CGI/Perl Guide | Learning Center | Forums | Advertise | Login
Site Search: in

  Main Index MAIN
INDEX
Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN

Home: Perl Programming Help: Frequently Asked Questions:
Why don't my tied hashes make the defined/exists d

 



Jasmine
Administrator

Jan 19, 2001, 3:29 PM

Post #1 of 1 (1862 views)
Why don't my tied hashes make the defined/exists d Can't Post

(From the Perl FAQ)

Why don't my tied hashes make the defined/exists distinction?

They may or may not implement the EXISTS() and DEFINED() methods differently. For example, there isn't the concept of undef with hashes that are tied to DBM* files. This means the true/false tables above will give different results when used on such a hash. It also means that exists and defined do the same thing with a DBM* file, and what they end up doing is not what they do with ordinary hashes.


 
 


Search for (options) Powered by Gossamer Forum v.1.2.0

Web Applications & Managed Hosting Powered by Gossamer Threads
Visit our Mailing List Archives