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

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


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->setpos(POS) uses that value to return to a previously visited position.

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


  $io->seek( POS, WHENCE )

  $io->sysseek( POS, WHENCE )

  $io->tell


SEE ALSO

perlfunc, perlop/``I/O Operators'', the IO::Handle manpage the IO::File manpage


HISTORY

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

Programminig
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