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Index: D

• (digit) character class
• • Learning Perl, 7.3.1. Single-Character Patterns
  • Perl tutorial, 4.6.4. Character Classes
  • Perl Developing, 1.7. Regular Expressions
• (nondigit) character class : Perl tutorial, 4.6.4. Character Classes
• command (CPAN.pm) : Perl tutorial, Chapter 2, Reference: d
• command (debugger)
• • Perl tutorial, Chapter 6, Reference: d
  • Perl Developing, 8.1.1. Debugger Commands
• command (debugger)
• • Perl tutorial, Chapter 6, Reference: D
  • Perl Developing, 8.1.1. Debugger Commands
• -d 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
• -d option (perlbug) : Perl tutorial, 6.6. The perlbug Program
• /d pattern-match modifier
• • Learning Perl, 15.5. Transliteration
  • Perl Developing, 2.4.2. Pattern-Matching Operators
• -d switch, perl
• • Perl tutorial, 3.2. Command-Line Options
  • Perl Developing, 6.1.2. Switches
  • Perl Developing, 8.1.8. Alternative Debuggers: The Perl Profiler
• -D switch, perl
• • Advanced Perl Developing, 20.1. Reading the Source
  • Perl tutorial, 3.2. Command-Line Options
  • Perl Developing, 6.1.2. Switches
• daemon() (HTTP::Daemon::ClientConn) : Perl tutorial, Chapter 17, Reference: daemon
• daemon servers
• • Perl tutorial, 16.22. Program: sigrand
  • Perl tutorial, 17.15. Making a Daemon Server
• dangling else, and impossibility of : Learning Perl, 4.2. The if/unless Statement
• dash : (see - (hyphen))
• data, insecure : Perl Developing, 6.3.1. Handling Insecure Data
• data() (Net::SMTP) : Perl tutorial, Chapter 14, Reference: data
• DATA command (SMTP) : Perl tutorial, 14.1.2. The SMTP Protocol and the SMTP Session
• Data::Dumper module
• • Advanced Perl Developing, 2.5. Pretty-Printing
  • Advanced Perl Developing, 10.2.2. Data::Dumper
  • Perl tutorial, 11.11. Printing Data Structures
  • Perl tutorial, 8.39. Data::Dumper
• DATA filehandle
• • Perl tutorial, 4.4.3. Global Special Filehandles
  • Perl Developing, 2.9.5. Global Special Filehandles
• data relationships
• • (see also variables)
  • Perl tutorial, 5.15. Representing Relationships Between Data
• data_sources() (DBI) : Perl tutorial, Chapter 12, Reference: data_sources
• data structures : (see structures)
• __DATA__ token
• • Perl tutorial, 7.6. Storing Files Inside Your Program Text
  • Perl Developing, 2.3.2.7. Other literal tokens
  • Perl Developing, 2.9.5. Global Special Filehandles
• data types : Perl tutorial, 4.2. Data Types and Variables
• • built-in : Perl Developing, 2.2. Built-in Data Types
  • circular data structures : Perl tutorial, 13.13. Coping with Circular Data Structures
  • classes as structs : Perl tutorial, 13.5. Using Classes as Structs
  • complex data structures : Perl tutorial, 4.8. References and Complex Data Structures
  • scalars : (see scalars)
  • translation : Advanced Perl Developing, 18.1. Writing an Extension: Overview
  • typeglobs : Perl Developing, 2.3.6. Typeglobs and Filehandles
• database interface modules : Learning Perl on Win32 Systems, B.2.6. Database Interfaces
• database queries : Perl tutorial, 19.7. Formatting Lists and Tables with HTML Shortcuts
• databases
• • Learning Perl, 17.4. Fixed-Length Random Access Databases
  • Learning Perl, 17.5. Variable-Length (Text) Databases
  • Perl tutorial, 12. Databases and Perl
  • access : Perl tutorial, 14.0. Introduction
  • • converting between DBM files : Perl tutorial, 14.3. Converting Between DBM Files
    • emptying DBM files : Perl tutorial, 14.2. Emptying a DBM File
    • ggh program : Perl tutorial, 14.11. Program: ggh&nbsp- Grep Netscape Global History
    • locking DBM files : Perl tutorial, 14.5. Locking DBM Files
    • making DBM files : Perl tutorial, 14.1. Making and Using a DBM File
    • merging DBM files : Perl tutorial, 14.4. Merging DBM Files
    • persistent data : Perl tutorial, 14.9. Persistent Data
    • sorting large DBM files : Perl tutorial, 14.6. Sorting Large DBM Files
    • SQL queries
    • • Perl tutorial, 14.10. Executing an SQL Command Using DBI and DBD
      • Perl tutorial, 19.7. Formatting Lists and Tables with HTML Shortcuts
    • storing complex data in DBM files : Perl tutorial, 14.8. Storing Complex Data in a DBM File
    • text files as database arrays : Perl tutorial, 14.7. Treating a Text File as a Database Array
  • database handles (DBI methods) : Perl tutorial, 12.2.3. Database Handles and Statement Handles
  • DBDs (database drivers) : Perl tutorial, 12.2.1. Database Drivers (DBDs)
  • DBI module : Perl tutorial, 12.2. Design of DBI
  • DBM (Database Management) facility : Perl tutorial, 12.1. DBM Databases and DBM Hashes
  • fixed-length records in : Learning Perl on Win32 Systems, 17.4. Fixed-Length Random-Access Databases
  • generating schema for : Advanced Perl Developing, 17.2.1. Oh, and Can You Do This Too?
