limmeau

58 ms·

1. 541.▲
   by limmeau 17y ago

   Yes, unless you find premises to drop, thus changing the problem. Sorting is Omega(n log n) under the premise that all you have is a computable ordering relation. Radix sort removes that premise and reaches a different lower bound. In the p
2. 542.▲
   by limmeau 17y ago

   Before reading, I thought they had found a faster sequence of disk transfers (stop the press etc) -- but it turns out the article is just about generating the same sequence of moves in less time, given the C compilers of late-90s workstatio
3. 543.▲
   by limmeau 17y ago

   Hmm yes... fairly quickly, one runs out of large rich countries at the beginnings of twenty-first centuries to draw parallels from. I liked A Mind Forever Voyaging, though, which is about an attempt to do c) properly.
4. 544.▲
   by limmeau 17y ago

   I see some possibilities to test hypotheses like "$MEASURE will achieve $GOAL" a) Gather historical data where $MEASURE was attempted and see whether $GOAL was reached. This can give results like "$MEASURE is positively correlated with achi
5. 545.▲
   by limmeau 17y ago

   At the core, there seems to be just a PKI for RSA keys in terms of "yes, X is a friend of mine" attestations, not unlike the PGP web of trust. So I'm optimistic that your distributed singing sessions (e.g.) could use the DSNP infrastructure
6. 546.▲
   by limmeau 17y ago

   I'm happy to see an approach to social networking that doesn't require uploading personal data about millions of people into one database. However, the cryptography in the source code (encrypt.cpp) seems to be hand-made from RSA, SHA1 and R
7. 547.▲
   by limmeau 17y ago

   Totally. Thanks.
8. 548.▲
   by limmeau 17y ago

   Aw, I wish branching snapshots were among the new features[1]. [1] http://forums.virtualbox.org/viewtopic.php?f=15&t=18818&... Edit: URL. I seem to have managed to pick up my Aquamacs' kill ring during cmd-tab switching. Interesting.
9. 549.▲
   by limmeau 17y ago

   Thanks for writing that up in spite of the unspectacular negative finding.
10. 550.▲
    by limmeau 17y ago

    Even taking into account that child abuse is as bad as child abuse is, blacklisting child abuse pictures at the ISP level is unnecessary and counter-productive: - Experiments by civil rights activists have demonstrated that it usually only
11. 551.▲
    by limmeau 17y ago

    This seems to be relevant: http://lists.cs.uiuc.edu/pipermail/cfe-dev/2008-August/00267... In short: per default, you get copies of captured variables, but you can mark variables to be writable from blocks. In order to be able to call a b
12. 552.▲
    by limmeau 17y ago

    I don't understand the "stack frames are exempt from GC" thing -- do you mean the stack frames do not contribute reachability roots to the garbage collection or that the stack frames themselves are not garbage-collected?
13. 553.▲
    by limmeau 17y ago

    What can we learn from this challenge? - decide what your benchmark shall cover and what not (computation? I/O? startup time?) - publish compiler version and compiler options - if the benchmark involves disk i/o, start with disk cache in a
14. 554.▲
    by limmeau 17y ago

    What do you suggest as a replacement for nullable fields?
15. 555.▲
    by limmeau 17y ago

    In C#4.0, apparently you can declare JOption as interface NOption<out T> { ... } such that NOption<Mysub> is a subtype of NOption<Mysuper>. Still messy to read, though, and C# has ?-types anyway.
16. 556.▲
    by limmeau 17y ago

    "your only goal should be" or "I want you to"? Perhaps they just want to be able to program in a decent statically-typed language with a GC and a JIT compiler and Gtk bindings?
17. 557.▲
    by limmeau 17y ago

    There is bound to be some wrangling with the returned value if the case of "something was returned" needs different treatment from "nothing was returned" in the program's design. However, I agree that match perform_foo() with
18. 558.▲
    by limmeau 17y ago

    If a student has a reason to hand in an archived answer instead of learning something by solving the problem himself, there's already something going wrong, and creating fresh exercises each week attacks a symptom only. Why do students use
19. 559.▲
    by limmeau 17y ago

    Regarding "It makes code more verbose": while "new JSome<LongSuperclassName>(myValue)" is certainly more verbose than necessary, I still think that the one bit of information "this method returns Foos" vs "this method returns Foos o
20. 560.▲
    by limmeau 17y ago

    But there's an important difference: 0 is still a number and can safely be added to other numbers, "" is a string which can safely be concatenated with other strings. Java null, however, does not denote a neutral value, it denotes an absenc
21. 561.▲
    by limmeau 17y ago

    I agree with the author that having an option datatype makes the intention "this method returns some Foo or nothing" clear. However, the suggested encoding of an option type in Java blends poorly with subtyping because a JOption<MySubty
22. 562.▲
    by limmeau 17y ago

    Null is an element of any given set? I'm not sure I understand you there. Do you mean that e.g. "the absence of a natural number" is a member of the set of natural numbers?
23. 563.▲
    by limmeau 17y ago

    org-mode is really useful, and you can start with a subset. I usually use - headline hierarchies (lines starting with stars) - itemized lists (starting with a dash) or with checkboxes (starting with '- [ ]') - checkbox counters in headlines
24. 564.▲
    by limmeau 17y ago

    With all the 64-bit happiness: does anyone know whether the first Intel Core Duo (Yonah)-based MacBooks are still supported?
25. 565.▲
    by limmeau 17y ago

    Can you write Python/S60 programs on the phone's keyboard? (Honestly, I don't know)
26. 566.▲
    by limmeau 17y ago

    A software equivalent could be a GUI program which steers the mouse pointer to the close-button in the window's title bar and synthesizes a click there.
27. 567.▲
    by limmeau 17y ago

    They got 0.9% in Germany, which, given that Germany contains almost nine times the population of Sweden, is even more, although less impressive.
28. 568.▲
    by limmeau 17y ago

    And UNIX was a fun hack to play "Spacewar" :)
29. 569.▲
    by limmeau 17y ago

    And that piece has just an 8,9" screen and an ARM processor.
30. 570.▲
    by limmeau 17y ago

    I've just tried a simple case in which a program prints the output of an integer division and the output of an integer addition which overflows in 32-bit integers. (Clue C version) 7/3 is 2, remainder is 1 2147483648 + 21474836