Viewing profile — danbruc

Just run a full-text search on the old value. How often does 10 appear in the code base? And is the value you are looking for even 10 or does only the UI show 10 points but in code…

I suspect adrian_b is talking about a scenario where a rouge thread essentially writes random garbage to random addresses in the address space.

About what scenario are you actually talking? Are all threads using the read() and write() functions of the shared data structure? In that case it is absolutely possible for reader…

[...] because if a writer enters an infinite loop while writing the shared data, that will stop progress in any other algorithm [...] Even if you have while (true) { sharedData.wri…

No, such algorithms exist and they use various mechanisms to achieve this. For larger data structures a common trick is to make a copy, update the copy, and then replace the origin…

Not true, a wait-free algorithm guarantees that a read will complete in a bounded amount of time. And it guarantees that all threads make progress, it is lock-free that only guaran…

[...] then the readers will spin forever waiting for the counter to become even again.

Obstruction-free, lock-free, and wait-free are increasingly strong guarantees for non-blocking synchronization mechanisms. A sequence lock is a blocking synchronization mechanism a…

A common approach to mitigating the described data race without using blocking locks is to utilize a sequence lock. A sequence lock is a blocking lock. If the writer dies between t…

Updating a constant versus a config parameter isn’t all that different if the build is fast. Not even remotely true except that in both cases you change a number in some text file.…

Is any of the raw datasets of such an experiment available? I would like to see a scatter plot of self-assesed score vs actual score instead of the data aggregated into four bins.

Ohh, you mean when the CIA supported a coup d'état in Iran? No, sorry, that was 73 years ago. When the USA supported Iraq in attacking Iran including the use of chemical weapons in…

Another fun fact - heavy water has a sweet taste.

33M vertices and 1B edges easily fits into memory, if you use 32 bit integers, it will require about 4 GiB of memory. Out of curiosity I just implemented generating a random graph …

Instead of the CDF I like to use one minus the CDF, the fraction of requests not yet completed at any given time. Then you can make it a log log plot showing the entire tail with d…

Don't get me wrong, a function doing five things is bad. I consider code not good if you write if(condition) instead of if (condition) or a +b instead of a + b. Not that it is real…

I did not mean it as a metric but as an indicator what was wrong with the code. - the code is essentially good but all is in one file, you split it up, lines of code stay the same …

Interesting that the amount of code remained essentially unchanged. In my experience it is not unusual that refactoring messy code cuts the number of lines in half.

To add to this. - allow drawing wires backwards from sink to source - allow connecting inputs Also there is a problem with the tests and the simulator that showed up in the SR latc…

No, correct post. But maybe I am misunderstanding the idea behind the post, that is certainly possible.

This reminds me somewhat of OLE, COM, DCOM, ActiveX, ... [1]. You can paste an Excel chart into a Word document and if you update the data in Excel, the chart in Word will update. …

Not the author, but this prevents leaking all URLs you are visiting to agolia. Instead of asking Was this URL submitted to Hacker News? you ask Which URLs have been submitted to He…

There are 120 monomials of degree at most 7 in three variables. If we restrict the coefficients to the integers from -10 to +10, that makes 21^120 possible polynomials. And we need…

You do exactly the same in a monolith, functionality is broken into modules with a public API and you can switch out the implementation at any time if you want or have to.

We do not want to ban using those models, we want to ban the things that enable those models to exist.