Manav Rathi

How many times do you chop things in half to get to a certain amount

That's -log2!

3b1b defining information aka -log2 in their latest videos (and I agree with them, log 1/2 formulation is clearer!)

#math #machinelearning

as_ cheap borrowed view
to_ potentially expensive conversion
into_ consuming conversion

#rustlang

@6d03@mathstodon.xyz Yes! That's not great, it's just a tradeoff Rust has made for a more familiar dialect

so map is (a -> b) -> (f a -> f b), and_then/flat_map (a -> f b) -> (f a -> f b)

or equivalently, map is (a -> b) -> f a -> f b, and_then/flat_map is (a -> f b) -> f a -> f b, and map is fmap, and_then/flat_map is bind, but no typeclasses like #haskell, piecemeal instead)

#rustlang

#rustlang

#til std::mem::drop is just an empty function!

fn drop(_x: T) {}

https://doc.rust-lang.org/src/core/ops/drop.rs.html#243

The "drop" happens as a consequence of transferring ownership

(and in case you're wondering, yes, I learnt of this because of the classic let _ = expr vs let _x = expr footgun; the former drops the unowned temporary at the end of the line, the latter binds so the value lives till the end of scope, and drop is the way to force the complier's hand)

#rustlang

@michalfita@mastodon.social Yes! There's CARGO_TARGET_DIR, I was tempted ngl :), but in my case the problem was much more tractable — monorepo and a fixed set of workspaces, so I thought I'll go with the more deterministic solution.

I am riding on the limited express, one of the crack trains of the nation.
Hurtling across the prairie into blue haze and dark air go fifteen all-steel coaches holding a thousand people.
(All the coaches shall be scrap and rust and all the men and women laughing in the diners and sleepers shall pass to ashes.)
I ask a man in the smoker where he is going and he answers: "Omaha."

— Carl Sandburg, Limited (1916)

#poem

Rust's target/ folder is designed to be safe to share (happy to be corrected!) So I just symlinked it across all project's worktrees :) Saves a lot (lot!) of disk The only issue I faced was that target then becomes a symlink, and the (conventional) .gitignore was target/, so I needed to add a local .git/info/exclude #rustlang

@trifectatech@fosstodon.org Love the *** feedback when I'm typing passwords. Surprising to me how much that psychologically has reduced, nay eliminated, me typing wrong passwords. Interesting that "This feature was initially not even on our roadmap! " :) So I'm glad it got there.

A single function — eml(x,y) = exp(x)−ln(y) — together with the constant 1 is the equivalent of a universal NAND but for mathematics

https://arxiv.org/pdf/2603.21852

I think I know what emergence means now:
https://mnvr.in/2026/emergence

Came to me in a dream today. That the hidden CoTs of LLMs are not "thinking" or "reasoning", but the LLM dreaming.

#llm

I've decided to double down on em-dashes.

https://mnvr.in/2026/em-dashes

The people against AI are asking the wrong questions. This is my attempt to get them to retest their priors. Maybe I'm being naive, but here goes.

https://mnvr.in/2026/the-important-questions

#AI #llm

कर्मण्येवाधिकारस्ते मा फलेषु कदाचन ।
मा कर्मफलहेतुर्भूर्मा ते सङ्गोऽस्त्वकर्मणि ॥

— Gita 2.47

Action alone is your right, never the outcome. Outcomes arise from a wider causal field; you’re not the doer, nor may you attach yourself to inaction.