perltoc.pod

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=item Data Members as Variables

=back

=item NOTES

=over 4

=item Object Terminology

=back

=item SEE ALSO

=item AUTHOR AND COPYRIGHT

=item COPYRIGHT

=over 4

=item Acknowledgments

=back

=back

=head2 perltooc - Tom's OO Tutorial for Class Data in Perl

=over 4

=item DESCRIPTION

=item Class Data in a Can

=item Class Data as Package Variables

=over 4

=item Putting All Your Eggs in One Basket

=item Inheritance Concerns

=item The Eponymous Meta-Object

=item Indirect References to Class Data

=item Monadic Classes

=item Translucent Attributes

=back

=item Class Data as Lexical Variables

=over 4

=item Privacy and Responsibility 

=item File-Scoped Lexicals

=item More Inheritance Concerns

=item Locking the Door and Throwing Away the Key

=item Translucency Revisited

=back

=item NOTES

=item SEE ALSO

=item AUTHOR AND COPYRIGHT

=item ACKNOWLEDGEMENTS

=item HISTORY

=back

=head2 perlbot - Bag'o Object Tricks (the BOT)

=over 4

=item DESCRIPTION

=item OO SCALING TIPS

=item INSTANCE VARIABLES

=item SCALAR INSTANCE VARIABLES

=item INSTANCE VARIABLE INHERITANCE

=item OBJECT RELATIONSHIPS

=item OVERRIDING SUPERCLASS METHODS

=item USING RELATIONSHIP WITH SDBM

=item THINKING OF CODE REUSE

=item CLASS CONTEXT AND THE OBJECT

=item INHERITING A CONSTRUCTOR

=item DELEGATION

=item SEE ALSO

=back

=head2 perlstyle - Perl style guide

=over 4

=item DESCRIPTION

=back

=head2 perlcheat - Perl 5 Cheat Sheet

=over 4

=item DESCRIPTION

=over 4

=item The sheet

=back

=item ACKNOWLEDGEMENTS

=item AUTHOR

=item SEE ALSO

=back

=head2 perltrap - Perl traps for the unwary

=over 4

=item DESCRIPTION

=over 4

=item Awk Traps

=item C/C++ Traps

=item Sed Traps

=item Shell Traps

=item Perl Traps

=item Perl4 to Perl5 Traps

Discontinuance, Deprecation, and BugFix traps, Parsing Traps, Numerical
Traps, General data type traps, Context Traps - scalar, list contexts,
Precedence Traps, General Regular Expression Traps using s///, etc,
Subroutine, Signal, Sorting Traps, OS Traps, DBM Traps, Unclassified Traps

=item Discontinuance, Deprecation, and BugFix traps

Symbols starting with "_" no longer forced into main, Double-colon valid
package separator in variable name, 2nd and 3rd args to C<splice()> are now
in scalar context, Can't do C<goto> into a block that is optimized away,
Can't use whitespace as variable name or quote delimiter, C<while/if BLOCK
BLOCK> gone, C<**> binds tighter than unary minus, C<foreach> changed when
iterating over a list, C<split> with no args behavior changed, B<-e>
behavior fixed, C<push> returns number of elements in resulting list, Some
error messages differ, C<split()> honors subroutine args, Bugs removed

=item Parsing Traps

Space between . and = triggers syntax error, Better parsing in perl 5,
Function parsing, String interpolation of C<$#array> differs, Perl guesses
on C<map>, C<grep> followed by C<{> if it starts BLOCK or hash ref

=item Numerical Traps

Formatted output and significant digits, Auto-increment operator over
signed int limit deleted, Assignment of return values from numeric equality
tests doesn't work, Bitwise string ops

=item General data type traps

Negative array subscripts now count from the end of array, Setting
C<$#array> lower now discards array elements, Hashes get defined before
use, Glob assignment from localized variable to variable, Assigning
C<undef> to glob, Changes in unary negation (of strings), Modifying of
constants prohibited, C<defined $var> behavior changed, Variable Suicide

=item Context Traps - scalar, list contexts

Elements of argument lists for formats evaluated in list context,
C<caller()> returns false value in scalar context if no caller present,
Comma operator in scalar context gives scalar context to args, C<sprintf()>
prototyped as C<($;@)>

=item Precedence Traps

LHS vs. RHS of any assignment operator, Semantic errors introduced due to
precedence, Precedence of assignment operators same as the precedence of
assignment, C<open> requires parentheses around filehandle, C<$:>
precedence over C<$::> gone, Precedence of file test operators documented,
C<keys>, C<each>, C<values> are regular named unary operators

=item General Regular Expression Traps using s///, etc.

