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B.21. Tied Variables
Do you remember how the Chapter 16, "Simple Databases") is "magically" connected to a
file, so that accesses to the hash are really working with the
corresponding DBM
file? You can actually make any variable magical in that way. A
tied
variable may be accessed like any other, but using your own code
behind the scenes. So you could make a scalar that is really stored
on a remote machine, or an array that always stays sorted. See the
perltie manpage.
