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Index: R

access

to password file : Learning Perl, 16.1. Getting Password and Group Information
with seek() : Learning Perl, 17.4. Fixed-Length Random Access Databases

database access/insertion : Advanced Perl Programming, 10.1. Persistence Issues

email signatures : Perl Cookbook, 16.22. Program: sigrand

lines from files : Perl Cookbook, 8.6. Picking a Random Line from a File

numbers

Advanced Perl Programming, 4.4.2.1. Random number generation
Advanced Perl Programming, 4.4.2.1. Random number generation
Perl Cookbook, 2.0. Introduction
Perl Cookbook, 2.7. Generating Random Numbers
Programming Perl, 3.2.115. rand
Programming Perl, 3.2.158. srand
biasing : Perl Cookbook, 2.10. Generating Biased Random Numbers

ordering of lines in files : Perl Cookbook, 8.7. Randomizing All Lines

random-access I/O : Perl Cookbook, 8.12. Using Random-Access I/O

randomizing arrays : Perl Cookbook, 4.17. Randomizing an Array

range (..) operator

Perl Cookbook, 6.8. Extracting a Range of Lines
Perl in a Nutshell, 4.5.11.1. Range operator
Programming Perl, 2.5.15. Range Operator
Programming Perl, 8.2.3. Awk Traps

range (...) operator

Perl Cookbook, 6.8. Extracting a Range of Lines
Perl in a Nutshell, 4.5.11.1. Range operator

ranges of characters : Learning Perl, 7.3.1. Single-Character Patterns

raw_cookie() (CGI.pm) : Perl in a Nutshell, Chapter 10, Reference: raw_cookie

RC_ mnemonics (HTTP::Status) : Perl in a Nutshell, 17.3.4. HTTP::Status

RCPT command (SMTP) : Perl in a Nutshell, 14.1.2. The SMTP Protocol and the SMTP Session

RDBMSs (relational databases)

Advanced Perl Programming, 7.1. OO: An Introduction
Advanced Perl Programming, 10.4. Relational Databases

$rdev file statistic : Programming Perl, 3.2.159. stat

re module : Perl in a Nutshell, 8.124. re

read()

Perl Cookbook, 8.0. Introduction
Perl Cookbook, 8.15. Reading Fixed-Length Records
Learning Perl, 17.4. Fixed-Length Random Access Databases
Perl in a Nutshell, Chapter 5, Reference: read
Programming Perl, 3.2.116. read

Read() (Win32::EventLog) : Perl in a Nutshell, Chapter 19, Reference: Read

read-only variables : Advanced Perl Programming, 3.3.2. Constants

ReadAttr() (Win32::Console) : Perl in a Nutshell, Chapter 19, Reference: ReadAttr

ReadChar() (Win32::Console) : Perl in a Nutshell, Chapter 19, Reference: ReadChar

readdir function

Perl Cookbook, 9.0. Introduction
Perl Cookbook, 9.5. Processing All Files in a Directory
Learning Perl, 12.5. Reading a Directory Handle
Perl in a Nutshell, Chapter 5, Reference: readdir
Programming Perl, 3.2.117. readdir
Programming Perl, 7.2.11. DirHandle - Supply Object Methods for Directory Handles
Programming Perl, 8.3.1. Time Efficiency

ReadEntireFile() (Win32::Internet) : Perl in a Nutshell, Chapter 19, Reference: ReadEntireFile

reader() (Net::NNTP) : Perl in a Nutshell, Chapter 15, Reference: reader

ReadFile() (Win32::Internet) : Perl in a Nutshell, Chapter 19, Reference: ReadFile

reading

data via low-level system call : Programming Perl, 3.2.166. sysread

email : (see email)

files : (see file contents; files)

from commands : Learning Perl, 14.3. Using Processes as Filehandles

from files

Learning Perl, 10.4. Using Filehandles
Learning Perl on Win32 Systems, 10.5. Using Filehandles

input : (see input)

news articles : Perl in a Nutshell, 15.1. The NNTP Protocol

permissions for processes : Programming Perl, 7.2.39. IPC::Open2 - Open a Process for Both Reading and Writing

Registry values : Learning Perl on Win32 Systems, 16.5. Opening and Reading Registry Values

shared memory segment ID : Programming Perl, 3.2.146. shmread

standard input : Learning Perl, 6.1. Input from STDIN

Usenet news : Perl Cookbook, 18.4. Reading and Posting Usenet News Messages

Readline module : Programming Perl, 8.1.4. Readline Support

ReadLine option (PERLDB_OPTS) : Perl in a Nutshell, 6.4. Customizing the Debugger

readline() : Perl in a Nutshell, Chapter 5, Reference: readline

readlink()