C<s'$lhs'$rhs'> interpolates on either side, C<m//g> attaches its state to
the searched string, C<m//o> used within an anonymous sub, C<$+> isn't set
to whole match, Substitution now returns null string if it fails,
C<s`lhs`rhs`> is now a normal substitution, Stricter parsing of variables
in regular expressions, C<m?x?> matches only once, Failed matches don't
reset the match variables

=item Subroutine, Signal, Sorting Traps

Barewords that used to look like strings look like subroutine calls,
Reverse is no longer allowed as the name of a sort subroutine, C<warn()>
won't let you specify a filehandle

=item OS Traps

SysV resets signal handler correctly, SysV C<seek()> appends correctly

=item Interpolation Traps

C<@> always interpolates an array in double-quotish strings, Double-quoted
strings may no longer end with an unescaped $, Arbitrary expressions are
evaluated inside braces within double quotes, C<$$x> now tries to
dereference $x, Creation of hashes on the fly with C<eval "EXPR"> requires
protection, Bugs in earlier perl versions, Array and hash brackets during
interpolation, Interpolation of C<\$$foo{bar}>, C<qq()> string passed to
C<eval> will not find string terminator

=item DBM Traps

Perl5 must have been linked with same dbm/ndbm as the default for
C<dbmopen()>, DBM exceeding limit on the key/value size will cause perl5 to
exit immediately

=item Unclassified Traps

C<require>/C<do> trap using returned value, C<split> on empty string with
LIMIT specified

=back

=back

=head2 perldebtut - Perl debugging tutorial

=over 4

=item DESCRIPTION

=item use strict

=item Looking at data and -w and v

=item help

=item Stepping through code

=item Placeholder for a, w, t, T

=item REGULAR EXPRESSIONS

=item OUTPUT TIPS

=item CGI

=item GUIs

=item SUMMARY

=item SEE ALSO

=item AUTHOR

=item CONTRIBUTORS

=back

=head2 perlfaq - frequently asked questions about Perl

=over 4

=item DESCRIPTION

=over 4

=item Where to get the perlfaq

=item How to contribute to the perlfaq

=item What will happen if you mail your Perl programming problems to the
authors?

=back

=item CREDITS

=item AUTHOR AND COPYRIGHT

=item Table of Contents

perlfaq  - this document, perlfaq1 - General Questions About Perl, perlfaq2
- Obtaining and Learning about Perl, perlfaq3 - Programming Tools, perlfaq4
- Data Manipulation, perlfaq5 - Files and Formats, perlfaq6 - Regular
Expressions, perlfaq7 - General Perl Language Issues, perlfaq8 - System
Interaction, perlfaq9 - Networking

=item The Questions

=over 4

=item L<perlfaq1>: General Questions About Perl

=item L<perlfaq2>: Obtaining and Learning about Perl

=item L<perlfaq3>: Programming Tools

=item L<perlfaq4>: Data Manipulation

=item L<perlfaq5>: Files and Formats

=item L<perlfaq6>: Regular Expressions

=item L<perlfaq7>: General Perl Language Issues

=item L<perlfaq8>: System Interaction

=item L<perlfaq9>: Networking

=back

=back

=head2 perlfaq1 - General Questions About Perl

=over 4

=item DESCRIPTION

=over 4

=item What is Perl?

=item Who supports Perl?  Who develops it?  Why is it free?

=item Which version of Perl should I use?

=item What are Perl 4, Perl 5, or Perl 6?

=item What was Ponie?

=item What is Perl 6?

=item How stable is Perl?

=item Is Perl difficult to learn?

=item How does Perl compare with other languages like Java, Python, REXX,
Scheme, or Tcl?

=item Can I do [task] in Perl?

