mamememo

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

 %;';;X= %q(x=1; z="%c"%
 32;eval %w(w=N= Merry =128;r=
 z*79+$/; ;p=open" / dev/dsp
 ","w"rescue$_;/ / ;eval"s
 rand(%s)"%$*[ d=0];a=[];s=(r+z+% (%;';;X=#{z* 3}%q(#{X});e val(X))
 +r*=23).l ines.map{|l|l.chop+ r};t=proc{|y|s [y][x-1,w].sca n(/\S
 /){s[y+1][m=x -1+$` .size ,1]== z&&a< <[$&,m, y,s[y
 ][m]=$/]};y};t[ 23];f =(0.. 1071) .map{|i|c,x,y =a.shuffle!. pop;s
 [y][x]=z ;[794-46 .03*i **0.4 +y/k= (3+ra nd*w= 3)/9,[t
 [t[y]-1 ],x,c], (0..y /k).m ap{[y -=k,0.5+x+=k*r and*2-k,?*]}]} ;"|ii
 xCG40_| CK8&d9B ix0,B J?B?G ^K9CG CJ|ii>Ci?9CV; =*-*.sEA.2gA w>dc=
 : `:z:J> s 9QvA:> J taaA>` : @AP;Fa c
 y =Anm|?Bdqr h ?<CDJCD<IU < DuCJ>:d_C? h ?<CWC:'.'+ r
 9 A.*. '>| =*- * .:9i 9A> :JC s :Q> :>9 CJA= g `;C i9A >M". b
 yt es{|c|a+=([% [+. 52ドル-'30&)"/: (7% !*][c%19].or d]* [47,23,11][4 -c
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 ' #{e="\x1 b [ "}H#{e}J # { e}?25")+ " l ";863.do w
 n to(0){|i|b=r + [ "'"*25]*2*"_ ( c )_2010_@mame t t er,@hirekoke "
 ;f.map{ |j,x,v |i<j&&( y,x,c= v.pop| |x;x<0| |x>78| |b[x+y.
 to_i*80]=0<i&&i< 40??#:c)};($><<( i>0?e+"H":T+"h") +b).flush;(p)?4.
 times{N. times{v =8;4.tim es{|l|t =a[l*N* 9+d/N%11 52];t>3 3&&v+=(d
 *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:

[埋込みオブジェクト:http://www.youtube.com/v/r0eaf9iLKxg?fs=1&hl=ja_JP]

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年12月24日).

In RubyKaigi 2010, Chad Fowler introduced Ook! which is a programming language designed for orang-utans.

Ook! program is just like Ruby program, isn't it? Ook. Ook! Ook. Ook? can be interpreted as Ook.Ook!(Ook.Ook?) in Ruby. Thus I tried to embed Ook! program into Ruby program, and succeeded:

require "inline-ook"
puts "Hello, Ruby!" #=> Hello, Ruby!
ook begin
 Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook.
 Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook? Ook. Ook? Ook. Ook.
 Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook.
 Ook. Ook. Ook. Ook? Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook.
 Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook.
 Ook. Ook. Ook. Ook? Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook.
 Ook. Ook. Ook. Ook? Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook.
 Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook? Ook.
 Ook? Ook. Ook? Ook. Ook? Ook. Ook! Ook! Ook? Ook! Ook. Ook?
 Ook! Ook. Ook. Ook? Ook. Ook. Ook. Ook. Ook! Ook. Ook. Ook.
 Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook.
 Ook! Ook. Ook! Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook! Ook.
 Ook. Ook? Ook! Ook! Ook! Ook. Ook! Ook! Ook! Ook! Ook! Ook!
 Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook!
 Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook? Ook! Ook!
 Ook! Ook! Ook! Ook. Ook? Ook. Ook? Ook. Ook! Ook. Ook! Ook!
 Ook! Ook! Ook! Ook! Ook! Ook! Ook! Ook. Ook. Ook? Ook. Ook.
 Ook! Ook. Ook? Ook. Ook? Ook. Ook? Ook. Ook. Ook. Ook. Ook.
 Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook. Ook.
 Ook. Ook. Ook. Ook. Ook! Ook.
ook end #=> Hello, Ook!
puts "Hello, Ruby again!" #=> Hello, Ruby again!

