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Index: R

• command (CPAN.pm) : Perl tutorial, Chapter 2, Reference: r
• command (debugger)
• • Perl tutorial, Chapter 6, Reference: R
  • Perl Developing, 8.1.1. Debugger Commands
• command (Perl debugger) : Perl tutorial, Chapter 6, Reference: r
• -r file test operator
• • Learning Perl, 10.5. The -x File Tests
  • Learning Perl on Win32 Systems, 10.6. The -x File Tests
  • Perl tutorial, 4.5.8. File Test Operators
  • Perl Developing, 2.5.10. Named Unary and File Test Operators
• -R file test operator
• • Learning Perl, 10.5. The -x File Tests
  • Perl tutorial, 4.5.8. File Test Operators
  • Perl Developing, 2.5.10. Named Unary and File Test Operators
• -r option (dprofpp) : Perl tutorial, 6.5. The Perl Profiler
• -r option (perlbug) : Perl tutorial, 6.6. The perlbug Program
• sequence (carriage return) : Perl tutorial, 4.6.3. Escaped Sequences
• race conditions : Perl tutorial, 19.4. Writing a Safe CGI Program
• rad2deg() (example) : Perl tutorial, 2.11. Doing Trigonometry in Degrees, not Radians
• radians vs. degrees : Perl tutorial, 2.11. Doing Trigonometry in Degrees, not Radians
• radio_group() (CGI.pm) : Perl tutorial, Chapter 10, Reference: radio_group
• radiobutton() (Menubutton) : Perl tutorial, 18.14.2. Menubutton Methods
• Radiobutton widget (Perl/Tk) : Perl tutorial, 18.6. The Radiobutton Widget
• radiobuttons
• • Advanced Perl Developing, A.1.1. Radiobutton
  • Advanced Perl Developing, 14.3.3. Radiobuttons and Checkbuttons
  • Perl tutorial, 15.14. Creating Menus with Tk
• raise() (Canvas) : Perl tutorial, 18.12.3. Canvas Methods
• RaiseError attribute (DBI) : Perl tutorial, 12.2.3. Database Handles and Statement Handles
• rand()
• • Advanced Perl Developing, 4.4.2.1. Random number generation
  • Perl tutorial, 2.7. Generating Random Numbers
  • Perl tutorial, 8.6. Picking a Random Line from a File
  • Learning Perl, 3.8. Exercises
  • Perl tutorial, Chapter 5, Reference: rand
  • Perl Developing, 3.2.115. rand
  • examples of : Learning Perl, A.2. Chapter 3, Arrays and List Data
• randcap program (example) : Perl tutorial, 1.9. Controlling Case
• random
• • 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 Developing, 10.1. Persistence Issues
  • email signatures : Perl tutorial, 16.22. Program: sigrand
  • lines from files : Perl tutorial, 8.6. Picking a Random Line from a File
  • numbers
  • • Advanced Perl Developing, 4.4.2.1. Random number generation
    • Advanced Perl Developing, 4.4.2.1. Random number generation
    • Perl tutorial, 2.0. Introduction
    • Perl tutorial, 2.7. Generating Random Numbers
    • Perl Developing, 3.2.115. rand
    • Perl Developing, 3.2.158. srand
    • biasing : Perl tutorial, 2.10. Generating Biased Random Numbers
  • ordering of lines in files : Perl tutorial, 8.7. Randomizing All Lines
  • random-access I/O : Perl tutorial, 8.12. Using Random-Access I/O
• randomizing arrays : Perl tutorial, 4.17. Randomizing an Array
• range (..) operator
• • Perl tutorial, 6.8. Extracting a Range of Lines
  • Perl tutorial, 4.5.11.1. Range operator
  • Perl Developing, 2.5.15. Range Operator
  • Perl Developing, 8.2.3. Awk Traps
• range (...) operator
• • Perl tutorial, 6.8. Extracting a Range of Lines
  • Perl tutorial, 4.5.11.1. Range operator
• ranges of characters : Learning Perl, 7.3.1. Single-Character Patterns
• raw_cookie() (CGI.pm) : Perl tutorial, Chapter 10, Reference: raw_cookie
• RC_ mnemonics (HTTP::Status) : Perl tutorial, 17.3.4. HTTP::Status
• RCPT command (SMTP) : Perl tutorial, 14.1.2. The SMTP Protocol and the SMTP Session
• RDBMSs (relational databases)
• • Advanced Perl Developing, 7.1. OO: An Introduction
  • Advanced Perl Developing, 10.4. Relational Databases
• $rdev file statistic : Perl Developing, 3.2.159. stat
