/lilith/.rbenv/versions/3.1.2/include/ruby-3.1.0/x86_64-linux -I/home/lilith/.rbenv/versions/3.1.2/include/ruby-3.1.0/ruby/backward -I/home/lilith/.rbenv/versions/3.1.2/include/ruby-3.1.0 -I. -I/home/lilith/.rbenv/sources/3.1.2/ruby-3.1.2 -I/home/lilith/.rbenv/versions/3.1.2/include -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Wdeprecated-declarations -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wmisleading-indentation -Wpointer-arith -Wwrite-strings -Wimplicit-fallthrough=0 -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable -Wundef -fPIC conftest |
| Using imageflow to thumbnail 32 images in parallel | |
| 0.19user 0.15system 0:00.71elapsed 48%CPU (0avgtext+0avgdata 19420maxresident)k | |
| 8inputs+928outputs (0major+42591minor)pagefaults 0swaps | |
| Using libvips to thumbnail 32 images in parallel | |
| 10.91user 1.55system 0:03.52elapsed 353%CPU (0avgtext+0avgdata 68336maxresident)k | |
| 2264inputs+7264outputs (47major+392240minor)pagefaults 0swaps | |
| using System; | |
| using System.Collections.Generic; | |
| using System.Drawing; | |
| using Xunit; | |
| using Xunit.Abstractions; | |
| namespace AspectTesting | |
| { | |
| use ::std::cell::*; | |
| /// Provides interior mutability for a add-only set. | |
| /// Items can be added (a reference is returned) | |
| /// References can be looked up via a pointer to the item | |
| #[derive(Debug,Clone, PartialEq)] | |
| pub struct AppendOnlySet<T>{ | |
| slots: RefCell<Vec<Box<T>>> | |
| } | |
| impl<T> AppendOnlySet<T> { |
| <nathanael> Why does rust care about lifetime bounds on pointers to generic types? | |
| <delma> iamrohit7: yes if you represent graph like that | |
| * rschiffl1n has quit (Ping timeout: 121 seconds) | |
| <Moonlightning> iamrohit7: I guess. And to remove a node, you'd...have to travel to each of its neighbors in turn, removing that edge and the dropping neighbor's Rc holding self, and then use Rc::try_unwrap() | |
| <delma> there is other reprentantions too | |
| <Moonlightning> Or...unsafe black magic | |
| * mou has quit (Ping timeout: 121 seconds) | |
| <Moonlightning> dinfuehr: names instead of just ids? | |
| <nathanael> Ex: https://gist.github.com/nathanaeljones/80792ff3ffb5854f7a18ba40f60c6770 | |
| <Moonlightning> dinfuehr: AFAIK, Display is only for types that have a single obvious human-readable representation. It's not implemented for most types. |
| #ifndef cheddar_generated_imageflow_pinvoke_h | |
| #define cheddar_generated_imageflow_pinvoke_h | |
| #ifdef __cplusplus | |
| extern "C" { | |
| #endif | |
| #include <stdint.h> |
| #ifndef cheddar_generated_imageflow_h | |
| #define cheddar_generated_imageflow_h | |
| #ifdef __cplusplus | |
| extern "C" { | |
| #endif | |
| #include <stdint.h> |
