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zde

13 karma · joined August 15, 2015

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zde··on An Almost-Secret Algorithm Researchers Used to Break Thousands of RSA Keys
> But since they both used the same program to generate random prime numbers, there’s a higher-than-random chance that their public keys share a prime factor

BS

zde··on Ask HN: What's your favorite elegant/beautiful algorithm?
Knuth's DLX
zde··on Kalashnikov takes on Tesla with retro-look electric 'supercar'
> The Combi has a cruising range of 350 kilometers and can go from 0 to 100 kilometers in roughly 6 seconds, so says the company.

That's Mach 48.59!

zde··on The rise and rise of JSON (2017)
A message format that requires parser to understand both UTF8 and UTF16, cool!
zde··on Obfuscated Tiny C Compiler (2002)
Single pass compiler with back-patching. No intermediate code representation, very simple optimizer (just constant folding and dead code removal). C Preprocessor integrated with parser code. Back-end generates instruction opcodes instead of assembly, eliminating another stage.
zde··on Nuclear fusion on brink of being realised, say MIT scientists
Increasing system's entropy is bad, bad, bad! There's no way back, you know?
zde··on Nuclear fusion on brink of being realised, say MIT scientists
“The aspiration is to have a working power plant in time to combat climate change."

Let's combat global warming by producing even more heat, converting 40% of it to electricity.

zde··on DNS over HTTPS
To understand DNS, you must first understand DNS.
zde··on Why Hasn’t the World Been Destroyed in a Nuclear War Yet?
s/annoying/attacking/
zde··on Intel Responds to Security Research Findings
Reminds me of dieselgate. "Our product is ok unless operated out of spec" didn't work, iirc.
zde··on [dead]
Loved the part that explains how to prevent your servers from being hacked. You must "defend it" with energy drinks.
zde··on A History of Music Notation
Sadly, they miss the important ones.

http://noname.c64.org/tracker/manual_online.php

zde··on Ask HN: How common is a counteroffer for developers who give notice?
It is common, and you will probably get 2 or 3 counteroffers, but (unless you bluffed) none will make you stay.
zde··on Weird Python Integers
Guido said in some interview they used tagged pointers in some project before Python, and it didn't work well. Apparently there is some benefit in "value is always a reference" (less code paths?) that outweights somewhat larger heap pressure.
zde··on Weird Python Integers
That's not weird but pretty common knowledge. IIRC 1-char strings are interned too.
zde··on Region-based Memory Management
> When the server is done processing a request, the allocator goes out of scope and all memory allocated for that request is deallocated.

Forking servers, reinvented.

zde··on Latency matters
Python startup latency is horrible, and unfixable. It got much worse in python3 because it loads much more modules (think of all the unicode crap).
zde··on String.intern()
String.intern() would suck much less if strings had an "IS_INTERNED" flag which would prevent hashtable lookups for already interned strings. Really sad given the insane overhead Java strings have.
zde··on [dead]
Beware: Wikileaks are Russian. She said so.
zde··on Fast Python loops
Likely not, managed code tends to avoid nulls. They are problem in the return path though.
zde··on Fast Python loops
In the time frame spent to test these hacks I would have written a perfect C module that runs circles around it.
zde··on Russia’s FSB Cybersecurity Team Implodes
Could you elaborate? The Wiki page does not seem to mention any other case of radiation poisoning.
zde··on Russia’s FSB Cybersecurity Team Implodes
That's not how state actors kill people.
zde··on Problems I Have with Python
Surprised nobody mentioned the "Python unicide"

http://lucumr.pocoo.org/2014/5/12/everything-about-unicode/

zde··on F.B.I. Arrests Volkswagen Executive on Conspiracy Charges in Emissions Scandal
> had to cheat to pass inspection

What, VW bribed the comission? FBI should arrest them too..

zde··on F.B.I. Arrests Volkswagen Executive on Conspiracy Charges in Emissions Scandal
It's some time since I read the details but I remember that lots of people agreed it was not the actual usage, which btw made detecting it so easy. The acceleration was unrealistically long and slow, for example.
zde··on F.B.I. Arrests Volkswagen Executive on Conspiracy Charges in Emissions Scandal
> separate problem

Nope. When doing business, the only thing that counts is formal, verifiable spec. Crying "You have cheated since I wanted somehing else" should be irrelevant in any country that honors rule of law.

> specifically designing their cars to cheat on the existing test.

Test is a predicate. It can pass or fail, but you can't cheat it.

> actively circumvent the purpose of the test

Hmm, that's probably closest to something I can accept as an argument. Nice. But to circumvent the purpose requires an actual purpose. If the purpose is formal, it's the test itself. And if it's not formal, then it's IMO impossible or very hard to prove that it has been circumvented.

zde··on F.B.I. Arrests Volkswagen Executive on Conspiracy Charges in Emissions Scandal
> Your statement would be true if test performance varied from real-world performance due to environmental factors, but that's not the case.

..or due to engine temperature, speed, gear, gas pedal position and tons of other variables WHICH IS the case. That's why emission requirements are (and must be) test-specific.

zde··on F.B.I. Arrests Volkswagen Executive on Conspiracy Charges in Emissions Scandal
It seems that the main difference between law evasion (which is illegal) and law avoidance (which is legal) is that evasion is concealed.

https://www.crunch.co.uk/blog/startup-advice/2015/05/20/tax-...

Since VW has admitted to detecting test conditions, it's now no longer evading the regulations but avoiding it, right?

zde··on F.B.I. Arrests Volkswagen Executive on Conspiracy Charges in Emissions Scandal
/sarc?
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