=item When shouldn't I program in Perl?

=item What's the difference between "perl" and "Perl"?

=item Is it a Perl program or a Perl script?

=item What is a JAPH?

=item Where can I get a list of Larry Wall witticisms?

=item How can I convince others to use Perl?

http://perltraining.com.au/whyperl.html,
http://www.perl.org/advocacy/whyperl.html

=back

=item REVISION

=item AUTHOR AND COPYRIGHT

=back

=head2 perlfaq2 - Obtaining and Learning about Perl

=over 4

=item DESCRIPTION

=over 4

=item What machines support perl?  Where do I get it?

=item How can I get a binary version of perl?

=item I don't have a C compiler. How can I build my own Perl interpreter?

=item I copied the perl binary from one machine to another, but scripts
don't work.

=item I grabbed the sources and tried to compile but gdbm/dynamic
loading/malloc/linking/... failed.  How do I make it work?

=item What modules and extensions are available for Perl?  What is CPAN? 
What does CPAN/src/... mean?

=item Is there an ISO or ANSI certified version of Perl?

=item Where can I get information on Perl?

=item What are the Perl newsgroups on Usenet?  Where do I post questions?

=item Where should I post source code?

=item Perl Books

References, Tutorials, Task-Oriented, Special Topics

=item Which magazines have Perl content?

=item What mailing lists are there for Perl?

=item Where are the archives for comp.lang.perl.misc?

=item Where can I buy a commercial version of perl?

=item Where do I send bug reports?

=item What is perl.com? Perl Mongers? pm.org? perl.org? cpan.org?

=back

=item REVISION

=item AUTHOR AND COPYRIGHT

=back

=head2 perlfaq3 - Programming Tools

=over 4

=item DESCRIPTION

=over 4

=item How do I do (anything)?

=item How can I use Perl interactively?

=item Is there a Perl shell?

=item How do I find which modules are installed on my system?

=item How do I debug my Perl programs?

=item How do I profile my Perl programs?

=item How do I cross-reference my Perl programs?

=item Is there a pretty-printer (formatter) for Perl?

=item Is there a ctags for Perl?

=item Is there an IDE or Windows Perl Editor?

Eclipse, Enginsite, Komodo, Open Perl IDE, OptiPerl, PerlBuilder,
visiPerl+, Visual Perl, Zeus, GNU Emacs, MicroEMACS, XEmacs, Jed, Elvis,
Vile, Vim, Codewright, MultiEdit, SlickEdit, Bash, Ksh, Tcsh, Zsh, Affrus,
Alpha, BBEdit and BBEdit Lite

=item Where can I get Perl macros for vi?

=item Where can I get perl-mode for emacs?

=item How can I use curses with Perl?

=item How can I write a GUI (X, Tk, Gtk, etc.) in Perl?
X<GUI> X<Tk> X<Wx> X<WxWidgets> X<Gtk> X<Gtk2> X<CamelBones> X<Qt>

Tk, Wx, Gtk and Gtk2, Win32::GUI, CamelBones, Qt, Athena

=item How can I make my Perl program run faster?

=item How can I make my Perl program take less memory?

Don't slurp!, Use map and grep selectively, Avoid unnecessary quotes and
stringification, Pass by reference, Tie large variables to disk

=item Is it safe to return a reference to local or lexical data?

=item How can I free an array or hash so my program shrinks?

=item How can I make my CGI script more efficient?

=item How can I hide the source for my Perl program?

=item How can I compile my Perl program into byte code or C?

=item How can I get C<#!perl> to work on [MS-DOS,NT,...]?

=item Can I write useful Perl programs on the command line?

=item Why don't Perl one-liners work on my DOS/Mac/VMS system?

=item Where can I learn about CGI or Web programming in Perl?

=item Where can I learn about object-oriented Perl programming?

=item Where can I learn about linking C with Perl?

=item I've read perlembed, perlguts, etc., but I can't embed perl in my C
program; what am I doing wrong?

=item When I tried to run my script, I got this message. What does it mean?

=item What's MakeMaker?

=back

=item REVISION

=item AUTHOR AND COPYRIGHT

=back

=head2 perlfaq4 - Data Manipulation

=over 4