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Tie::Handle(3)	       Perl Programmers	Reference Guide		Tie::Handle(3)

       Tie::Handle - base class	definitions for	tied handles

	   package NewHandle;
	   require Tie::Handle;

	   @ISA	= qw(Tie::Handle);

	   sub READ { ... }	       # Provide a needed method
	   sub TIEHANDLE { ... }       # Overrides inherited method

	   package main;

	   tie *FH, 'NewHandle';

       This module provides some skeletal methods for handle-tying classes.
       See perltie for a list of the functions required	in tying a handle to a
       package.	 The basic Tie::Handle package provides	a "new"	method,	as
       well as methods "TIEHANDLE", "PRINT", "PRINTF" and "GETC".

       For developers wishing to write their own tied-handle classes, the
       methods are summarized below. The perltie section not only documents
       these, but has sample code as well:

       TIEHANDLE classname, LIST
	   The method invoked by the command "tie *glob, classname".
	   Associates a	new glob instance with the specified class. "LIST"
	   would represent additional arguments	(along the lines of
	   AnyDBM_File and compatriots)	needed to complete the association.

       WRITE this, scalar, length, offset
	   Write length	bytes of data from scalar starting at offset.

       PRINT this, LIST
	   Print the values in LIST

       PRINTF this, format, LIST
	   Print the values in LIST using format

       READ this, scalar, length, offset
	   Read	length bytes of	data into scalar starting at offset.

       READLINE	this
	   Read	a single line

       GETC this
	   Get a single	character

       CLOSE this
	   Close the handle

       OPEN this, filename
	   (Re-)open the handle

       BINMODE this
	   Specify content is binary

       EOF this
	   Test	for end	of file.

       TELL this
	   Return position in the file.

       SEEK this, offset, whence
	   Position the	file.

	   Test	for end	of file.

       DESTROY this
	   Free	the storage associated with the	tied handle referenced by
	   this.  This is rarely needed, as Perl manages its memory quite
	   well. But the option	exists,	should a class wish to perform
	   specific actions upon the destruction of an instance.

       The perltie section contains an example of tying	handles.

       This version of Tie::Handle is neither related to nor compatible	with
       the Tie::Handle (3.0) module available on CPAN. It was due to an
       accident	that two modules with the same name appeared. The namespace
       clash has been cleared in favor of this module that comes with the perl
       core in September 2000 and accordingly the version number has been
       bumped up to 4.0.

perl v5.32.0			  2020-06-14			Tie::Handle(3)


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