• re module : Perl tutorial, 8.124. re
• read()
• • Perl tutorial, 8.0. Introduction
  • Perl tutorial, 8.15. Reading Fixed-Length Records
  • Learning Perl, 17.4. Fixed-Length Random Access Databases
  • Perl tutorial, Chapter 5, Reference: read
  • Perl Developing, 3.2.116. read
• Read() (Win32::EventLog) : Perl tutorial, Chapter 19, Reference: Read
• read-only variables : Advanced Perl Developing, 3.3.2. Constants
• ReadAttr() (Win32::Console) : Perl tutorial, Chapter 19, Reference: ReadAttr
• ReadChar() (Win32::Console) : Perl tutorial, Chapter 19, Reference: ReadChar
• readdir function
• • Perl tutorial, 9.0. Introduction
  • Perl tutorial, 9.5. Processing All Files in a Directory
  • Learning Perl, 12.5. Reading a Directory Handle
  • Perl tutorial, Chapter 5, Reference: readdir
  • Perl Developing, 3.2.117. readdir
  • Perl Developing, 7.2.11. DirHandle - Supply Object Methods for Directory Handles
  • Perl Developing, 8.3.1. Time Efficiency
• ReadEntireFile() (Win32::Internet) : Perl tutorial, Chapter 19, Reference: ReadEntireFile
• reader() (Net::NNTP) : Perl tutorial, Chapter 15, Reference: reader
• ReadFile() (Win32::Internet) : Perl tutorial, Chapter 19, Reference: ReadFile
• reading
• • data via low-level system call : Perl Developing, 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 tutorial, 15.1. The NNTP Protocol
  • permissions for processes : Perl Developing, 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 : Perl Developing, 3.2.146. shmread
  • standard input : Learning Perl, 6.1. Input from STDIN
  • Usenet news : Perl tutorial, 18.4. Reading and Posting Usenet News Messages
• Readline module : Perl Developing, 8.1.4. Readline Support
• ReadLine option (PERLDB_OPTS) : Perl tutorial, 6.4. Customizing the Debugger
• readline() : Perl tutorial, Chapter 5, Reference: readline
• readlink()
• • Learning Perl, 13.3.2. Creating Hard and Soft Links with Perl
  • Perl tutorial, Chapter 5, Reference: readlink
  • Perl Developing, 3.2.118. readlink
  • example of : Learning Perl, A.12. Chapter 13, File and Directory Manipulation
• ReadlKey module : Perl Developing, 8.1.4. Readline Support
• readme command (CPAN.pm) : Perl tutorial, Chapter 2, Reference: readme
• ReadParse() (CGI.pm) : Perl tutorial, Chapter 10, Reference: ReadParse
• readpipe() : Perl tutorial, Chapter 5, Reference: readpipe
• ReadRect() (Win32::Console) : Perl tutorial, Chapter 19, Reference: ReadRect
• ready file descriptors : Perl Developing, 3.2.135. select (ready file descriptors)
• real gid
• • Perl tutorial, 4.4.1. Global Special Variables
  • Perl Developing, 2.9.3. Global Special Variables
  • Perl Developing, 7.2.13. English - Use English or awk Names for Punctuation Variables
• $REAL_GROUP_ID ($() variable
• • Perl tutorial, 4.4.1. Global Special Variables
  • Perl Developing, 2.9.3. Global Special Variables
  • Perl Developing, 7.2.13. English - Use English or awk Names for Punctuation Variables
• real uid
• • Perl tutorial, 4.4.1. Global Special Variables
  • Perl Developing, 2.9.3. Global Special Variables
  • Perl Developing, 7.2.13. English - Use English or awk Names for Punctuation Variables
• $REAL_USER_ID ($<) variable
• • Perl tutorial, 4.4.1. Global Special Variables
  • Perl Developing, 2.9.3. Global Special Variables
  • Perl Developing, 7.2.13. English - Use English or awk Names for Punctuation Variables
• real values, testing for : Perl Developing, 3.2.25. defined
• Received: header line : Perl tutorial, 3.11. Program: hopdelta
• receiving sockets : Advanced Perl Developing, 12.2.1. Receiver
• recipient() (Net::SMTP) : Perl tutorial, Chapter 14, Reference: recipient
• recno_demo program (example) : Perl tutorial, 14.7. Treating a Text File as a Database Array
• recompile command (CPAN.pm) : Perl tutorial, Chapter 2, Reference: recompile