Learning Perl, 13.3.2. Creating Hard and Soft Links with Perl
Perl in a Nutshell, Chapter 5, Reference: readlink
Programming Perl, 3.2.118. readlink
example of : Learning Perl, A.12. Chapter 13, File and Directory Manipulation

ReadlKey module : Programming Perl, 8.1.4. Readline Support

readme command (CPAN.pm) : Perl in a Nutshell, Chapter 2, Reference: readme

ReadParse() (CGI.pm) : Perl in a Nutshell, Chapter 10, Reference: ReadParse

readpipe() : Perl in a Nutshell, Chapter 5, Reference: readpipe

ReadRect() (Win32::Console) : Perl in a Nutshell, Chapter 19, Reference: ReadRect

ready file descriptors : Programming Perl, 3.2.135. select (ready file descriptors)

real gid

Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables

$REAL_GROUP_ID ($() variable

Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables

real uid

Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables

$REAL_USER_ID ($<) variable

Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables

real values, testing for : Programming Perl, 3.2.25. defined

Received: header line : Perl Cookbook, 3.11. Program: hopdelta

receiving sockets : Advanced Perl Programming, 12.2.1. Receiver

recipient() (Net::SMTP) : Perl in a Nutshell, Chapter 14, Reference: recipient

recno_demo program (example) : Perl Cookbook, 14.7. Treating a Text File as a Database Array

recompile command (CPAN.pm) : Perl in a Nutshell, Chapter 2, Reference: recompile

record delimiter

(see $ variables, $/ variable)

Perl in a Nutshell, 3.2. Command-Line Options

input delimiter

Learning Perl, 6.1. Input from STDIN
Learning Perl, 14.2. Using Backquotes
Learning Perl on Win32 Systems, 6.1. Input from STDIN
Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 6.1.2. Switches
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables

output delimiter

Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 6.1.2. Switches
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables

record-oriented persistence : Advanced Perl Programming, 10.3. Record-Oriented Approach

records : Perl Cookbook, 11.0. Introduction

binary tree structures : Perl Cookbook, 11.15. Program: Binary Trees

closures as objects : Perl Cookbook, 11.7. Using Closures Instead of Objects

comma-separated : (see CSV)

constructing : Perl Cookbook, 11.9. Constructing Records

counting in files : Perl Cookbook, 8.2. Counting Lines (or Paragraphs or Records) in a File

fixed-length

Perl Cookbook, 8.0. Introduction
Perl Cookbook, 8.15. Reading Fixed-Length Records

functions for : Perl in a Nutshell, 5.1. Perl Functions by Category

lastlog file : Perl Cookbook, 8.20. Program: laston

with pattern separators, reading : Perl Cookbook, 6.7. Reading Records with a Pattern Separator

random-access I/O : Perl Cookbook, 8.12. Using Random-Access I/O

reading/writing to text files : Perl Cookbook, 11.10. Reading and Writing Hash Records to Text Files

variable-length

Perl Cookbook, 8.9. Processing Variable-Length Text Fields
Programming Perl, 2.8. Formats

of various data strutures : Programming Perl, 4.7.5. More Elaborate Records

wtmp file : Perl Cookbook, 8.18. Program: tailwtmp

recursive

open functions : Programming Perl, 3.2.102. open
use of subroutines : Programming Perl, 2.7. Subroutines
processing files in directories : Perl Cookbook, 9.7. Processing All Files in a Directory Recursively

recv()

Perl in a Nutshell, Chapter 5, Reference: recv
Programming Perl, 3.2.119. recv
Socket module : Perl in a Nutshell, 13.1. Built-in Socket Functions

redirect()

Perl Cookbook, 19.8. Redirecting to a Different Location
Perl in a Nutshell, Chapter 10, Reference: redirect

Redirect() (Response object, PerlScript) : Perl in a Nutshell, 20.2.2.3. Response methods

redirecting : Advanced Perl Programming, 3.4.1. I/O Redirection

CGI error messages : Perl Cookbook, 19.2. Redirecting Error Messages
CGI requests : Perl Cookbook, 19.8. Redirecting to a Different Location

redo operator

Learning Perl, 9.3. The redo Statement
Perl in a Nutshell, Chapter 5, Reference: redo
Perl in a Nutshell, 4.3.1.5. Loop control
Programming Perl, 2.6.4.4. Loop control
Programming Perl, 3.2.120. redo

ref()

