Beta
×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Comments

top

Google x86 Native Browser Client Maybe Not So Crazy After All

bsy_at_play Re:Won't work on 64-bit Windows (332 comments)

32-bit browsers running on 64-bit windows can launch another 64-bit executable.

more than 3 years ago
top

First Acoustic Black Hole Created

bsy_at_play Re:Sort of Hawking Radiation (165 comments)

heisenberg: uncertainty in energy times uncertainty in time has a lower bound. what is the energy of the phonons? given the small time that heisenberg allows the virtual phonon pairs to exist, how far can the phonons travel? without actually working out the numbers, my seat of the pants guess is that the number of virtual phonon pairs for which one member crosses the acoustic event horizon will be vanishingly small.

more than 5 years ago
top

Solving the Knight's Tour Puzzle In 60 Lines of Python

bsy_at_play one line of python (kinda slow) (311 comments)

$ time python -c "import sys; sys.stdout.write((lambda size, sizesq, allp, openclose: ((lambda mkbrd, brd, mv, av, d, finished: ((lambda h: h(h, mkbrd(), 0, 0, 0)) (lambda h, b, r, c, v: [ lambda: ([ lambda:'', lambda: ((lambda nb, nv: d([lambda:h(h, nb, r-2, c-1, nv), lambda:h(h, nb, r-1, c-2, nv), lambda:h(h, nb, r-2, c+1, nv), lambda:h(h, nb, r-1, c+2, nv), lambda:h(h, nb, r+1, c-2, nv), lambda:h(h, nb, r+2, c-1, nv), lambda:h(h, nb, r+1, c+2, nv), lambda:h(h, nb, r+2, c+1, nv)]) ) (mv(b,r,c,v), v+1))] [av(b,r,c)]()), lambda: brd(b)][finished(v,r,c)]()) )) (lambda: [-1] * sizesq, lambda b: '\n'.join((''.join('%4d' % v for v in b[i:i+size])) for i in range(0,sizesq,size)) + '\n\n', lambda b, r, c, v: b[:r*size+c] + [v] + b[r*size+c+1:], lambda b, r, c: int(r >=0 and r = 0 and c 0)]())), lambda fl: ''.join(f() for f in fl)][allp], [lambda v,r,c: int(v==sizesq), lambda v,r,c: int(v==sizesq and r==0 and c==0)][openclose] ))) (int(sys.argv[1]), int(sys.argv[1])*int(sys.argv[1]), int(sys.argv[2]), int(sys.argv[3])))" 6 0 1
      0 7 4 13 2 29
      5 12 1 30 23 14
      8 35 6 3 28 31
    11 18 9 24 15 22
    34 25 20 17 32 27
    19 10 33 26 21 16

real 0m43.784s
user 0m36.254s
sys 0m0.052s
$

arguments: the 6 is the size of the board, 0 means to print the first found rather than all, and the 1 means to look for a closed path rather than an open path.

more than 5 years ago

Submissions

bsy_at_play hasn't submitted any stories.

Journals

bsy_at_play has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>