• record delimiter
• • (see $ variables, $/ variable)
  • Perl tutorial, 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 tutorial, 4.4.1. Global Special Variables
    • Perl Developing, 2.9.3. Global Special Variables
    • Perl Developing, 6.1.2. Switches
    • Perl Developing, 7.2.13. English - Use English or awk Names for Punctuation Variables
  • output delimiter
  • • Perl tutorial, 4.4.1. Global Special Variables
    • Perl Developing, 2.9.3. Global Special Variables
    • Perl Developing, 6.1.2. Switches
    • Perl Developing, 7.2.13. English - Use English or awk Names for Punctuation Variables
• record-oriented persistence : Advanced Perl Developing, 10.3. Record-Oriented Approach
• records : Perl tutorial, 11.0. Introduction
• • binary tree structures : Perl tutorial, 11.15. Program: Binary Trees
  • closures as objects : Perl tutorial, 11.7. Using Closures Instead of Objects
  • comma-separated : (see CSV)
  • constructing : Perl tutorial, 11.9. Constructing Records
  • counting in files : Perl tutorial, 8.2. Counting Lines (or Paragraphs or Records) in a File
  • fixed-length
  • • Perl tutorial, 8.0. Introduction
    • Perl tutorial, 8.15. Reading Fixed-Length Records
  • functions for : Perl tutorial, 5.1. Perl Functions by Category
  • lastlog file : Perl tutorial, 8.20. Program: laston
  • with pattern separators, reading : Perl tutorial, 6.7. Reading Records with a Pattern Separator
  • random-access I/O : Perl tutorial, 8.12. Using Random-Access I/O
  • reading/writing to text files : Perl tutorial, 11.10. Reading and Writing Hash Records to Text Files
  • variable-length
  • • Perl tutorial, 8.9. Processing Variable-Length Text Fields
    • Perl Developing, 2.8. Formats
  • of various data strutures : Perl Developing, 4.7.5. More Elaborate Records
  • wtmp file : Perl tutorial, 8.18. Program: tailwtmp
• recursive
• • open functions : Perl Developing, 3.2.102. open
  • use of subroutines : Perl Developing, 2.7. Subroutines
  • processing files in directories : Perl tutorial, 9.7. Processing All Files in a Directory Recursively
• recv()
• • Perl tutorial, Chapter 5, Reference: recv
  • Perl Developing, 3.2.119. recv
  • Socket module : Perl tutorial, 13.1. Built-in Socket Functions
• redirect()
• • Perl tutorial, 19.8. Redirecting to a Different Location
  • Perl tutorial, Chapter 10, Reference: redirect
• Redirect() (Response object, PerlScript) : Perl tutorial, 20.2.2.3. Response methods
• redirecting : Advanced Perl Developing, 3.4.1. I/O Redirection
• • CGI error messages : Perl tutorial, 19.2. Redirecting Error Messages
  • CGI requests : Perl tutorial, 19.8. Redirecting to a Different Location
• redo operator
• • Learning Perl, 9.3. The redo Statement
  • Perl tutorial, Chapter 5, Reference: redo
  • Perl tutorial, 4.3.1.5. Loop control
  • Perl Developing, 2.6.4.4. Loop control
  • Perl Developing, 3.2.120. redo
• ref()
• • Advanced Perl Developing, 1.4. Querying a Reference
  • Advanced Perl Developing, 7.2.4. The Need for Polymorphism
  • Perl tutorial, 11.0. Introduction
  • Perl tutorial, 13.0. Introduction
  • Perl tutorial, Chapter 5, Reference: ref
  • Perl tutorial, 4.8.2. Dereferencing
  • Perl Developing, 3.2.121. ref
  • Perl Developing, 4.3.5. Other Tricks You Can Do with Hard References
• references
• • (see also scalars)
  • Advanced Perl Developing, 1. Data References and Anonymous Storage
  • Advanced Perl Developing, 1.1.1. A Reference Is Just Another Scalar
  • Advanced Perl Developing, 1.2. Using References
  • Advanced Perl Developing, 20.3.1. Scalar Values
  • Perl tutorial, 11.0. Introduction
  • Perl tutorial, 4.8. References and Complex Data Structures
  • Perl tutorial, 4.8.1. Creating References
  • Perl Developing, 4.1. What Is a Reference?