Advanced Perl Programming, 1.4. Querying a Reference
Advanced Perl Programming, 7.2.4. The Need for Polymorphism
Perl Cookbook, 11.0. Introduction
Perl Cookbook, 13.0. Introduction
Perl in a Nutshell, Chapter 5, Reference: ref
Perl in a Nutshell, 4.8.2. Dereferencing
Programming Perl, 3.2.121. ref
Programming Perl, 4.3.5. Other Tricks You Can Do with Hard References

references

(see also scalars)

Advanced Perl Programming, 1. Data References and Anonymous Storage

Advanced Perl Programming, 1.1.1. A Reference Is Just Another Scalar

Advanced Perl Programming, 1.2. Using References

Advanced Perl Programming, 20.3.1. Scalar Values

Perl Cookbook, 11.0. Introduction

Perl in a Nutshell, 4.8. References and Complex Data Structures

Perl in a Nutshell, 4.8.1. Creating References

Programming Perl, 4.1. What Is a Reference?

to anonymous arrays/hashes : Advanced Perl Programming, 1.2.3. References to Anonymous Storage

to arrays : Perl Cookbook, 11.1. Taking References to Arrays

arrays of scalar references : Perl Cookbook, 11.6. Creating Arrays of Scalar References

as hash keys : Perl Cookbook, 13.15. Creating Magic Variables with tie

autovivification : Perl Cookbook, 11.0. Introduction

blessed, IVs and : Advanced Perl Programming, 20.3.1.3. SVs and object pointers

C pointers : Advanced Perl Programming, 1. Data References and Anonymous Storage

in CGI programs : Learning Perl, 19.7.1. References

checking for : Programming Perl, 3.2.121. ref

circular

Advanced Perl Programming, 1.6.1. Reference Counts
Programming Perl, 5.3.9. A Note on Garbage Collection

closures as objects : Perl Cookbook, 11.7. Using Closures Instead of Objects

to constants : Advanced Perl Programming, 3.3.2. Constants

dereferencing : Advanced Perl Programming, 1.1.2. Dereferencing

to filehandles : Programming Perl, 4.2.6. Filehandle Referencers

to functions : Perl Cookbook, 11.4. Taking References to Functions

as hash values : Perl Cookbook, 5.12. Hashing References

to hashes : Perl Cookbook, 11.3. Taking References to Hashes

hashes of arrays : Perl Cookbook, 11.2. Making Hashes of Arrays

iterating over arrays by : Perl Cookbook, 4.5. Iterating Over an Array by Reference

to methods : Perl Cookbook, 11.8. Creating References to Methods

multidimensional arrays and : Programming Perl, 4.6. A Brief Tutorial: Manipulating Lists of Lists

multiple levels of : Advanced Perl Programming, 1.2.4. Dereferencing Multiple Levels of Indirection

nested data structures : Advanced Perl Programming, 1.3. Nested Data Structures

object references

Advanced Perl Programming, 7.2.2. Unique Identity
Programming Perl, 4.3.4. Using Object Methods

objects as : Programming Perl, 5.3.3. An Object Is Simply a Referenced Thingy

in other languages : Advanced Perl Programming, 1.7.1. Tcl

to packages, indirect : Perl Cookbook, 12.13. Referring to Packages Indirectly

passing

Perl in a Nutshell, 4.7.3. Passing References
Programming Perl, 2.7.2. Passing References

passing by : Perl Cookbook, 10.5. Passing Arrays and Hashes by Reference

performance and : Advanced Perl Programming, 1.2.2. Performance Efficiency

precedence and : Advanced Perl Programming, 1.1.6. Confusion About Precedence

querying : Advanced Perl Programming, 1.4. Querying a Reference

reference count

Advanced Perl Programming, 1.6.1. Reference Counts
Perl Cookbook, 11.0. Introduction

returning by : Perl Cookbook, 10.9. Returning More Than One Array or Hash

to scalars : Perl Cookbook, 11.5. Taking References to Scalars

selective aliases : Advanced Perl Programming, 3.3.1. Selective Aliasing

self-referential structures : Perl Cookbook, 13.13. Coping with Circular Data Structures

static allocation : Advanced Perl Programming, 1.1. Referring to Existing Variables

to subroutines

(see also closures)
Advanced Perl Programming, 4.1. Subroutine References
Advanced Perl Programming, 4.3. Closures

