From: Wild Karl-Heinz <kh.wild@...>
Date: 2002-03-19T20:43:49+09:00
Subject: Random generated testdata ...

Hallo,

I use a script to generate test data.
There are a routine to make sure that only
one number will be generated.

The method is not really fast.
Is there an idea to make it faster?

<code>
$names = IO.readlines( "/usr/share/dict/words" );

def getname
   ret = ''
   while String( ret ).length <= 0
      ret = $names[ rand( $names.size ) ].chop.capitalize!
   end
   ret
end

# a new hash for saving unique numbers
kfz_nr = Hash.new

100000.times do | i |
   nname = getname

   # This part seems to be slow
   kfz = rand( 999999 );
   while kfz_nr[ kfz ] do
      kfz = rand( 999999 );
   end
   
   kfz_nr[ kfz ] = 1
   puts "Insert into cars Values (0, '#{nname}', #{kfz} );"
end
</code>

-- 
Karl-Heinz