  • to anonymous arrays/hashes : Advanced Perl Developing, 1.2.3. References to Anonymous Storage
  • to arrays : Perl tutorial, 11.1. Taking References to Arrays
  • arrays of scalar references : Perl tutorial, 11.6. Creating Arrays of Scalar References
  • as hash keys : Perl tutorial, 13.15. Creating Magic Variables with tie
  • autovivification : Perl tutorial, 11.0. Introduction
  • blessed, IVs and : Advanced Perl Developing, 20.3.1.3. SVs and object pointers
  • C pointers : Advanced Perl Developing, 1. Data References and Anonymous Storage
  • in CGI programs : Learning Perl, 19.7.1. References
  • checking for : Perl Developing, 3.2.121. ref
  • circular
  • • Advanced Perl Developing, 1.6.1. Reference Counts
    • Perl Developing, 5.3.9. A Note on Garbage Collection
  • closures as objects : Perl tutorial, 11.7. Using Closures Instead of Objects
  • to constants : Advanced Perl Developing, 3.3.2. Constants
  • dereferencing : Advanced Perl Developing, 1.1.2. Dereferencing
  • to filehandles : Perl Developing, 4.2.6. Filehandle Referencers
  • to functions : Perl tutorial, 11.4. Taking References to Functions
  • as hash values : Perl tutorial, 5.12. Hashing References
  • to hashes : Perl tutorial, 11.3. Taking References to Hashes
  • hashes of arrays : Perl tutorial, 11.2. Making Hashes of Arrays
  • iterating over arrays by : Perl tutorial, 4.5. Iterating Over an Array by Reference
  • to methods : Perl tutorial, 11.8. Creating References to Methods
  • multidimensional arrays and : Perl Developing, 4.6. A Brief Tutorial: Manipulating Lists of Lists
  • multiple levels of : Advanced Perl Developing, 1.2.4. Dereferencing Multiple Levels of Indirection
  • nested data structures : Advanced Perl Developing, 1.3. Nested Data Structures
  • object references
  • • Advanced Perl Developing, 7.2.2. Unique Identity
    • Perl Developing, 4.3.4. Using Object Methods
  • objects as : Perl Developing, 5.3.3. An Object Is Simply a Referenced Thingy
  • in other languages : Advanced Perl Developing, 1.7.1. Tcl
  • to packages, indirect : Perl tutorial, 12.13. Referring to Packages Indirectly
  • passing
  • • Perl tutorial, 4.7.3. Passing References
    • Perl Developing, 2.7.2. Passing References
  • passing by : Perl tutorial, 10.5. Passing Arrays and Hashes by Reference
  • performance and : Advanced Perl Developing, 1.2.2. Performance Efficiency
  • precedence and : Advanced Perl Developing, 1.1.6. Confusion About Precedence
  • querying : Advanced Perl Developing, 1.4. Querying a Reference
  • reference count
  • • Advanced Perl Developing, 1.6.1. Reference Counts
    • Perl tutorial, 11.0. Introduction
  • returning by : Perl tutorial, 10.9. Returning More Than One Array or Hash
  • to scalars : Perl tutorial, 11.5. Taking References to Scalars
  • selective aliases : Advanced Perl Developing, 3.3.1. Selective Aliasing
  • self-referential structures : Perl tutorial, 13.13. Coping with Circular Data Structures
  • static allocation : Advanced Perl Developing, 1.1. Referring to Existing Variables
  • to subroutines
  • • (see also closures)
    • Advanced Perl Developing, 4.1. Subroutine References
    • Advanced Perl Developing, 4.3. Closures
  • SWIG and : Advanced Perl Developing, 18.3. SWIG Features
  • symbolic
  • • Advanced Perl Developing, B.6. Dynamic Behavior
    • Advanced Perl Developing, 1.5. Symbolic References
    • Advanced Perl Developing, 4.1.4. Symbolic References
    • Advanced Perl Developing, 6.1.2. Symbolic References
    • Perl tutorial, 1.8. Expanding Variables in User Input
    • Perl tutorial, 12.13. Referring to Packages Indirectly
  • syntax for : Advanced Perl Developing, B.1. References
  • typeglobs and
  • • Advanced Perl Developing, 3.2.2.1. Efficient parameter passing
