0001 #
0002 # Example of Ruby hash
0003 #
0004 scarborough = {  # declare and initialize a hash table
0005     "P"=>"parsley",
0006     "S"=>"sage",
0007     "R"=>"rosemary",
0008     "T"=>"thyme"
0009 }
0010 puts scarborough  # output the hash table
0011 puts "\n"
0012 for k in scarborough.keys  # output hash table items
0013     puts k + "=>" + scarborough[k]  # 1-by-1
0014 end
0015 puts "\n"
0016 for k in scarborough.keys.sort  # output sorted hash table items
0017     puts k + "=>" + scarborough[k]  # 1-by-1
0018 end