You can write any Ook! program in Ruby program just by surrounding ook begin and ook end. You don't have to use here document. You don't have to apply any patch to ruby interpreter.

$ ruby example/hello.ook.rb
Hello, Ruby!
Hello, Ook!
Hello, Ruby again!

You can install inline-ook as follows. I tested it with 1.8.7-p72 and 1.9.2-p0.

$ gem install inline-ook

translated from mamememo in Japanese (2010年09月07日).

My Quines are sometimes specialized for Japanese. But to attend RubyConf, I should write "global" Quines.

v=0000;eval$s=%q~d=%!^Lcf<LK8, _@7gj*LJ=c5nM)Tp1g0%Xv.,S[<>YoP
4ZojjV)O>qIH1/n[|2yE[>:ieC "%.#% :::##" 97N-A&Kj_K_><wS5rtWk@*a+Y5
yH?b[F^e7C/56j|pmRe+:)B "##% ::##########" O98(Zh)'Iof*nm.,$C5Nyt=
PPu01Avw^<IiQ=5$'D-y? "##: ###############" g6`YT+qLw9k^ch|K'),tc
6ygIL8xI#LNz3v}T=4W "# #. .####:#######" lL27FZ0ij)7TQCI)P7u
}RT5-iJbbG5P-DHB<. " ##### # :############" R,YvZ_rnv6ky-G+4U'
$*are@b4U351Q-ug5 " #######################" 00x8RR%`Om7VDp4M5
PFixrPvl&<p[]1IJ " ############:#### %#####" EGgDt8Lm#;bc4zS^
y]0`_PstfUxOC(q " .#############:##% .## ." /,}.YOIFj(k&q_V
zcaAi?]^lCVYp!; " %% .################. #. " ;s="v=%04o;ev"%
(;v=(v-($*+[45, ":####: :##############% : " ])[n=0].to_i;)%
360)+"al$s=%q#{ "%######. ######### " ;;"%c"%126+$s<<
126}";d.gsub!(/ "##########. #######% " |\s|".*"/,"");;
require"zlib"|| "########### :######. " ;d=d.unpack"C*"
d.map{|c|n=(n|| ":#########: .######: . " )*90+(c-2)%91};
e=["%x"%n].pack " :#######% :###### #: " &&"H*";e=Zlib::
Inflate.inflate( " ######% .####% :: " &&e).unpack("b*"
)[0];22.times{|y| " ####% %### " ;w=(Math.sqrt(1-(
(y*2.0-21)/22)**(; " .###: .#% " ;2))*23).floor;(w*
2-1).times{|x|u=(e+ " %## " )[y*z=360,z]*2;u=u[
90*x/w+v+90,90/w];s[( " #. " ;y*80)+120-w+x]=(""<<
32<<".:%#")[4*u.count(( " . " ;"0"))/u.size]}};;puts\
s+";_ The Qlobe#{" "*18+ ( "# :#######" ;"Copyright(C).Yusuke End\
oh, 2010")}";exit~;_ The Qlobe Copyright(C).Yusuke Endoh, 2010

This quine turns 45 degrees when executed; thus, it will come around when executed eight times (see below). You can make it any-degree turn by giving an integer as an command-line argument.

