Ruby TRICKS of 2013

Ruby was initially designed to be a successor of the Perl programming language, which also means that it inherited a lot of Perl's expressiveness. To celebrate this, the TRIC¹ contest was invented:

The best submissions were awarded at the Japanese Ruby Kaigi conference and also included in the Ruby source, for educational purpose. The winning submissions² of 2013 were:

¹ Transcendental Ruby Imbroglio Contest
² All code is MIT licensed, Copyright (c) 2013, TRICK Winners and Judges

1st Place: "Best pangram"

By kinaba (remarks)

The program prints each ASCII character from 0x20 ' ' to 0x7e '~' exactly once:

!@THEqQUICKbBROWNfFXjJMPSvVLAZYDGgkyz&[%r{\"}mosx,4>6]|?'while(putc 3_0-~$.+=9/2^5;)<18*7and:`#

While this would not be such a complicated thing to accomplish, reconsider the program after reading the second constraint!

The program contains each ASCII character from 0x20 ' ' to 0x7e '~' exactly once.

This is what it outputs:

!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~%

2nd Place: "Most Readable"

By Shinichiro Hamaji (remarks)

begin with an easy program.
you should be able to write
a program unless for you,
program in ruby language is
too difficult. At the end
of your journey towards the
ultimate program; you must
be a part of a programming
language. You will end if
you != program

This program does exactly nothing, but nevertheless, it is all valid syntax!

3rd Place: "Most classic"

By Yusuke Endoh (remarks)

Guess what this one does:

          eval$C=%q(at_exit{
          open("/dev/dsp","wb"){|g|h=[0]*80
          $><<"\s"*18+"eval$C=%q(#$C);S=%:"
          (S<<m=58).lines{|l|s=[128]*n=20E2
          t=0;           h.map!{|v|d=?!==l[
          t]?1                         :(l[
          t]==                         ?#)?
          0*v=                         6:03
          (v<1                         ?[]:
          0..n                         -1).
          each                         {|z|
          s[z]                         +=2*
  M.sin(($*[0]                         ||1)
.to_f*M.sin(y=                 40*(z+m)*2**
(t/12E0)/463)+               y)*(v-z*d/n)};
t+=1;v-d};m+=                n;g.flush<<(s.
  pack"C*");                 puts(l)}}};M= 
                               Math);S=%:

         Jesu, Joy of Man's Desiring
            Johann Sebastian Bach

  #
  |                       #
  |                         #
              #      #    #   #
              |      |    |      #
              |      |   #     #
           #           #  #    #
           |           |  |        #
           |           |    #    #
      #                   #   #  #
      |                   |   |       #
      |                   | #        #
           #           #      #       #
           |           |      |  #
           |           |  #   #
           #      #    #  #
           |      |    |    #
           |      |  #        #
    #           #      #       #
    |           |      |         #
    |           |        #         #
      #              #    #      #
      |              |    |    #
      |              |        #
       #           #   #    #
       |           |   |      #
       |          #|      #
         #      #  |     #
         |      |  |      #
         |         | #      #
             #  #    #      #
             |  |        #  |
             |  |         # #
         #               #  #  #
         |               |  | #
         |               |  #
              #      #    #   #
              |      |    #   |
              |          #  # |
           #  #           #   #
           |  |           |      #
           |  |          #     #
       #               #  #    #
       |               |  |        #
       |               |    #    #
      #                   #   #  #
      |                   |   |       #
      |                   | #        #
           #           #      #       #
           |           |      |  #
           |           |  #   #
         #        #    #  #
         |        |    |    #
         |        |       #   #
       #           #   #    #
       |           |        |    #
       |           |     #     #
        #              #  #   #
        |              |  | #
        |              #  #
         #      #    #
         |      |    |    #
         |         # |   #
  #               #  #    #
  |               |  |    |
  |               |  |    |
  |               |  |    |
  |               |  |    |
  |               |  |    |
  |               |  |    |
  |               |  |    |
  |               |  |    |
  |               |  |    |
  |               |  |    |
  |               |  |    :

Right! It will play some loveley classical music! Run it with:³

$ padsp ruby entry.rb

³ See Limitations for how to play it on Mac OS

Also See

Other Awarded Submissions

More Idiosyncratic Ruby