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gpderetta · 2026-03-19T15:10:56 1773933056

> Make sure to check /active

Thanks, TIL.

jacquesm · 2026-03-19T15:23:08 1773933788

We call it 'the better homepage'.

GeoAtreides · 2026-03-19T18:48:49 1773946129

tbf, less flagged posts hitting /active lately

either they kill them early (delete them) or hn policy quietly changed

gpderetta · 2026-03-19T15:07:14 1773932834

The author is running the benchmark multiple times with the same random seed to discover how long a pattern can the predictor learn.

gpderetta · 2026-03-19T15:04:56 1773932696

Typical branch predictors can both learns patterns (even very long patterns) and use branch history (the probability of a branch being taken depends on the path taken to reach that branch). They don't normally look at data other than branch addresses (and targets for indirect branches).

jeffbee · 2026-03-19T15:12:34 1773933154

They can't. The data that would be needed isn't available at the time the prediction is made.

1718627440 · 2026-03-19T15:21:58 1773933718

Yeah, otherwise you wouldn't need to predict anything.

gpderetta · 2026-03-19T12:19:22 1773922762

True. Yet he still managed to do less damage.

input_sh · 2026-03-19T12:30:23 1773923423

...because he had competent people around him that he trusted enough to make decisions, and not former TV hosts.

This isn't to say "oh he was just a puppet" nor "all US presidents are puppets", but to say that the decision of who they choose to fill important positions is in and of itself the most important decision in every presidential term. They only really need to be not senile for the first month or so, for the rest of the term it's just a PR problem.

gpderetta · 2026-03-18T20:25:10 1773865510

Ah, I remember Cosmos and SCOPE from my time at MS ~15 years ago! It was actually pretty cool technology. So is it still around?

gpderetta · 2026-03-18T13:14:48 1773839688

wouldn't a concurrent change without synchronization be UB anyway? Also parent wants to cache the address, not the value (but you have to cache the value if you want to optimize manually)

skitter · 2026-03-18T15:45:19 1773848719

Why would it be UB? All objects are behind (thin) pointers, which can be overwritten atomically.

asa400 · 2026-03-18T20:17:26 1773865046

Not necessarily UB, but absolutely "spooky action" nondeterministic race conditions that make things difficult to understand.

gpderetta · 2026-03-18T13:13:32 1773839612

ok, then it is nuts that __getattr__ (itself a specially blessed function) is not required to be pure at least from the caller point of view.

Ardren · 2026-03-18T15:42:14 1773848534

If it was it wouldn't be Python. It can never be pure because __getattr__ is just another method that anyone can overwrite.

gpderetta · 2026-03-18T09:59:13 1773827953

MSVC used to break library ABI pretty much on every release. They stopped after overwhelming customer demand.

gpderetta · 2026-03-16T12:22:59 1773663779

I don't understand what are you saying. The journalist published an article claiming that a missile struck without being intercepted (although with no damage). The gamblers wanted the journalist to retract and say that the missile was intercepted.

Are you saying that the gamblers were actually the censors or that the reality was that the missile was indeed intercepted and somehow the censors forced the journalist to say it wasn't?

gpderetta · 2026-03-16T11:19:56 1773659996

If the rules used to compute the index change (as opposed to the index composition of course), are index funds obliged to follow them no matter what? I assume this is very fund dependent, but would be interesting to know what most guarantee.