Language: C C++ D Haskell Lua OCaml PHP Perl Plain Text Python Ruby Scheme Tcl Proc.new { |yin, yang| yin[yang] }[ Proc.new { |cc| puts ""; print "@"; cc }[callcc { |cc| cc }], Proc.new { |cc| print "*"; cc }[callcc { |cc| cc }]] Private [?] Run code