wolf550e

73 ms·

901.
by wolf550e 10y ago
JS engines have both sparse and dense representations for arrays and array instances switch from one to another when you insert and delete elements. Details are of course implementation defined.
902.
by wolf550e 10y ago
Memory reads and memory writes are not the same. Linked list insert in the middle needs to do only O(1) writes. But because linked lists preclude memory prefetch, they should not be used these days.
903.
by wolf550e 10y ago
A language with undefined behavior is not suitable for new code in 2016 if you have alternatives.
904.
by wolf550e 10y ago
RISC instructions are all the same size in bits to achieve fast decode speeds. Thus you must choose between 32bit instructions or 16bit instructions. ARM supports both, including function calls from one to the other.
905.
by wolf550e 10y ago
Using a good encoder like LAME?
906.
by wolf550e 10y ago
You wouldn't want to use a browser so old it doesn't support ECDSA with P-256 (e.g. Android < 4.0). There would be a lot of scary stories in the media, but servers can switch to ECDSA (e.g. let's encrypt supports it). Devi
907.
by wolf550e 10y ago
Police have information that a suspect will be at a certain place at a certain time. Maybe from wiretap, maybe from informant. They want to arrest the suspect. They do not want the suspect to know about source of information, or even existe
908.
by wolf550e 10y ago
EDIT: Wrong thread. Meant to post here: https://news.ycombinator.com/item?id=12227507
909.
by wolf550e 10y ago
80 bits of entropy (20 really random hex chars) should be safe enough.
910.
by wolf550e 10y ago
I think you have confused journaled with log structured filesystems.
911.
by wolf550e 10y ago
Even if no one committed fraud (which I don't buy), you agree people were stupid a greedy. Did those people at least lose money? Because ordinary people were badly hurt, and the people responsible appear largely unharmed. Is that the n
912.
by wolf550e 10y ago
There are very profitable things that are illegal to do when selling vegetables in a street market, like fudging the scale. But you say there is no such protection against bad actors when selling billions in securities. Ok, in this Libertar
913.
by wolf550e 10y ago
There has to be criminal fraud somewhere in the process of taking very bad mortgages, transforming them into AAA securities and selling them to pension funds.
914.
by wolf550e 10y ago
"To provide retail banking services to", to not redline[0]. 0 - https://en.wikipedia.org/wiki/Redlining
915.
by wolf550e 10y ago
What's the price of that evaluation board? Can the CPU run faster than in embedded scenario thanks to better cooling?
916.
by wolf550e 10y ago
It's a famous photo: https://en.wikipedia.org/wiki/USS_Enterprise_(CVN-65)#/media...
917.
by wolf550e 10y ago
Unicode code points are 21 bits long. I wonder if something out there stores strings by packing 3 code points per uint64_t.
918.
by wolf550e 10y ago
Isn't fuzzing responsible for most CVEs the last couple of years?
919.
by wolf550e 10y ago
Yes, but the US Navy builds them one at a time, every 5 years, so $2B/year and they are used to guarantee the cooperation of an important ally/partner with the USA instead of with Russia or China. There is a big cost, but there is
920.
by wolf550e 10y ago
Adam Langley answered this on HN: https://news.ycombinator.com/item?id=12051438
921.
by wolf550e 10y ago
Yes, Zubrin has been advocating for this since 1990. https://www.youtube.com/watch?v=3UChuIqIKF4&t=1722 His explanation about the real situation with NASA and why the human spaceflight program has not accomplished anyth
922.
by wolf550e 10y ago
The huge advantage of the metric system is not in its different choice of 1 unit of length, 1 unit of mass, etc. but in the relationships between all units. This is very useful to everyone, even to non-scientists. Illustration: https:&#x2F
923.
by wolf550e 10y ago
DynamoDB is a sharded NoSQL thing with eventually consistent secondary indexes that is nothing like an RDBMS. RDS is very similar to Master-Slave RDBMS servers you would manage yourself in EC2s.
924.
by wolf550e 10y ago
A URL with a long random token is unguessable, same as your login token/session token is unguessable.
925.
by wolf550e 10y ago
Snowden (and the world) would have been much better off if the only thing he took with him was about the illegal domestic spying, but of course he didn't have the time to analyze the data, he just took it all and ran and let journalist
926.
by wolf550e 10y ago
Any person who was allowed by North Korean government to leave the country expecting them to come back are a spy.
927.
by wolf550e 10y ago
What if people want AES-GCM on hardware with AESNI and CHACHA20-POLY1305 on all other hardware? Should those be two protocol versions that are both accepted by everyone and neither is planned to be deprecated? What about Ed25519 vs. Ed448?
928.
by wolf550e 10y ago
Can the Perl output in different syntaxes for different assemblers?
929.
by wolf550e 10y ago
They competed with modern bacteria and lost?
930.
by wolf550e 10y ago
I've never seen anyone store 10 byte IEEE-754 values in memory. People store doubles, and people get upset when compiler optimizations (like when to spill from registers to memory and whether to use one or two instructions for multiply

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