    • Advanced Perl Developing, 3.3.4. References to Typeglobs
  • use strict 'refs' : Perl Developing, 7.2.59. strict - Restrict Unsafe Constructs
• referents : Perl tutorial, 11.0. Introduction
• referer() (CGI.pm) : Perl tutorial, Chapter 10, Reference: referer
• "referrer" vs. "referer" : Perl tutorial, 20.1. Fetching a URL from a Perl Script
• refile() (Mail::Folder) : Perl tutorial, Chapter 14, Reference: refile
• reflection
• • Advanced Perl Developing, 6.8. Accessing the Symbol Table
  • Advanced Perl Developing, 6.9. Language Comparisons
• regedit.exe, regedt32.exe utilities : Learning Perl on Win32 Systems, 16.4. The Registry
• -regex option (perlcc) : Perl tutorial, 3.4. The Perl Compiler
• regexes : (see regular expressions)
• RegExp tool : Advanced Perl Developing, 20.1. Reading the Source
• regexps : (see regular expressions)
• Registry access and management
• • Learning Perl on Win32 Systems, 16.4. The Registry
  • Perl tutorial, 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 tutorial, 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 tutorial, 4.6. Regular Expressions
  • Perl Developing, 1.7. Regular Expressions
  • Perl Developing, 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 tutorial, 4.6.5. Anchors
  • backreferences : Perl Developing, 1.7.4. Backreferences
  • backtracking in : Learning Perl, 7.3.2.2. Multipliers
  • character classes
  • • Learning Perl, 7.3.1. Single-Character Patterns
    • Perl tutorial, 4.6.4. Character Classes
    • Perl Developing, 1.7. Regular Expressions
  • checking if strings are valid numbers : Perl tutorial, 2.1. Checking Whether a String Is a Valid Number
  • commenting : Perl tutorial, 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 tutorial, 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 tutorial, 4.6.8. Extended Regular Expressions
    • Perl Developing, 2.4.1.4. Regular expression extensions
  • functions for : Perl tutorial, 5.1. Perl Functions by Category
  • fuzzy matching : Perl tutorial, 6.13. Approximate Matching
  • grouping patterns of : Learning Perl, 7.3.2. Grouping Patterns
  • honoring locale settings : Perl tutorial, 6.12. Honoring Locale Settings in Regular Expressions
  • matching precedence : Perl Developing, 2.4.1.2. The rules of regular expression matching
  • metacharacters : (see metacharacters)
  • multiple-byte matching : Perl tutorial, 6.18. Matching Multiple-Byte Characters
  • non-special characters of : Learning Perl, 7.3.1. Single-Character Patterns
  • pattern match variables : Perl tutorial, 4.6.7. Pattern Match Variables
  • pattern matching operators
  • • Perl tutorial, 4.5.7. Pattern Match Operators
    • Perl tutorial, 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 tutorial, 4.6.6. Quantifiers
  • special (predefined) variables
  • • Perl tutorial, 4.4.5. Regular Expression Special Variables
    • Perl Developing, 2.9.1. Regular Expression Special Variables
  • split() and : Learning Perl, 7.6.1. The split Function
  • tcgrep program : Perl tutorial, 6.22. Program: tcgrep
  • testing for invalid patterns : Perl tutorial, 6.11. Testing for a Valid Pattern
  • urlify program : Perl tutorial, 6.21. Program: urlify
  • useful and interesting (list) : Perl tutorial, 6.23. Regular Expression Grabbag
  • variable interpolation : Learning Perl, 7.4.4. Using Variable Interpolation
• rel() (URI::URL) : Perl tutorial, Chapter 17, Reference: rel
• relational databases (RDBMSs)
• • Advanced Perl Developing, 7.1. OO: An Introduction
  • Advanced Perl Developing, 10.4. Relational Databases
• relational operators
• • (see comparison operators)
  • Perl tutorial, 4.5.4.1. Relational operators
  • Perl Developing, 2.5.11. Relational Operators
• relative indexing : Advanced Perl Developing, 14.3.5.3. Insertion with relative indexing
• release()
