Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

Re: Maintaining uniqueness across millions of items

by ChuckularOne (Prior)
on Aug 13, 2004 at 13:03 UTC ( [id://382649]=note: print w/replies, xml ) Need Help??


in reply to Maintaining uniqueness across millions of items

There is always the possibility that you could generate the numbers and create a checkssm that is significantly smaller than 16 digits.

Then you would only have to compare the checksums (and hold them in memory) for uniquness.

The only caveat being that in a list of 600,000,000 keys you, most likely, will have some codes/numbers which are unique but have the same checksum.

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://382649]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others scrutinizing the Monastery: (7)
As of 2024-03-28 12:37 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found