


IO::Seekable(3p) Perl Programmers Reference GuideIO::Seekable(3p)


NAME
       IO::Seekable - supply seek based methods for I/O objects

SYNOPSIS
           use IO::Seekable;
           package IO::Something;
           @ISA = qw(IO::Seekable);


DESCRIPTION
       `IO::Seekable' does not have a constructor of its own as
       it is intended to be inherited by other `IO::Handle' based
       objects. It provides methods which allow seeking of the
       file descriptors.

       If the C functions fgetpos() and fsetpos() are available,
       then `$io-<getpos' returns an opaque value that represents
       the current position of the IO::File, and `$io->set-
       pos(POS)' uses that value to return to a previously vis-
       ited position.

       See the perlfunc manpage for complete descriptions of each
       of the following supported `IO::Seekable' methods, which
       are just front ends for the corresponding built-in func-
       tions:

         $io->seek( POS, WHENCE )
         $io->sysseek( POS, WHENCE )
         $io->tell


SEE ALSO
       the perlfunc manpage, the I/O Operators entry in the per-
       lop manpage, the IO::Handle manpage the IO::File manpage

HISTORY
       Derived from FileHandle.pm by Graham Barr
       <gbarr@pobox.com>



















2000-04-06                 perl v5.6.0                          1