SWIG and : Advanced Perl Programming, 18.3. SWIG Features

symbolic

Advanced Perl Programming, B.6. Dynamic Behavior
Advanced Perl Programming, 1.5. Symbolic References
Advanced Perl Programming, 4.1.4. Symbolic References
Advanced Perl Programming, 6.1.2. Symbolic References
Perl Cookbook, 1.8. Expanding Variables in User Input
Perl Cookbook, 12.13. Referring to Packages Indirectly

syntax for : Advanced Perl Programming, B.1. References

typeglobs and

Advanced Perl Programming, 3.2.2.1. Efficient parameter passing
Advanced Perl Programming, 3.3.4. References to Typeglobs

use strict 'refs' : Programming Perl, 7.2.59. strict - Restrict Unsafe Constructs

referents : Perl Cookbook, 11.0. Introduction

referer() (CGI.pm) : Perl in a Nutshell, Chapter 10, Reference: referer

"referrer" vs. "referer" : Perl Cookbook, 20.1. Fetching a URL from a Perl Script

refile() (Mail::Folder) : Perl in a Nutshell, Chapter 14, Reference: refile

reflection

Advanced Perl Programming, 6.8. Accessing the Symbol Table
Advanced Perl Programming, 6.9. Language Comparisons

regedit.exe, regedt32.exe utilities : Learning Perl on Win32 Systems, 16.4. The Registry

-regex option (perlcc) : Perl in a Nutshell, 3.4. The Perl Compiler

regexes : (see regular expressions)

RegExp tool : Advanced Perl Programming, 20.1. Reading the Source

regexps : (see regular expressions)

Registry access and management

Learning Perl on Win32 Systems, 16.4. The Registry
Perl in a Nutshell, 19.13. Win32::Registry

Registry module

Learning Perl on Win32 Systems, A.15. Chapter 16, System Information
Learning Perl on Win32 Systems, B.4. Win32 Extensions
Learning Perl on Win32 Systems, 16.4. The Registry
Learning Perl on Win32 Systems, 16.4.1. The Registry Structure

regular expressions

(see also pattern matching)

(see also patterns)

Perl Cookbook, 1.16. Soundex Matching

Learning Perl, 1.5.7. Handling Varying Input Formats

Learning Perl on Win32 Systems, 1.6.7. Handling Varying Input Formats

Learning Perl on Win32 Systems, 7.1. Concepts About Regular Expressions

Perl in a Nutshell, 4.6. Regular Expressions

Programming Perl, 1.7. Regular Expressions

Programming Perl, 2.4.1. Regular Expressions

alternation in : Learning Perl, 7.3.2.4. Alternation

anchoring in

Learning Perl, 7.3.3. Anchoring Patterns
Learning Perl on Win32 Systems, 7.3.3. Anchoring Patterns

anchors : Perl in a Nutshell, 4.6.5. Anchors

backreferences : Programming Perl, 1.7.4. Backreferences

backtracking in : Learning Perl, 7.3.2.2. Multipliers

character classes

Learning Perl, 7.3.1. Single-Character Patterns
Perl in a Nutshell, 4.6.4. Character Classes
Programming Perl, 1.7. Regular Expressions

checking if strings are valid numbers : Perl Cookbook, 2.1. Checking Whether a String Is a Valid Number

commenting : Perl Cookbook, 6.4. Commenting Regular Expressions

compared with globbing : Learning Perl, 12.2. Globbing

definition of : Learning Perl, 7.1. Concepts About Regular Expressions

escaped sequences : Perl in a Nutshell, 4.6.3. Escaped Sequences

examples of

Learning Perl, 1.5.8. Making It Fair for the Rest
Learning Perl, 1.5.9. Making It a Bit More Modular
Learning Perl, 9.1. The last Statement
Learning Perl on Win32 Systems, 1.6.8. Making It Fair for the Rest
Learning Perl on Win32 Systems, 1.6.9. Making It a Bit More Modular
Learning Perl on Win32 Systems, 9.1. The last Statement

extended syntax

Learning Perl on Win32 Systems, D.8. Additional Regular Expression Features
Perl in a Nutshell, 4.6.8. Extended Regular Expressions
Programming Perl, 2.4.1.4. Regular expression extensions

functions for : Perl in a Nutshell, 5.1. Perl Functions by Category

fuzzy matching : Perl Cookbook, 6.13. Approximate Matching

grouping patterns of : Learning Perl, 7.3.2. Grouping Patterns

honoring locale settings : Perl Cookbook, 6.12. Honoring Locale Settings in Regular Expressions

