perlfaq2.pod

ARM上的如果你对底层感兴趣

    *Learning Perl on Win32 Systems
	by Randal L. Schwartz, Erik Olson, and Tom Christiansen,
	    with foreword by Larry Wall

    Perl: The Programmer's Companion
	by Nigel Chapman

    Cross-Platform Perl 
	by Eric F. Johnson

    MacPerl: Power and Ease 
	by Vicki Brown and Chris Nandor, foreword by Matthias Neeracher

=item Task-Oriented

    *The Perl Cookbook
	by Tom Christiansen and Nathan Torkington
	    with foreword by Larry Wall

    Perl5 Interactive Course [2nd edition]
	by Jon Orwant

    *Advanced Perl Programming 
	by Sriram Srinivasan

    Effective Perl Programming 
	by Joseph Hall

=item Special Topics

    *Mastering Regular Expressions
	by Jeffrey Friedl

    How to Set up and Maintain a World Wide Web Site [2nd edition]
	by Lincoln Stein

=back

=head2 Perl in Magazines

The first and only periodical devoted to All Things Perl, I<The
Perl Journal> contains tutorials, demonstrations, case studies,
announcements, contests, and much more.  TPJ has columns on web
development, databases, Win32 Perl, graphical programming, regular
expressions, and networking, and sponsors the Obfuscated Perl
Contest.  It is published quarterly under the gentle hand of its
editor, Jon Orwant.  See http://www.tpj.com/ or send mail to
[e-mail].

Beyond this, magazines that frequently carry high-quality articles
on Perl are I<Web Techniques> (see http://www.webtechniques.com/),
I<Performance Computing> (http://www.performance-computing.com/), and Usenix's
newsletter/magazine to its members, I<login:>, at http://www.usenix.org/.
Randal's Web Technique's columns are available on the web at
http://www.stonehenge.com/merlyn/WebTechniques/.

=head2 Perl on the Net: FTP and WWW Access

To get the best (and possibly cheapest) performance, pick a site from
the list below and use it to grab the complete list of mirror sites.
From there you can find the quickest site for you.  Remember, the
following list is I<not> the complete list of CPAN mirrors.

  http://www.perl.com/CPAN	(redirects to another mirror)
  http://www.perl.org/CPAN
  ftp://ftp.funet.fi/pub/languages/perl/CPAN/
  http://www.cs.ruu.nl/pub/PERL/CPAN/
  ftp://ftp.cs.colorado.edu/pub/perl/CPAN/

=head2 What mailing lists are there for perl?

Most of the major modules (tk, CGI, libwww-perl) have their own
mailing lists.  Consult the documentation that came with the module for
subscription information.  The following are a list of mailing lists
related to perl itself.

If you subscribe to a mailing list, it behooves you to know how to
unsubscribe from it.  Strident pleas to the list itself to get you off
will not be favorably received.

=over 4

=item MacPerl

There is a mailing list for discussing Macintosh Perl.  Contact
"[e-mail]".

Also see Matthias Neeracher's (the creator and maintainer of MacPerl)
webpage at http://www.iis.ee.ethz.ch/~neeri/macintosh/perl.html for
many links to interesting MacPerl sites, and the applications/MPW
tools, precompiled.

=item Perl5-Porters

The core development team have a mailing list for discussing fixes and
changes to the language.  Send mail to
"[e-mail]" with help in the body of the message
for information on subscribing.

=item NTPerl

This list is used to discuss issues involving Win32 Perl 5 (Windows NT
and Win95). Subscribe by mailing [e-mail] with the
message body:

    subscribe Perl-Win32-Users

The list software, also written in perl, will automatically determine
your address, and subscribe you automatically.  To unsubscribe, mail
the following in the message body to the same address like so:

    unsubscribe Perl-Win32-Users

You can also check http://www.activeware.com/ and select "Mailing Lists"
to join or leave this list.

=item Perl-Packrats

Discussion related to archiving of perl materials, particularly the
Comprehensive Perl Archive Network (CPAN). Subscribe by emailing
[e-mail]:

    subscribe perl-packrats

The list software, also written in perl, will automatically determine
your address, and subscribe you automatically.  To unsubscribe, simple
prepend the same command with an "un", and mail to the same address
like so:

    unsubscribe perl-packrats

=back

=head2 Archives of comp.lang.perl.misc

Have you tried Deja News or Alta Vista?

ftp.cis.ufl.edu:/pub/perl/comp.lang.perl.*/monthly has an almost
complete collection dating back to 12/89 (missing 08/91 through
12/93).  They are kept as one large file for each month.