v=0416;eval$s=%q~d=%!^Lcf<LK8, _@7gj*LJ=c5nM)Tp1g0%Xv.,S[<>YoP
4ZojjV)O>qIH1/n[|2yE[>:ieC ".#####%.#% " 97N-A&Kj_K_><wS5rtWk@*a+Y5
yH?b[F^e7C/56j|pmRe+:)B " .#####%##% :" O98(Zh)'Iof*nm.,$C5Nyt=
PPu01Avw^<IiQ=5$'D-y? " #####%###: #" g6`YT+qLw9k^ch|K'),tc
6ygIL8xI#LNz3v}T=4W " %######## #." lL27FZ0ij)7TQCI)P7u
}RT5-iJbbG5P-DHB<. " :####### ###" R,YvZ_rnv6ky-G+4U'
$*are@b4U351Q-ug5 " ###: : ####" 00x8RR%`Om7VDp4M5
PFixrPvl&<p[]1IJ " %#... #####" EGgDt8Lm#;bc4zS^
y]0`_PstfUxOC(q " %### .#####" /,}.YOIFj(k&q_V
zcaAi?]^lCVYp!; " :. %% .#####" ;s="v=%04o;ev"%
(;v=(v-($*+[45, " :####: :####" ])[n=0].to_i;)%
360)+"al$s=%q#{ " %######. " ;;"%c"%126+$s<<
126}";d.gsub!(/ " ##########. " |\s|".*"/,"");;
require"zlib"|| " ########### " ;d=d.unpack"C*"
d.map{|c|n=(n|| " :#########: " )*90+(c-2)%91};
e=["%x"%n].pack " :#######% " &&"H*";e=Zlib::
Inflate.inflate( " ######% " &&e).unpack("b*"
)[0];22.times{|y| " ####% " ;w=(Math.sqrt(1-(
(y*2.0-21)/22)**(; " .###: " ;2))*23).floor;(w*
2-1).times{|x|u=(e+ " %## " )[y*z=360,z]*2;u=u[
90*x/w+v+90,90/w];s[( " #. " ;y*80)+120-w+x]=(""<<
32<<".:%#")[4*u.count(( " . " ;"0"))/u.size]}};;puts\
s+";_ The Qlobe#{" "*18+ ( " .##### :#" ;"Copyright(C).Yusuke End\
oh, 2010")}";exit~;_ The Qlobe Copyright(C).Yusuke Endoh, 2010
v=0341;eval$s=%q~d=%!^Lcf<LK8, _@7gj*LJ=c5nM)Tp1g0%Xv.,S[<>YoP
4ZojjV)O>qIH1/n[|2yE[>:ieC "#% .#####%." 97N-A&Kj_K_><wS5rtWk@*a+Y5
yH?b[F^e7C/56j|pmRe+:)B " : %#####%##. " O98(Zh)'Iof*nm.,$C5Nyt=
PPu01Avw^<IiQ=5$'D-y? " #####%###: " g6`YT+qLw9k^ch|K'),tc
6ygIL8xI#LNz3v}T=4W " %######## " lL27FZ0ij)7TQCI)P7u
}RT5-iJbbG5P-DHB<. " :####### " R,YvZ_rnv6ky-G+4U'
$*are@b4U351Q-ug5 " :### : " 00x8RR%`Om7VDp4M5
PFixrPvl&<p[]1IJ " %#... " EGgDt8Lm#;bc4zS^
y]0`_PstfUxOC(q " .###: " /,}.YOIFj(k&q_V
zcaAi?]^lCVYp!; " :. %% " ;s="v=%04o;ev"%
(;v=(v-($*+[45, " :####: " ])[n=0].to_i;)%
360)+"al$s=%q#{ " %######. " ;;"%c"%126+$s<<
126}";d.gsub!(/ " ##########" |\s|".*"/,"");;
require"zlib"|| "% ##########" ;d=d.unpack"C*"
d.map{|c|n=(n|| " :#########" )*90+(c-2)%91};
e=["%x"%n].pack " ########" &&"H*";e=Zlib::
Inflate.inflate( "#. ######%" &&e).unpack("b*"
)[0];22.times{|y| "## :####. " ;w=(Math.sqrt(1-(
(y*2.0-21)/22)**(; "#. .###: " ;2))*23).floor;(w*
2-1).times{|x|u=(e+ "% . %## " )[y*z=360,z]*2;u=u[
90*x/w+v+90,90/w];s[( " . #. " ;y*80)+120-w+x]=(""<<
32<<".:%#")[4*u.count(( " : " ;"0"))/u.size]}};;puts\