matching precedence : Programming Perl, 2.4.1.2. The rules of regular expression matching

metacharacters : (see metacharacters)

multiple-byte matching : Perl Cookbook, 6.18. Matching Multiple-Byte Characters

non-special characters of : Learning Perl, 7.3.1. Single-Character Patterns

pattern match variables : Perl in a Nutshell, 4.6.7. Pattern Match Variables

pattern matching operators

Perl in a Nutshell, 4.5.7. Pattern Match Operators
Perl in a Nutshell, 4.6.1. Pattern-Matching Operators

precedence in

Learning Perl, 7.3.4. Precedence
Learning Perl on Win32 Systems, 7.3.4. Precedence

quantifiers : Perl in a Nutshell, 4.6.6. Quantifiers

special (predefined) variables

Perl in a Nutshell, 4.4.5. Regular Expression Special Variables
Programming Perl, 2.9.1. Regular Expression Special Variables

split() and : Learning Perl, 7.6.1. The split Function

tcgrep program : Perl Cookbook, 6.22. Program: tcgrep

testing for invalid patterns : Perl Cookbook, 6.11. Testing for a Valid Pattern

urlify program : Perl Cookbook, 6.21. Program: urlify

useful and interesting (list) : Perl Cookbook, 6.23. Regular Expression Grabbag

variable interpolation : Learning Perl, 7.4.4. Using Variable Interpolation

rel() (URI::URL) : Perl in a Nutshell, Chapter 17, Reference: rel

relational databases (RDBMSs)

Advanced Perl Programming, 7.1. OO: An Introduction
Advanced Perl Programming, 10.4. Relational Databases

relational operators

(see comparison operators)
Perl in a Nutshell, 4.5.4.1. Relational operators
Programming Perl, 2.5.11. Relational Operators

relative indexing : Advanced Perl Programming, 14.3.5.3. Insertion with relative indexing

release()

Win32::Mutex module : Perl in a Nutshell, Chapter 19, Reference: release
Win32::Semaphore module : Perl in a Nutshell, Chapter 19, Reference: release

-relheight, -relwidth options (place geometry manager) : Perl in a Nutshell, 18.2.3. The Place Geometry Manager

-relief option (widgets) : Perl in a Nutshell, 18.3. Common Widget Configuration Options

reload command (CPAN.pm) : Perl in a Nutshell, Chapter 2, Reference: reload

-relx, -rely options (place geometry manager) : Perl in a Nutshell, 18.2.3. The Place Geometry Manager

remote procedure calls (RPC)

Advanced Perl Programming, 13.2. Remote Procedure Calls (RPC)
Advanced Perl Programming, 17.1. On Code Generation

REMOTE_ADDR variable : Perl in a Nutshell, 9.4. CGI Environment Variables

remote_host() (CGI.pm) : Perl in a Nutshell, Chapter 10, Reference: remote_host

REMOTE_HOST variable : Perl in a Nutshell, 9.4. CGI Environment Variables

REMOTE_IDENT variable : Perl in a Nutshell, 9.4. CGI Environment Variables

remote_user() (CGI.pm) : Perl in a Nutshell, Chapter 10, Reference: remote_user

REMOTE_USER variable : Perl in a Nutshell, 9.4. CGI Environment Variables

remove_header() (HTTP::Headers) : Perl in a Nutshell, Chapter 17, Reference: remove_header

remove_sig() (Mail::Internet) : Perl in a Nutshell, Chapter 14, Reference: remove_sig

removing : (see deleting)

characters : Learning Perl, 15.5. Transliteration

files : Learning Perl, 13.1. Removing a File

HTML tags : Perl Cookbook, 20.6. Extracting or Removing HTML Tags

last character

Learning Perl, 2.6.3. The chop and chomp Functions
Learning Perl on Win32 Systems, 15.5. Transliteration

rename command (Windows NT) : Learning Perl on Win32 Systems, 13.2. Renaming a File

rename script (example) : Perl Cookbook, 9.9. Renaming Files

rename()

Learning Perl, 1.5.15. Making Those Old Word Lists More Noticeable

Learning Perl, 13.2. Renaming a File

Learning Perl on Win32 Systems, 1.6.15. Making Those Old Word Lists More Noticeable

Learning Perl on Win32 Systems, 13.2. Renaming a File

Perl in a Nutshell, Chapter 5, Reference: rename

Programming Perl, 3.2.122. rename

examples of

Learning Perl, A.12. Chapter 13, File and Directory Manipulation
Learning Perl, 1.5.17. The Final Programs

