March 10, 2026
A byte-sized brawl
How many options fit into a boolean?
Rust says 254, C fans yell bitfields, philosophers ask why life is so binary
TLDR: A Rust explainer shows one byte can encode up to 254 stacked “maybe” values, sparking cheers for compiler cleverness. The comments erupted into Rust vs. C vs. C++ jabs, a bitfields flex, and a mini‑philosophy chat about how we cram nuance into yes/no—proof that tiny bytes make big drama.
Rust blog Mond←Tech dropped a cheeky one‑pager claiming a byte can hold up to 254 nested “maybe” values (think: boxes inside boxes that can be “something” or “nothing”), and the internet immediately turned it into a cage match. Fans cheered the clever compiler trick: because only two values are needed for true/false, the other 254 byte values get reused to count how many “Somes” appear before a “None.” Nerd magic? Maybe. Byte‑sized wizardry? Absolutely.
Strong opinions flew. One camp shouted, “A boolean can’t be smaller than a byte—deal with it!” while another side‑eyed from C land: “Actually, you can make them smaller with bitfields,” flexing that old‑school pack-it-tighter energy. Then a drive‑by from the C++ balcony claimed it needs “much more for even a single level,” turning it into Rust vs. C++ round 12. Meanwhile, a philosopher slid in with vibes: maybe our whole world is too binary and we invent “soft booleans” (gray areas, priorities, states) to cope.
Amid meme‑y quips like “how many of those options fit into that boolean,” the thread split between awe at the 254 stunt, nitpicks over what “size” really means, and a reminder that clever encoding isn’t just trivia—it’s how fast, memory‑tight software gets built. Mond wanted a fun magazine piece; the community delivered a full‑blown tech soap opera.
Key Points
- •The author contributed a one-page Rust article to Paged Out!, linking the PDF on their site.
- •An update clarifies that Rust’s Result can exceed one byte because its contained value must have a valid memory representation, limiting niche optimizations.
- •The post explains using size_of::<T>() with Rust’s turbofish syntax to specify generic types without values, contrasting with C/C++ sizeof.
- •Embedding the PDF added JavaScript dependencies and broke the site’s page size counter, which the author plans to fix.
- •The author plans to move from Central Europe to the Seattle area and continue working in AI.