You'll probably want more a sophisticated query and retrieval mechanism
than a file listing, preferably one that allows you to retrieve
articles using a fast-access indices, keyed on at least author, date,
subject, thread (as in "trn") and probably keywords.  The best
solution the FAQ authors know of is the MH pick command, but it is
very slow to select on 18000 articles.

If you have, or know where can be found, the missing sections, please
let [e-mail] know.

=head2 Where can I buy a commercial version of Perl?

In a sense, Perl already I<is> commercial software: It has a licence
that you can grab and carefully read to your manager. It is
distributed in releases and comes in well-defined packages. There is a
very large user community and an extensive literature.  The
comp.lang.perl.* newsgroups and several of the mailing lists provide
free answers to your questions in near real-time.  Perl has
traditionally been supported by Larry, dozens of software designers
and developers, and thousands of programmers, all working for free
to create a useful thing to make life better for everyone.

However, these answers may not suffice for managers who require a
purchase order from a company whom they can sue should anything go
wrong.  Or maybe they need very serious hand-holding and contractual
obligations.  Shrink-wrapped CDs with perl on them are available from
several sources if that will help.

Or you can purchase a real support contract.  Although Cygnus historically
provided this service, they no longer sell support contracts for Perl.
Instead, the Paul Ingram Group will be taking up the slack through The
Perl Clinic.  The following is a commercial from them:

"Do you need professional support for Perl and/or Oraperl?  Do you need
a support contract with defined levels of service?  Do you want to pay
only for what you need?

"The Paul Ingram Group has provided quality software development and
support services to some of the world's largest corporations for ten
years.  We are now offering the same quality support services for Perl
at The Perl Clinic.  This service is led by Tim Bunce, an active perl
porter since 1994 and well known as the author and maintainer of the
DBI, DBD::Oracle, and Oraperl modules and author/co-maintainer of The
Perl 5 Module List.  We also offer Oracle users support for Perl5
Oraperl and related modules (which Oracle is planning to ship as part
of Oracle Web Server 3).  20% of the profit from our Perl support work
will be donated to The Perl Institute."

For more information, contact the The Perl Clinic:

    Tel:    [phone]
    Fax:    [phone]
    Web:    http://www.perl.co.uk/
    Email:  [e-mail] or [e-mail]

See also www.perl.com for updates on training and support.

=head2 Where do I send bug reports?

If you are reporting a bug in the perl interpreter or the modules
shipped with perl, use the I<perlbug> program in the perl distribution or
mail your report to [e-mail].

If you are posting a bug with a non-standard port (see the answer to
"What platforms is Perl available for?"), a binary distribution, or a
non-standard module (such as Tk, CGI, etc), then please see the
documentation that came with it to determine the correct place to post
bugs.

Read the perlbug(1) man page (perl5.004 or later) for more information.

=head2 What is perl.com?  perl.org?  The Perl Institute?

The perl.com domain is managed by Tom Christiansen, who created it as a
public service long before perl.org came about.  Despite the name, it's a
pretty non-commercial site meant to be a clearinghouse for information
about all things Perlian, accepting no paid advertisements, bouncy
happy gifs, or silly java applets on its pages.  The Perl Home Page at
http://www.perl.com/ is currently hosted on a T3 line courtesy of Songline
Systems, a software-oriented subsidiary of O'Reilly and Associates.

perl.org is the official vehicle for The Perl Institute.  The motto of
TPI is "helping people help Perl help people" (or something like
that).  It's a non-profit organization supporting development,
documentation, and dissemination of perl.  

=head2 How do I learn about object-oriented Perl programming?

L<perltoot> (distributed with 5.004 or later) is a good place to start.
Also, L<perlobj>, L<perlref>, and L<perlmod> are useful references,
while L<perlbot> has some excellent tips and tricks.

=head1 AUTHOR AND COPYRIGHT

Copyright (c) 1997, 1998 Tom Christiansen and Nathan Torkington.
All rights reserved.

When included as an integrated part of the Standard Distribution
of Perl or of its documentation (printed or otherwise), this works is
covered under Perl's Artistic Licence.  For separate distributions of
all or part of this FAQ outside of that, see L<perlfaq>.

Irrespective of its distribution, all code examples here are public
domain.  You are permitted and encouraged to use this code and any
derivatives thereof in your own programs for fun or for profit as you
see fit.  A simple comment in the code giving credit to the FAQ would
be courteous but is not required.