Net::FTP module : Perl in a Nutshell, Chapter 16, Reference: rename

Rename() (Win32::Internet) : Perl in a Nutshell, Chapter 19, Reference: Rename

renaming files

Perl Cookbook, 9.9. Renaming Files

Learning Perl, 13.2. Renaming a File

examples of

Learning Perl, 1.5.15. Making Those Old Word Lists More Noticeable
Learning Perl on Win32 Systems, 1.6.15. Making Those Old Word Lists More Noticeable

rep program (example) : Perl Cookbook, 15.12. Managing the Screen

repeat function : Advanced Perl Programming, 14.5. Timers

-repeatdelay option

Scale widget : Perl in a Nutshell, 18.13. The Scale Widget
Scrollbar widget : Perl in a Nutshell, 18.9. The Scrollbar Widget

-repeatinterval option

Scale widget : Perl in a Nutshell, 18.13. The Scale Widget
Scrollbar widget : Perl in a Nutshell, 18.9. The Scrollbar Widget

repetition (x) operator

Programming Perl, 1.5.2. String Operators
Programming Perl, 2.5.7. Multiplicative Operators

replacing array elements : Programming Perl, 3.2.154. splice

reply() (Mail::Internet) : Perl in a Nutshell, Chapter 14, Reference: reply

report generating, example of : Learning Perl on Win32 Systems, 1.6.14. Listing the Secret Words

Report() (Win32::EventLog) : Perl in a Nutshell, Chapter 19, Reference: Report

reporting bugs in Perl : Perl in a Nutshell, 6.6. The perlbug Program

reporting errors : (see errors; warning messages)

reports, generating

Learning Perl, 1.5.14. Listing the Secret Words
Learning Perl, 11.1. What Is a Format?

request() (LWP::UserAgent) : Perl in a Nutshell, 17.2.3. LWP::UserAgent

Request() (Win32::Internet) : Perl in a Nutshell, Chapter 19, Reference: Request

Request object (PerlScript) : Perl in a Nutshell, 20.2. Server-Side PerlScript

request_method() (CGI.pm) : Perl in a Nutshell, Chapter 10, Reference: request_method

REQUEST_METHOD environment variable : Perl in a Nutshell, 9.4. CGI Environment Variables

requests, HTTP

HTTP::Request module

Perl in a Nutshell, 17.1. LWP Overview
Perl in a Nutshell, 17.3.1. HTTP::Request

UserAgent object for

Perl in a Nutshell, 17.1. LWP Overview
Perl in a Nutshell, 17.2. The LWP Modules
Perl in a Nutshell, 17.2.3. LWP::UserAgent

require()

Perl in a Nutshell, Chapter 5, Reference: require
Programming Perl, 2.6.7. Global Declarations
Programming Perl, 2.9.4. Global Special Arrays
Programming Perl, 3.2.123. require
Programming Perl, 5.2. Modules

require statement

Advanced Perl Programming, 6.2. Packages and Files
Perl Cookbook, 12.0. Introduction
Perl in a Nutshell, 7.2. Modules
trapping errors in : Perl Cookbook, 12.2. Trapping Errors in require or use

REs : (see regular expressions)

reserved words : Programming Perl, 2.3.1. Variables

reset()

Perl in a Nutshell, Chapter 5, Reference: reset
Programming Perl, 3.2.124. reset
CGI.pm module : Perl in a Nutshell, Chapter 10, Reference: reset
Net::POP3 module : Perl in a Nutshell, Chapter 14, Reference: reset
Net::SMTP module : Perl in a Nutshell, Chapter 14, Reference: reset
Win32::ChangeNotification module : Perl in a Nutshell, Chapter 19, Reference: reset

Reset()

Mail::POP3Client module

Perl in a Nutshell, Chapter 14, Reference: Reset
Perl in a Nutshell, 14.2.8.4. Deleting and undeleting messages

Win32::OLE::Enum module : Perl in a Nutshell, Chapter 19, Reference: Reset

resizable() (Frame widget) : Perl in a Nutshell, 18.18.1. Toplevel Methods

resizing : (see size)

-resolution option (Scale) : Perl in a Nutshell, 18.13. The Scale Widget

Resolve() (Win32::Shortcut) : Perl in a Nutshell, Chapter 19, Reference: Resolve

resources for further reading

Advanced Perl Programming, Resources
Perl in a Nutshell, 1.4. Perl Resources
perldsc document : Advanced Perl Programming, 2. Implementing Complex Data Structures
perltoot document : Advanced Perl Programming, 4.4.3. Closures Versus Objects

resources, managing shared : Perl in a Nutshell, 19.11. Win32::NetResource

Response object (PerlScript)