• • Win32::Mutex module : Perl tutorial, Chapter 19, Reference: release
  • Win32::Semaphore module : Perl tutorial, Chapter 19, Reference: release
• -relheight, -relwidth options (place geometry manager) : Perl tutorial, 18.2.3. The Place Geometry Manager
• -relief option (widgets) : Perl tutorial, 18.3. Common Widget Configuration Options
• reload command (CPAN.pm) : Perl tutorial, Chapter 2, Reference: reload
• -relx, -rely options (place geometry manager) : Perl tutorial, 18.2.3. The Place Geometry Manager
• remote procedure calls (RPC)
• • Advanced Perl Developing, 13.2. Remote Procedure Calls (RPC)
  • Advanced Perl Developing, 17.1. On Code Generation
• REMOTE_ADDR variable : Perl tutorial, 9.4. CGI Environment Variables
• remote_host() (CGI.pm) : Perl tutorial, Chapter 10, Reference: remote_host
• REMOTE_HOST variable : Perl tutorial, 9.4. CGI Environment Variables
• REMOTE_IDENT variable : Perl tutorial, 9.4. CGI Environment Variables
• remote_user() (CGI.pm) : Perl tutorial, Chapter 10, Reference: remote_user
• REMOTE_USER variable : Perl tutorial, 9.4. CGI Environment Variables
• remove_header() (HTTP::Headers) : Perl tutorial, Chapter 17, Reference: remove_header
• remove_sig() (Mail::Internet) : Perl tutorial, 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 tutorial, 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) : Learning Perl on Win32 Systems, 13.2. Renaming a File
• rename script (example) : Perl tutorial, 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 tutorial, Chapter 5, Reference: rename
  • Perl Developing, 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 tutorial, Chapter 16, Reference: rename
• Rename() (Win32::Internet) : Perl tutorial, Chapter 19, Reference: Rename
• renaming files
• • Perl tutorial, 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 tutorial, 15.12. Managing the Screen
• repeat function : Advanced Perl Developing, 14.5. Timers
• -repeatdelay option
• • Scale widget : Perl tutorial, 18.13. The Scale Widget
  • Scrollbar widget : Perl tutorial, 18.9. The Scrollbar Widget
• -repeatinterval option
• • Scale widget : Perl tutorial, 18.13. The Scale Widget
  • Scrollbar widget : Perl tutorial, 18.9. The Scrollbar Widget
• repetition (x) operator
• • Perl Developing, 1.5.2. String Operators
  • Perl Developing, 2.5.7. Multiplicative Operators
• replacing array elements : Perl Developing, 3.2.154. splice
• reply() (Mail::Internet) : Perl tutorial, Chapter 14, Reference: reply
• report generating, example of : Learning Perl on Win32 Systems, 1.6.14. Listing the Secret Words
• Report() (Win32::EventLog) : Perl tutorial, Chapter 19, Reference: Report
• reporting bugs in Perl : Perl tutorial, 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 tutorial, 17.2.3. LWP::UserAgent
• Request() (Win32::Internet) : Perl tutorial, Chapter 19, Reference: Request
• Request object (PerlScript) : Perl tutorial, 20.2. Server-Side PerlScript
• request_method() (CGI.pm) : Perl tutorial, Chapter 10, Reference: request_method
• REQUEST_METHOD environment variable : Perl tutorial, 9.4. CGI Environment Variables
• requests, HTTP
• • HTTP::Request module
  • • Perl tutorial, 17.1. LWP Overview
    • Perl tutorial, 17.3.1. HTTP::Request
  • UserAgent object for
  • • Perl tutorial, 17.1. LWP Overview
    • Perl tutorial, 17.2. The LWP Modules
    • Perl tutorial, 17.2.3. LWP::UserAgent
• require()
• • Perl tutorial, Chapter 5, Reference: require
  • Perl Developing, 2.6.7. Global Declarations
  • Perl Developing, 2.9.4. Global Special Arrays
  • Perl Developing, 3.2.123. require
  • Perl Developing, 5.2. Modules
• require statement
• • Advanced Perl Developing, 6.2. Packages and Files
  • Perl tutorial, 12.0. Introduction
  • Perl tutorial, 7.2. Modules
  • trapping errors in : Perl tutorial, 12.2. Trapping Errors in require or use
