Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much
 
PerlMonks  

perlfunc:ref

by gods (Initiate)
on Aug 24, 1999 at 22:42 UTC ( [id://246]=perlfunc: print w/replies, xml ) Need Help??

ref

See the current Perl documentation for ref.

Here is our local, out-dated (pre-5.6) version:


ref - find out the type of thing being referenced



ref EXPR

ref



Returns a TRUE value if EXPR is a reference, FALSE otherwise. If EXPR is not specified, $_ will be used. The value returned depends on the type of thing the reference is a reference to. Builtin types include:

    REF
    SCALAR
    ARRAY
    HASH
    CODE
    GLOB

If the referenced object has been blessed into a package, then that package name is returned instead. You can think of ref() as a typeof() operator.

    if (ref($r) eq "HASH") {
        print "r is a reference to a hash.\n";
    }
    if (!ref($r)) {
        print "r is not a reference at all.\n";
    }

See also the perlref manpage.


Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others goofing around in the Monastery: (4)
As of 2024-12-10 00:03 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Which IDE have you been most impressed by?













    Results (55 votes). Check out past polls.