Perl in a Nutshell, 20.2. Server-Side PerlScript
Perl in a Nutshell, 20.2.2. The Response Object

responses, HTTP : Perl in a Nutshell, 17.3.2. HTTP::Response

restarting servers on demand : Perl Cookbook, 17.16. Restarting a Server on Demand

restoring filehandles : Programming Perl, 7.2.54. SelectSaver - Save and Restore Selected Filehandle

result : Learning Perl, 2.4. Scalar Operators

Resume() (Win32::Process) : Perl in a Nutshell, Chapter 19, Reference: Resume

ResumeService() (Win32::Service) : Perl in a Nutshell, Chapter 19, Reference: ResumeService

retr() (Net::FTP) : Perl in a Nutshell, Chapter 16, Reference: retr

Retrieve() (Mail::POP3Client)

Perl in a Nutshell, Chapter 14, Reference: Retrieve
Perl in a Nutshell, 14.2.8.3. Retrieving the message body

retrieve() (Storable module) : Perl Cookbook, 11.13. Storing Data Structures to Disk

retrieve_where function : Advanced Perl Programming, 11.1. Adaptor: An Introduction

Adaptor::DBI module : Advanced Perl Programming, 11.3.2.2. Queries
Adaptor::File module : Advanced Perl Programming, 11.3.1.3. Query processing

retrieving email messages : Perl in a Nutshell, 14.1.3. Retrieving Email with Net::POP3

retrieving URLs : Perl Cookbook, 20.1. Fetching a URL from a Perl Script

return statement

Perl Cookbook, 10.10. Returning Failure
Perl in a Nutshell, Chapter 5, Reference: return
Perl in a Nutshell, 4.7.2. Passing Arguments
Programming Perl, 3.2.125. return

return context, subroutines : Perl Cookbook, 10.6. Detecting Return Context

return stack (retstack) : Advanced Perl Programming, 20.4.3. Inside Other Stacks

return status, backwards for system() : Learning Perl, 14.1. Using system and exec

return values

Perl Cookbook, 10.8. Skipping Selected Return Values

Perl Cookbook, 10.9. Returning More Than One Array or Hash

Perl Cookbook, 10.10. Returning Failure

Learning Perl, 1.5.9. Making It a Bit More Modular

Programming Perl, 2.7. Subroutines

from fork : Learning Perl, 14.4. Using fork

print() and : Learning Perl, 6.3.1. Using print for Normal Output

read() : Learning Perl, 17.4. Fixed-Length Random Access Databases

select() : Learning Perl, 11.6.1. Using select() to Change the Filehandle

subroutine, example of

Learning Perl, 1.5.17. The Final Programs
Learning Perl, 8.3. Return Values
Learning Perl on Win32 Systems, 1.6.17. The Final Programs
Learning Perl on Win32 Systems, 1.6.9. Making It a Bit More Modular
Learning Perl on Win32 Systems, 8.3. Return Values

tr operator : Learning Perl, 15.5. Transliteration

Reuse option (IO::Socket::INET) : Perl in a Nutshell, 13.2.4. IO::Socket::INET Reference

reusing code

Programming Perl, 5.5.8. Thinking of Code Reuse
Programming Perl, 8.4. Programming with Style

reverse()

Perl Cookbook, 1.6. Reversing a String by Word or Character

Perl Cookbook, 4.10. Reversing an Array

Learning Perl, 3.4.5. The reverse Function

Perl in a Nutshell, Chapter 5, Reference: reverse

Programming Perl, 3.2.126. reverse

example of

Learning Perl, A.2. Chapter 3, Arrays and List Data
Learning Perl, A.5. Chapter 6, Basic I/O
Learning Perl on Win32 Systems, A.2. Chapter 3, Arrays and List Data
Learning Perl on Win32 Systems, A.5. Chapter 6, Basic I/O

inverting hashes : Perl Cookbook, 5.8. Inverting a Hash

reversing

array elements : Perl Cookbook, 4.10. Reversing an Array
words/characters in strings : Perl Cookbook, 1.6. Reversing a String by Word or Character

revert() (HTTP::Cookies) : Perl in a Nutshell, Chapter 17, Reference: revert

revhash_demo program (example) : Perl Cookbook, 13.15. Creating Magic Variables with tie

rewinddir()