• REs : (see regular expressions)
• reserved words : Perl Developing, 2.3.1. Variables
• reset()
• • Perl tutorial, Chapter 5, Reference: reset
  • Perl Developing, 3.2.124. reset
  • CGI.pm module : Perl tutorial, Chapter 10, Reference: reset
  • Net::POP3 module : Perl tutorial, Chapter 14, Reference: reset
  • Net::SMTP module : Perl tutorial, Chapter 14, Reference: reset
  • Win32::ChangeNotification module : Perl tutorial, Chapter 19, Reference: reset
• Reset()
• • Mail::POP3Client module
  • • Perl tutorial, Chapter 14, Reference: Reset
    • Perl tutorial, 14.2.8.4. Deleting and undeleting messages
  • Win32::OLE::Enum module : Perl tutorial, Chapter 19, Reference: Reset
• resizable() (Frame widget) : Perl tutorial, 18.18.1. Toplevel Methods
• resizing : (see size)
• -resolution option (Scale) : Perl tutorial, 18.13. The Scale Widget
• Resolve() (Win32::Shortcut) : Perl tutorial, Chapter 19, Reference: Resolve
• resources for further reading
• • Advanced Perl Developing, Resources
  • Perl tutorial, 1.4. Perl Resources
  • perldsc document : Advanced Perl Developing, 2. Implementing Complex Data Structures
  • perltoot document : Advanced Perl Developing, 4.4.3. Closures Versus Objects
• resources, managing shared : Perl tutorial, 19.11. Win32::NetResource
• Response object (PerlScript)
• • Perl tutorial, 20.2. Server-Side PerlScript
  • Perl tutorial, 20.2.2. The Response Object
• responses, HTTP : Perl tutorial, 17.3.2. HTTP::Response
• restarting servers on demand : Perl tutorial, 17.16. Restarting a Server on Demand
• restoring filehandles : Perl Developing, 7.2.54. SelectSaver - Save and Restore Selected Filehandle
• result : Learning Perl, 2.4. Scalar Operators
• Resume() (Win32::Process) : Perl tutorial, Chapter 19, Reference: Resume
• ResumeService() (Win32::Service) : Perl tutorial, Chapter 19, Reference: ResumeService
• retr() (Net::FTP) : Perl tutorial, Chapter 16, Reference: retr
• Retrieve() (Mail::POP3Client)
• • Perl tutorial, Chapter 14, Reference: Retrieve
  • Perl tutorial, 14.2.8.3. Retrieving the message body
• retrieve() (Storable module) : Perl tutorial, 11.13. Storing Data Structures to Disk
• retrieve_where function : Advanced Perl Developing, 11.1. Adaptor: An Introduction
• • Adaptor::DBI module : Advanced Perl Developing, 11.3.2.2. Queries
  • Adaptor::File module : Advanced Perl Developing, 11.3.1.3. Query processing
• retrieving email messages : Perl tutorial, 14.1.3. Retrieving Email with Net::POP3
• retrieving URLs : Perl tutorial, 20.1. Fetching a URL from a Perl Script
• return statement
• • Perl tutorial, 10.10. Returning Failure
  • Perl tutorial, Chapter 5, Reference: return
  • Perl tutorial, 4.7.2. Passing Arguments
  • Perl Developing, 3.2.125. return
• return context, subroutines : Perl tutorial, 10.6. Detecting Return Context
• return stack (retstack) : Advanced Perl Developing, 20.4.3. Inside Other Stacks
• return status, backwards for system() : Learning Perl, 14.1. Using system and exec
• return values
• • Perl tutorial, 10.8. Skipping Selected Return Values
  • Perl tutorial, 10.9. Returning More Than One Array or Hash
  • Perl tutorial, 10.10. Returning Failure
  • Learning Perl, 1.5.9. Making It a Bit More Modular
  • Perl Developing, 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 tutorial, 13.2.4. IO::Socket::INET Reference
• reusing code
• • Perl Developing, 5.5.8. Thinking of Code Reuse
  • Perl Developing, 8.4. Developing with Style
• reverse()
• • Perl tutorial, 1.6. Reversing a String by Word or Character
  • Perl tutorial, 4.10. Reversing an Array
  • Learning Perl, 3.4.5. The reverse Function
  • Perl tutorial, Chapter 5, Reference: reverse
  • Perl Developing, 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 tutorial, 5.8. Inverting a Hash
