Merry Quine-mas 2010

Tonight is the eve of the anniversary of W. V. Quine's death. (in Japanese time zone :-)

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   to_i*80]=0<i&&i<   40??#:c)};($><<(   i>0?e+"H":T+"h")   +b).flush;(p)?4.
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    *0.11*4**(t/24     .0-l%3))%8<=>4     };d+=1;p<<[16*     v].pack("C*")}
      ;p.flush}:         sleep(0.1)         };puts)*""         ;);eval(X)
'''''''''''''''''''''''''_(c)_2010_@mametter,@hirekoke'''''''''''''''''''''''''

Save the code as "quinemas2010.rb" and run it under an terminal bigger than 80 x 24. You can use cygwin if you're a windows user. You may need to use "aoss" or "padsp" if you're using Un*x. I tested it with ruby 1.8.7p299 and 1.9.2p0.

A screencast for you guys who are lazy:

FAQ

• Q. Is this a pseudo-Quine because its output is not strictly equal to the code?
  • A. Yes. This is a Quine generator. Run it as follows. You'll find tmp1.rb is certainly a Quine.

$ ruby quinemas2010.rb 0 > tmp1.rb
$ ruby tmp1.rb 0 > tmp2.rb
$ diff tmp1.rb tmp2.rb

• Q. What does the command line argument mean?

  • A. A random seed which affects how to snow.

• Q. How does it animate?

  • A. It just prints each frame with the aid of escape sequence. Because it uses only ANSI escape code, it works on almost all terminal emulator (but not cmd.exe).

• Q. How does it play a sound?

  • A. It writes a sound wave directly to /dev/dsp (see Open Sound System).

translated from mamememo in Japanese (2010-12-24).