neilc

60 ms·

541.
Understanding Strict Aliasing in C99(cellperformance.com)
6 points by neilc 17y ago|0 comments
542.
by neilc 17y ago
p2 might actually point to the same location as p1, so you can't avoid fetching from memory the second time. Not necessarily: if p1 and p2 are of different types (and neither is char * or void *), then the compiler is free to assume that
543.
"A New C Compiler" by Ken Thompson(doc.cat-v.org)
38 points by neilc 17y ago|10 comments
544.
In New York City, Fewer Murders on Rainy Days(nytimes.com)
12 points by neilc 17y ago|15 comments
545.
by neilc 17y ago
And to think, hard drive seek latency has only improved by 2x or 3x.
546.
by neilc 17y ago
The problem with this simplification os the problem-space is that ACID properties cannot be maintained (see CAP) when you start moving to a distributed model. That assumes you need the system to remain available in the presence of partiti
547.
by neilc 17y ago
You should use pg_dumpall rather than pg_dump, typically. Also, remember to use the pg_dump implementation from the new version of PostgreSQL (e.g. 8.4), not the old one (e.g. 8.3). There's also the new (beta) pg_migrator tool which allow
548.
by neilc 17y ago
Except it's not really a "fitting conclusion" to the article: almost all the other factors the article cites are irrelevant or inconsequential. "Too big, too fast", "Too spread out", and so on are just quibbles: the fundamental problem was
549.
by neilc 17y ago
Does anyone have any experience with how VirtualBox performance compares with VMWare?
550.
by neilc 17y ago
Sure, when you checked it didn't have anything. The question is how long that state persisted.
551.
by neilc 17y ago
Actually, Microsoft uses Hadoop. But that's only because it recently purchased the semantic search startup Powerset. Not only is open-source slow to reach the Microsoft back-end, but so is, well, the cloud. Actually, Microsoft's Dryad pro
552.
by neilc 17y ago
Yeah, the real-time web cheerleading at the end of the article was really off-base. someone looking for info on the case will just type "michael jackson death" and find it anyway Exactly; the real question is how long it took for the news
553.
by neilc 17y ago
Standard SQL cannot query transitive relationships, i.e. variable-length chains of joins which continue until some condition is reached Actually it can: SQL:2003 includes recursive queries (WITH RECURSIVE), and several popular database sy
554.
by neilc 17y ago
The grandparent specifically asked about a 1/4 second delay on all touches So? The parent post specifically asserted that "feedback to touch is instant", which is plainly not the case.
555.
by neilc 17y ago
Are you kidding? The 3G has a very noticeable and annoying latency on input (e.g. when entering text, when switching between modes in the Maps app, or when switching between most apps). It's not the end of the world, but feedback is hardly
556.
by neilc 17y ago
If you start the update, and then while it is extracting, disconnect your Internet connection, the update process doesn't try to contact the activation server. http://twitter.com/JeremyCurry/statuses/2211487905
557.
by neilc 17y ago
They typically get paid more than they would ever make if they tried to get a position that matched their skill level at an established company like Apple or Yahoo!. Do you have any evidence for that? A lot of the people I know of who are
558.
by neilc 17y ago
Publishing a full textbook would probably take too much time away from focusing on research, which is the real currency you need to make your tenure case on. Online publication of a cleaned-up course notes and the like would probably make s
559.
by neilc 17y ago
Many great programmers are excellent communicators. In fact, in my experience there is a positive correlation between being a great programmer and being a great communicator (especially in writing). Being able to clearly understand a conc
560.
by neilc 17y ago
the article is quite obviously talking about verbal communication How is that "quite obvious"? The article plainly talks about "communication" in general, not "verbal communication" in particular. That may well be the author's intent, but
561.
by neilc 17y ago
The DbWorld email has slightly more info: http://www.cs.wisc.edu/dbworld/messages/2009-06/1244262718.h... "Rajeev Motwani passed away last night in a swimming pool accident at his home."
562.
by neilc 17y ago
Assuming that your solution is practical, which might well not be the case (O(n^c) is polynomial for any constant c).
563.
by neilc 17y ago
Well, pretty simple: Google for the title of the paper. Some of the hits you'll get will be behind paywalls (like the ACM DL), but there are usually just PDFs you can freely download. Similarly with using Google Scholar and CiteSeer, which
564.
by neilc 17y ago
At the times in the past when I haven't had institutional access, it has only rarely been a problem: the vast majority of the papers I want to read are freely-available online (CiteSeer, Google Scholar, DBLP, etc.). For the rare occasions w
565.
by neilc 17y ago
Twitter is a really simple application to scale. The fact that it took Twitter so long to get it somewhat right is remarkable, but I'm not sure I'd be so keen to look at them as an example of how to design scalable architectures.
566.
by neilc 17y ago
The fact that you have to pay $4000 is a big reason why it is effectively hard for most people to get into TED.
567.
by neilc 17y ago
I think the comparison with prisons is pretty bunk. Students and their parents get to choose which school they'd like to attend; for many people, that means an enormous amount of school choice. With home schooling in many states and the GED
568.
by neilc 17y ago
So you're basically arguing that there are situations when cheating is ethical if it wasn't the intent of the academic honestly policy to disallow it. Let's suppose that is true: what is a case of cheating that academic honesty policies a
569.
by neilc 17y ago
I can perfectly understand people saying 'this assignment/test is ridiculous. I'm not going to put any effort in it and rather copy/cheat and spend my time in a more productive way'. I can understand why someone might say that, but it wou
570.
by neilc 17y ago
Given that Postfix and Exim have much friendlier upstream developers (qmail barely has a maintainer), I don't think it's a surprise that qmail is losing popularity.

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