• reversing
• • array elements : Perl tutorial, 4.10. Reversing an Array
  • words/characters in strings : Perl tutorial, 1.6. Reversing a String by Word or Character
• revert() (HTTP::Cookies) : Perl tutorial, Chapter 17, Reference: revert
• revhash_demo program (example) : Perl tutorial, 13.15. Creating Magic Variables with tie
• rewinddir()
• • Perl tutorial, 9.5. Processing All Files in a Directory
  • Perl tutorial, Chapter 5, Reference: rewinddir
  • Perl Developing, 3.2.127. rewinddir
  • Perl Developing, 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 : Perl Developing, 2.8.1. Format Variables
• right-shift (>>) operator : Perl Developing, 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 tutorial, Chapter 5, Reference: rindex
  • Perl Developing, 3.2.128. rindex
• RLENGTH variable (awk) : Perl Developing, 6.4.2.2. a2p
• rm command, unlink() and : Learning Perl, 13.1. Removing a File
• rmdir function
• • Perl tutorial, 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 tutorial, Chapter 5, Reference: rmdir
  • Perl Developing, 3.2.129. rmdir
  • Net::FTP module : Perl tutorial, Chapter 16, Reference: rmdir
• Rmdir() (Win32::Internet) : Perl tutorial, Chapter 19, Reference: Rmdir
• rmtree() : Perl Developing, 7.2.31. File::Path - Create or Remove a Series of Directories
• rmtree program (example) : Perl tutorial, 9.8. Removing a Directory and Its Contents
• Robot User Agent : Perl tutorial, 17.2.1. LWP::RobotUA sections
• robots for web traversal : Perl tutorial, 20.11. Creating a Robot
• rollback() (DBI) : Perl tutorial, Chapter 12, Reference: rollback
• roman() (Roman module) : Perl tutorial, 2.6. Working with Roman Numerals
• Roman module : Perl tutorial, 2.6. Working with Roman Numerals
• roman numerals : Perl tutorial, 2.6. Working with Roman Numerals
• root directory (/)
• • Perl tutorial, 9.0. Introduction
  • Perl Developing, 3.2.17. chroot
• rounding floating-point numbers : Perl tutorial, 2.3. Rounding Floating-Point Numbers
• routines : (see subroutines)
• row : (see records)
• -row option (grid manager) : Perl tutorial, 18.2.2. The grid Geometry Manager
• rows() (DBI) : Perl tutorial, Chapter 12, Reference: rows
• -rowspan option (grid manager) : Perl tutorial, 18.2.2. The grid Geometry Manager
• RPC (Remote Procedure Call)
• • Advanced Perl Developing, 13.2. Remote Procedure Calls (RPC)
  • Advanced Perl Developing, 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 tutorial, 4.4.1. Global Special Variables
  • Perl Developing, 2.9.3. Global Special Variables
  • Perl Developing, 6.1.2. Switches
  • Perl Developing, 7.2.13. English - Use English or awk Names for Punctuation Variables
• RSTART variable (awk) : Perl Developing, 6.4.2.2. a2p
• RTTI (Run Time Type Identification) : Advanced Perl Developing, 6.9.3. C/C++
• rules() (LWP::RobotUA) : Perl tutorial, Chapter 17, Reference: rules
• -run option (perlcc) : Perl tutorial, 3.4. The Perl Compiler
• run time, loading modules at : Perl tutorial, 12.3. Delaying use Until Run Time
• run-time binding : Advanced Perl Developing, 7.2.4. The Need for Polymorphism
• run-time errors
• • (see errors)
  • (see exceptions)
• run-time evaluation
• • (see also eval function)
  • Advanced Perl Developing, B.6. Dynamic Behavior
  • Advanced Perl Developing, 5. Eval
  • Advanced Perl Developing, Language Syntax
  • Perl Developing, 7.2.48.8. Run-time overloading
  • in other languages : Advanced Perl Developing, 5.7. Eval in Other Languages
• run-time scoping : Perl tutorial, 10.13. Saving Global Values
• RUNAT attribute (<SCRIPT>) : Perl tutorial, 20.2. Server-Side PerlScript
• running : (see executing)
• runtests() : Perl Developing, 7.2.66. Test::Harness - Run Perl Standard Test Scripts with Statistics

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