s+";_ The Qlobe#{" "*18+ ( "#. .##### " ;"Copyright(C).Yusuke End\
oh, 2010")}";exit~;_ The Qlobe Copyright(C).Yusuke Endoh, 2010
v=0264;eval$s=%q~d=%!^Lcf<LK8, _@7gj*LJ=c5nM)Tp1g0%Xv.,S[<>YoP
4ZojjV)O>qIH1/n[|2yE[>:ieC "####% .####" 97N-A&Kj_K_><wS5rtWk@*a+Y5
yH?b[F^e7C/56j|pmRe+:)B "##### : .#####" O98(Zh)'Iof*nm.,$C5Nyt=
PPu01Avw^<IiQ=5$'D-y? "######. #####%" g6`YT+qLw9k^ch|K'),tc
6ygIL8xI#LNz3v}T=4W "####: . %######" lL27FZ0ij)7TQCI)P7u
}RT5-iJbbG5P-DHB<. "#### . :######" R,YvZ_rnv6ky-G+4U'
$*are@b4U351Q-ug5 "####% ###: " 00x8RR%`Om7VDp4M5
PFixrPvl&<p[]1IJ "### %#..." EGgDt8Lm#;bc4zS^
y]0`_PstfUxOC(q "## .. %###" /,}.YOIFj(k&q_V
zcaAi?]^lCVYp!; ":#. . :" ;s="v=%04o;ev"%
(;v=(v-($*+[45, ": : : " ])[n=0].to_i;)%
360)+"al$s=%q#{ "% %#: " ;;"%c"%126+$s<<
126}";d.gsub!(/ "#::#.: %#% " |\s|".*"/,"");;
require"zlib"|| " : :#% " ;d=d.unpack"C*"
d.map{|c|n=(n|| " :% : " )*90+(c-2)%91};
e=["%x"%n].pack " %###%% " &&"H*";e=Zlib::
Inflate.inflate( " ########. " &&e).unpack("b*"
)[0];22.times{|y| " ########. " ;w=(Math.sqrt(1-(
(y*2.0-21)/22)**(; " ##:%###. " ;2))*23).floor;(w*
2-1).times{|x|u=(e+ " %% . " )[y*z=360,z]*2;u=u[
90*x/w+v+90,90/w];s[( " . " ;y*80)+120-w+x]=(""<<
32<<".:%#")[4*u.count(( " " ;"0"))/u.size]}};;puts\
s+";_ The Qlobe#{" "*18+ ( "####. .###" ;"Copyright(C).Yusuke End\
oh, 2010")}";exit~;_ The Qlobe Copyright(C).Yusuke Endoh, 2010
v=0207;eval$s=%q~d=%!^Lcf<LK8, _@7gj*LJ=c5nM)Tp1g0%Xv.,S[<>YoP
4ZojjV)O>qIH1/n[|2yE[>:ieC "#######% .#" 97N-A&Kj_K_><wS5rtWk@*a+Y5
yH?b[F^e7C/56j|pmRe+:)B "##########: : " O98(Zh)'Iof*nm.,$C5Nyt=
PPu01Avw^<IiQ=5$'D-y? "#############. " g6`YT+qLw9k^ch|K'),tc
6ygIL8xI#LNz3v}T=4W "############: . " lL27FZ0ij)7TQCI)P7u
}RT5-iJbbG5P-DHB<. "############# . " R,YvZ_rnv6ky-G+4U'
$*are@b4U351Q-ug5 "############## " 00x8RR%`Om7VDp4M5
PFixrPvl&<p[]1IJ "# %######### " EGgDt8Lm#;bc4zS^
y]0`_PstfUxOC(q " %#: %##: : " /,}.YOIFj(k&q_V
zcaAi?]^lCVYp!; " #. .:#. . " ;s="v=%04o;ev"%
(;v=(v-($*+[45, " : : : : " ])[n=0].to_i;)%
360)+"al$s=%q#{ " :% %#: " ;;"%c"%126+$s<<
126}";d.gsub!(/ " #::#.: %#% " |\s|".*"/,"");;
require"zlib"|| " : :#% " ;d=d.unpack"C*"
d.map{|c|n=(n|| " :% : " )*90+(c-2)%91};
e=["%x"%n].pack " .###%# " &&"H*";e=Zlib::
Inflate.inflate( " ########. " &&e).unpack("b*"
)[0];22.times{|y| " :######## " ;w=(Math.sqrt(1-(
(y*2.0-21)/22)**(; " ##:%###. " ;2))*23).floor;(w*
2-1).times{|x|u=(e+ " %% . " )[y*z=360,z]*2;u=u[
