tie VARIABLE,PACKAGENAME,LIST
This function binds a variable to a package that will provide the
implementation for the variable. VARIABLE is the name of the variable to
be enchanted. PACKAGENAME is the name of a package implementing objects
of correct type. Any additional arguments are passed to the "new" method
of the package (meaning TIESCALAR, TIEARRAY, or TIEHASH). Typically these
are arguments such as might be passed to the dbm_open() function of C.
Note that functions such as keys() and values() may return huge array
values when used on large objects, like DBM files. You may prefer to
use the each() function to iterate over such. Example:
tie(%HIST, NDBM_File, '/usr/lib/news/history', 1, 0);
while (($key,$val) = each %HIST) {
print $key, ' = ', unpack('L',$val), "\n";
}
untie(%HIST);
A package implementing an associative array should have the following
methods:
TIEHASH objectname, LIST
DESTROY this
FETCH this, key
STORE this, key, value
DELETE this, key
EXISTS this, key
FIRSTKEY this
NEXTKEY this, lastkey
A package implementing an ordinary array should have the following methods:
TIEARRAY objectname, LIST
DESTROY this
FETCH this, key
STORE this, key, value
[others TBD]
A package implementing a scalar should have the following methods:
TIESCALAR objectname, LIST
DESTROY this
FETCH this,
STORE this, value
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