Index: P

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## Index: P

-p command-line option
  modifying files with: 7.16.2. Solution
  writing filters: 7.14.3.2. Command-line options
pack( ): 1.4.3. Discussion
  8.13.2. Solution
  with Tk resize events: 15.16.2. Solution
package statement: 12.. Introduction
__PACKAGE__ symbol: 10.4.3. Discussion
  12.6.3. Discussion
packages: 12.. Introduction
  determining current calling: 12.6.1. Problem
  overriding built-in functions: 12.12.1. Problem
  private variables: 12.4.1. Problem
  referring to indirectly: 12.16.1. Problem
paragraphs
  counting in files: 8.2.1. Problem
  in pod documentation: 12.20.3. Discussion
  reading files backwards by: 8.4.1. Problem
  reformatting: 1.17.1. Problem
param( ): 19.1.3. Discussion
parent classes
  accessing overridden methods: 13.11.1. Problem
  cloning objects: 13.6.1. Problem
parentheses ( ): 1.. Introduction
  autouse pragma: 12.3.3. Discussion
  prototyping functions: 10.11.3.1. Omitting parentheses
  substitution: 6.1.3. Discussion
parse( ), HTML tables, extracting data: 20.19.3. Discussion
parse_csv subroutines: 1.20.3. Discussion
ParseDate( ): 3.7.2. Solution
  3.11. Program: hopdelta
parsing
  comma-separated data: 1.20.1. Problem
  command-line arguments: 15.1.1. Problem
  commas into numbers: 2.16.1. Problem
  date and time from strings: 3.7.1. Problem
  filenames: 9.10.1. Problem
  HTML: 20.18.1. Problem
  HTML tags: 20.6.1. Problem
  web server log file: 20.12.1. Problem
  XML
    into data structures: 22.1.1. Problem
    into DOM tree: 22.2.1. Problem
    into SAX events: 22.3.1. Problem
passing
  arrays and hashes by reference: 10.5.1. Problem
  by named parameter: 10.7.1. Problem
passwords
  randomly generating: 2.6.3. Discussion
  reading without echo: 15.10.1. Problem
    15.10.1. Problem
paths, XML: 22.. Paths
pattern matching (see regular expressions)
pattern separators, reading data with: 6.7.1. Problem
PDL (Perl Data Language): 2.13.2. Solution
  modules, matrix multiplication: 2.13.2. Solution
percent sign (%)
  hashes: 5.. Introduction
  %SIG hash: 16.15.2. Solution
performance
  backreferences and: 1.11.3. Discussion
  database access, speeding with mod_perl: 21.8.1. Problem
  event-based XML parsing: 22.3.1. Problem
  presizing hashes: 5.14.3. Discussion
  web server, improving: 21.12.1. Problem
Perl Data Language (see PDL)
PERL5LIB environment variable: 12.8.3. Discussion
perlmenu module: 15.12.3. Description
PERL_UNICODE environment variable: 8.21.3. Discussion
permissions
  CGI scripts: 19.3.3.2. Make sure the script has permissions to do what it's trying to do
  libraries: 19.3.3.3. Is the script valid Perl?
  symbolic file, instead of octal values: 9.11.1. Problem
  testing files for trustworthiness: 8.17.1. Problem
permutations, generating all possible: 4.20. Program: permute
permute program: 4.20. Program: permute
persistent
  data structures: 11.14.1. Problem
  database data: 14.7.1. Problem
  private subroutine variables: 10.3.1. Problem
personal identification number (PIN): 6.19.3. Discussion
PF_ constants: 17.. Introduction
.ph filename extension: 12.17.3. Discussion
PHP, communicating with mod_perl: 21.11.1. Problem
PIN (personal identification number): 6.19.3. Discussion
pinging machines: 18.7.1. Problem
pipe( ): 16.. Process Creation
  16.10.2. Solution
places( ): 13.14.5. Example: Overloaded FixNum Class
pluralizing words: 2.17.1. Problem
plus sign (+), file-access modes: 7.1.3. Discussion
.pm filename extension: 12.. Modules
pnotes
  Apache requests, sharing information between handlers: 21.13.2. Solution
  URLs, storing information in: 21.10.2. Solution
pod
  converting into other languages: 12.20.3. Discussion
  documentation: 12.20.1. Problem
    sorting =head1 sections: 15.22. Program: tkshufflepod
pod2html: 12.20.3. Discussion
pod2man: 12.20.3. Discussion
pod2text tools: 12.20.3. Discussion
POE framework, writing multitasking server with: 17.15.1. Problem
POE::Component::Server::TCP module: 17.15.2. Solution
pop( ), circular lists: 4.17.2. Solution
POP (Post Office Protocol): 18.5.3. Discussion