90*x/w+v+90,90/w];s[( " . " ;y*80)+120-w+x]=(""<<
32<<".:%#")[4*u.count(( " " ;"0"))/u.size]}};;puts\
s+";_ The Qlobe#{" "*18+ ( "#######. ." ;"Copyright(C).Yusuke End\
oh, 2010")}";exit~;_ The Qlobe Copyright(C).Yusuke Endoh, 2010
v=0132;eval$s=%q~d=%!^Lcf<LK8, _@7gj*LJ=c5nM)Tp1g0%Xv.,S[<>YoP
4ZojjV)O>qIH1/n[|2yE[>:ieC ":::#######%" 97N-A&Kj_K_><wS5rtWk@*a+Y5
yH?b[F^e7C/56j|pmRe+:)B "################ : " O98(Zh)'Iof*nm.,$C5Nyt=
PPu01Avw^<IiQ=5$'D-y? "####################. " g6`YT+qLw9k^ch|K'),tc
6ygIL8xI#LNz3v}T=4W " .####:############: . " lL27FZ0ij)7TQCI)P7u
}RT5-iJbbG5P-DHB<. "# # :################# . " R,YvZ_rnv6ky-G+4U'
$*are@b4U351Q-ug5 "#######################% " 00x8RR%`Om7VDp4M5
PFixrPvl&<p[]1IJ "######:#### %######### " EGgDt8Lm#;bc4zS^
y]0`_PstfUxOC(q "#######:##% .## .### .. " /,}.YOIFj(k&q_V
zcaAi?]^lCVYp!; "##########. #. .:#. . " ;s="v=%04o;ev"%
(;v=(v-($*+[45, "#########% : : : : " ])[n=0].to_i;)%
360)+"al$s=%q#{ "######### :% %#: " ;;"%c"%126+$s<<
126}";d.gsub!(/ "#######% #::#.: %#% " |\s|".*"/,"");;
require"zlib"|| ":######. : :#% " ;d=d.unpack"C*"
d.map{|c|n=(n|| ".######: . :% : " )*90+(c-2)%91};
e=["%x"%n].pack ":###### #: %###%% " &&"H*";e=Zlib::
Inflate.inflate( ".####% :: ########. " &&e).unpack("b*"
)[0];22.times{|y| " %### ########. " ;w=(Math.sqrt(1-(
(y*2.0-21)/22)**(; " .#% ##:%###. " ;2))*23).floor;(w*
2-1).times{|x|u=(e+ " %% . " )[y*z=360,z]*2;u=u[
90*x/w+v+90,90/w];s[( " . " ;y*80)+120-w+x]=(""<<
32<<".:%#")[4*u.count(( " " ;"0"))/u.size]}};;puts\
s+";_ The Qlobe#{" "*18+ ( "##########." ;"Copyright(C).Yusuke End\
oh, 2010")}";exit~;_ The Qlobe Copyright(C).Yusuke Endoh, 2010
v=0055;eval$s=%q~d=%!^Lcf<LK8, _@7gj*LJ=c5nM)Tp1g0%Xv.,S[<>YoP
4ZojjV)O>qIH1/n[|2yE[>:ieC "% :::#####" 97N-A&Kj_K_><wS5rtWk@*a+Y5
yH?b[F^e7C/56j|pmRe+:)B " .:################" O98(Zh)'Iof*nm.,$C5Nyt=
PPu01Avw^<IiQ=5$'D-y? " ######################" g6`YT+qLw9k^ch|K'),tc
6ygIL8xI#LNz3v}T=4W " #. .####:############: " lL27FZ0ij)7TQCI)P7u
}RT5-iJbbG5P-DHB<. " ##### # :################# . " R,YvZ_rnv6ky-G+4U'
$*are@b4U351Q-ug5 " :############################ " 00x8RR%`Om7VDp4M5
PFixrPvl&<p[]1IJ " ############:#### %######### " EGgDt8Lm#;bc4zS^
y]0`_PstfUxOC(q " %############:### %#: %##: : " /,}.YOIFj(k&q_V
zcaAi?]^lCVYp!; " .################. #. .:#. . " ;s="v=%04o;ev"%
(;v=(v-($*+[45, " :##############% : : : : " ])[n=0].to_i;)%