Perl Cookbook, 9.5. Processing All Files in a Directory
Perl in a Nutshell, Chapter 5, Reference: rewinddir
Programming Perl, 3.2.127. rewinddir
Programming Perl, 7.2.11. DirHandle - Supply Object Methods for Directory Handles

right angle bracket : (see <> (angle brackets))

right associativity : Learning Perl, 2.4.3. Operator Precedence and Associativity

right justification : Programming Perl, 2.8.1. Format Variables

right-shift (>>) operator : Programming Perl, 2.5.9. Shift Operators

rindex()

Learning Perl, A.14. Chapter 15, Other Data Transformation
Learning Perl, 15.1. Finding a Substring
Learning Perl on Win32 Systems, 15.1. Finding a Substring
Perl in a Nutshell, Chapter 5, Reference: rindex
Programming Perl, 3.2.128. rindex

RLENGTH variable (awk) : Programming Perl, 6.4.2.2. a2p

rm command, unlink() and : Learning Perl, 13.1. Removing a File

rmdir function

Perl Cookbook, 9.8. Removing a Directory and Its Contents
Learning Perl, 13.4. Making and Removing Directories
Learning Perl on Win32 Systems, 13.3. Making and Removing Directories
Perl in a Nutshell, Chapter 5, Reference: rmdir
Programming Perl, 3.2.129. rmdir
Net::FTP module : Perl in a Nutshell, Chapter 16, Reference: rmdir

Rmdir() (Win32::Internet) : Perl in a Nutshell, Chapter 19, Reference: Rmdir

rmtree() : Programming Perl, 7.2.31. File::Path - Create or Remove a Series of Directories

rmtree program (example) : Perl Cookbook, 9.8. Removing a Directory and Its Contents

Robot User Agent : Perl in a Nutshell, 17.2.1. LWP::RobotUA sections

robots for web traversal : Perl Cookbook, 20.11. Creating a Robot

rollback() (DBI) : Perl in a Nutshell, Chapter 12, Reference: rollback

roman() (Roman module) : Perl Cookbook, 2.6. Working with Roman Numerals

Roman module : Perl Cookbook, 2.6. Working with Roman Numerals

roman numerals : Perl Cookbook, 2.6. Working with Roman Numerals

root directory (/)

Perl Cookbook, 9.0. Introduction
Programming Perl, 3.2.17. chroot

rounding floating-point numbers : Perl Cookbook, 2.3. Rounding Floating-Point Numbers

routines : (see subroutines)

row : (see records)

-row option (grid manager) : Perl in a Nutshell, 18.2.2. The grid Geometry Manager

rows() (DBI) : Perl in a Nutshell, Chapter 12, Reference: rows

-rowspan option (grid manager) : Perl in a Nutshell, 18.2.2. The grid Geometry Manager

RPC (Remote Procedure Call)

Advanced Perl Programming, 13.2. Remote Procedure Calls (RPC)
Advanced Perl Programming, 17.1. On Code Generation

$RS

Learning Perl, 6.1. Input from STDIN
Learning Perl, 14.2. Using Backquotes
Learning Perl on Win32 Systems, 6.1. Input from STDIN
Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 6.1.2. Switches
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables

RSTART variable (awk) : Programming Perl, 6.4.2.2. a2p

RTTI (Run Time Type Identification) : Advanced Perl Programming, 6.9.3. C/C++

rules() (LWP::RobotUA) : Perl in a Nutshell, Chapter 17, Reference: rules

-run option (perlcc) : Perl in a Nutshell, 3.4. The Perl Compiler

run time, loading modules at : Perl Cookbook, 12.3. Delaying use Until Run Time

run-time binding : Advanced Perl Programming, 7.2.4. The Need for Polymorphism

run-time errors

(see errors)
(see exceptions)

run-time evaluation

(see also eval function)
Advanced Perl Programming, B.6. Dynamic Behavior
Advanced Perl Programming, 5. Eval
Advanced Perl Programming, Language Syntax
Programming Perl, 7.2.48.8. Run-time overloading
in other languages : Advanced Perl Programming, 5.7. Eval in Other Languages

run-time scoping : Perl Cookbook, 10.13. Saving Global Values

RUNAT attribute (<SCRIPT>) : Perl in a Nutshell, 20.2. Server-Side PerlScript

running : (see executing)

runtests() : Programming Perl, 7.2.66. Test::Harness - Run Perl Standard Test Scripts with Statistics

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