ActivePerl Documentation
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Getting Started
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IO::Seekable - supply seek based methods for I/O objects |
NAME
IO::Seekable - supply seek based methods for I/O objects
SUPPORTED PLATFORMS
- Linux
- Solaris
- Windows
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 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 functions:
$io->seek( POS, WHENCE ) $io->sysseek( POS, WHENCE ) $io->tell
SEE ALSO
the perlfunc manpage, I/O Operators in the perlop manpage, the IO::Handle manpage the IO::File manpage
HISTORY
Derived from FileHandle.pm by Graham Barr <gbarr@pobox.com>
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IO::Seekable - supply seek based methods for I/O objects |