360)+"al$s=%q#{ " ######### :% %#: " ;;"%c"%126+$s<<
126}";d.gsub!(/ " #######% #::#.: %#" |\s|".*"/,"");;
require"zlib"|| " :######. : :" ;d=d.unpack"C*"
d.map{|c|n=(n|| " .######: . :% " )*90+(c-2)%91};
e=["%x"%n].pack " ######%:# .###%" &&"H*";e=Zlib::
Inflate.inflate( " .####% :: ######" &&e).unpack("b*"
)[0];22.times{|y| " .###: :#####" ;w=(Math.sqrt(1-(
(y*2.0-21)/22)**(; " .#% ##:%#" ;2))*23).floor;(w*
2-1).times{|x|u=(e+ " " )[y*z=360,z]*2;u=u[
90*x/w+v+90,90/w];s[( " " ;y*80)+120-w+x]=(""<<
32<<".:%#")[4*u.count(( " " ;"0"))/u.size]}};;puts\
s+";_ The Qlobe#{" "*18+ ( ":##########" ;"Copyright(C).Yusuke End\
oh, 2010")}";exit~;_ The Qlobe Copyright(C).Yusuke Endoh, 2010
v=0000;eval$s=%q~d=%!^Lcf<LK8, _@7gj*LJ=c5nM)Tp1g0%Xv.,S[<>YoP
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require"zlib"|| "########### :######. " ;d=d.unpack"C*"
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e=["%x"%n].pack " :#######% :###### #: " &&"H*";e=Zlib::
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s+";_ The Qlobe#{" "*18+ ( "# :#######" ;"Copyright(C).Yusuke End\
oh, 2010")}";exit~;_ The Qlobe Copyright(C).Yusuke Endoh, 2010

translated from mamememo in Japanese (2010年09月05日).

Long time no update!

I attended RubyKaigi 2010 at Tsukuba, Japan. It was really exciting!

I made a presentation, "Esoteric, Obfuscated Ruby Programming", which introduces esoteric programming with Ruby. Here is the presentation material:

• slide
• programs (zip)

The slide is written in both Japanese and (weird) English.

Some programs will work on any platform, but some depends on Linux, gcc and its sound driver (/dev/dsp). If you cannot run them yourself, you can look my presentation movie which includes demos (spoken in Japanese, but all the programs are written in Ruby, of course!).

【ニコニコ動画】[rk10][28M03] 超絶技巧 Ruby プログラミング

I appeared on stage three times in this RubyKaigi.

• committer Q&A, as a 1.9.2 assistant release manager. By questioning to the audience, I clarified the fact that many people wants core team to backport only security patches rather than new feature patches.
• Matz's keynote, because I won "Ruby 1.9.2 Award" for contribution to ruby 1.9.2 release! I'm really proud of that.
• my presentation, "Esoteric, Obfuscated Ruby Programming". It seemed to get a favorable reception, from some geeks :-)

translated from mamememo in Japanese (2010年08月29日).