  servers
    (see also POP3 servers)
    fetching and summarizing messages: 18.15. Program: rfrm
    logging in: 18.5.3. Discussion
POP3 servers: 18.5.1. Problem
port connection attempts, logging: 17.20. Program: backsniff
portability
  closing filehandles: 7.. I/O Operations
  encodings in XML: 22.. XML Declaration
Portable Operating System Interface (see POSIX)
pos( ): 6.14.3. Discussion
POSIX module
  blocking signals: 16.20.2. Solution
  today's date: 3.1.3. Discussion
  trigonometric functions: 2.11.2. Solution
POSIX (Portable Operating System Interface): 0.3. Platform Notes
  termios interface: 15.8.1. Problem
  time( ): 3.. Introduction
POSIX::close( ): 7.9.2. Solution
  7.9.3. Discussion
POSIX::setsid( ): 17.17.3. Discussion
POSIX::strtod( ): 2.1.3. Discussion
POSIX::uname( ): 17.8.2. Solution
POST method: 19.. Behind the Scenes
  19.1.3. Discussion
  20.2.2. Solution
Post Office Protocol (see POP)
posting Usenet messages: 18.4.1. Problem
pound sign (#), with printf( ): 2.15.3. Discussion
pragmas: 12.. Modules
preallocating memory for hashes: 5.14.1. Problem
prime numbers, calculating: 2.18. Program: Calculating Prime Factors
print( )
  email attachments: 18.9.3. Discussion
  filehandles
    outputting to multiple: 7.8.3. Discussion
    storing in variables: 7.5.3. Discussion
printf( ): 1.4.3. Discussion
  floating-point numbers, rounding: 2.2.2. Solution
  storing filehandles in variables: 7.5.3. Discussion
printing
  ; printf( ))
    (see also print( ))
  data structures: 11.11.1. Problem
  date and time information: 3.8.1. Problem
  hashes: 5.6.1. Problem
  lists with commas: 4.2.1. Problem
  to multiple filehandles simultaneously: 7.8.1. Problem
private
  function to variable: 12.5.1. Problem
  methods: 13.. Methods
  module variables: 12.4.1. Problem
  subroutine variables: 10.2.1. Problem
processes: 16.. Introduction
  catching Ctrl-C: 16.18.1. Problem
  communicating between: 16.10.1. Problem
  controlling input/output: 16.8.1. Problem
  creating: 16.. Process Creation
  filtering output: 16.5.1. Problem
  gathering output: 16.1.1. Problem
  groups: 7.25. Program: lockarea
    16.14.3. Discussion
  imitating files with named pipes: 16.11.1. Problem
  large XML files, processing: 22.8.1. Problem
  multitasking servers, writing: 17.14.1. Problem
    with POE: 17.15.1. Problem
  preprocessing input: 16.6.1. Problem
  programs
    reading from and writing to: 16.4.1. Problem
    reading STDERR from: 16.7.1. Problem
    replacing: 16.3.1. Problem
    running multiple: 16.2.1. Problem
  recursively processing files in directories: 9.7.1. Problem
  sharing variables among: 16.12.1. Problem
  signal handlers: 16.15.1. Problem
    overriding: 16.16.1. Problem
    writing: 16.17.1. Problem
  signals: 16.. Signals
    blocking: 16.20.1. Problem
    listing available: 16.13.1. Problem
    sending: 16.14.1. Problem
    turning into errors: 16.22.1. Problem
  timing out operations: 16.21.1. Problem
  XML processing instructions: 22.. Processing Instructions
  XSLT, processing: 22.7.1. Problem
  zombies: 16.. Process Creation
    avoiding: 16.19.1. Problem
programs
  CGI (see CGI programming)
  command-line arguments, parsing: 15.1.1. Problem
  controlling input/output of: 16.8.1. Problem
  controlling with Expect: 15.13.1. Problem
  filtering output: 16.5.1. Problem
  gathering output from: 16.1.1. Problem
  preprocessing input: 16.6.1. Problem
  reading from and writing to: 16.4.1. Problem
  reading STDERR from: 16.7.1. Problem
  replacing: 16.3.1. Problem
  running multiple: 16.2.1. Problem
  simulating telnet from: 18.6.1. Problem
  testing if running interactively: 15.2.1. Problem
progressive matching: 6.5.3. Discussion
protocols
  Internet: 18.. Introduction
  socket: 17.. Introduction
prototypes: 10.11.1. Problem
  13.. Methods
proxy, submitting forms through: 20.2.3. Discussion
psgrep program: 1.24. Program: psgrep
public methods: 13.. Methods
push( ): 4.10.2. Solution
  11.2.2. Solution
  circular lists: 4.17.2. Solution
  Tie::IxHash module and: 5.7.3. Discussion

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