  • human-readable : Learning Perl on Win32 Systems, 17.5. Variable-Length (Text) Databases
  • locking : Perl Developing, 7.2.8.7. Locking databases
  • managing with DBM library : Learning Perl, 17.1. DBM Databases and DBM Hashes
  • mapping : Advanced Perl Developing, 11.2.4. Multivalued Attributes and Database Mapping
  • random-access : Learning Perl on Win32 Systems, 17.4. Fixed-Length Random-Access Databases
• dataend() (Net::SMTP) : Perl tutorial, Chapter 14, Reference: dataend
• datagram sockets
• • Perl tutorial, 17.0. Introduction
  • Perl tutorial, 17.4. Setting Up a UDP Client
• DataReceiveTimeout() (Win32::Internet) : Perl tutorial, Chapter 19, Reference: DataReceiveTimeout
• datasend() (Net::SMTP) : Perl tutorial, Chapter 14, Reference: datasend
• DataSendTimeout() (Win32::Internet) : Perl tutorial, Chapter 19, Reference: DataSendTimeout
• date() (Net::NNTP)
• • (see also localtime())
  • Perl tutorial, Chapter 15, Reference: date
  • examples of
  • • Learning Perl, A.13. Chapter 14, Process Management
    • Learning Perl, 1.4. Basic Concepts
    • Learning Perl, 14.1. Using system and exec
• date and time
• • Perl tutorial, 3.0. Introduction
  • Perl Developing, 3.2.173. time
  • alarms : Perl Developing, 3.2.5. alarm
  • arithmetic with : Perl tutorial, 3.4. Adding to or Subtracting from a Date
  • converting to/from Epoch seconds : Perl tutorial, 3.2. Converting DMYHMS to Epoch Seconds
  • Date::DateCalc module
  • • Perl tutorial, 3.0. Introduction
    • Perl tutorial, 3.4. Adding to or Subtracting from a Date
    • Perl tutorial, 3.5. Difference of Two Dates
    • Perl tutorial, 3.6. Day in a Week/Month/Year or Week Number
  • Date::Manip module
  • • Perl tutorial, 3.0. Introduction
    • Perl tutorial, 3.7. Parsing Dates and Times from Strings
    • Perl tutorial, 3.8. Printing a Date
    • Perl tutorial, 3.11. Program: hopdelta
  • days, calculating : Perl tutorial, 3.6. Day in a Week/Month/Year or Week Number
  • executing, Benchmark for : Perl Developing, 7.2.4. Benchmark - Check and Compare Running Times of Code
  • file access/modification
  • • Perl tutorial, 9.1. Getting and Setting Timestamps
    • Perl Developing, 3.2.159. stat
    • Perl Developing, 3.2.186. utime
  • file age : Perl Developing, 2.5.10. Named Unary and File Test Operators
  • functions for : Perl tutorial, 5.1. Perl Functions by Category
  • Greenwich Mean (GMT) : Perl Developing, 3.2.70. gmtime
  • high-resolution timers : Perl tutorial, 3.9. High-Resolution Timers
  • hopdelta program : Perl tutorial, 3.11. Program: hopdelta
  • HTTP::Date module : Perl tutorial, 17.3.5. HTTP::Date
  • limits on operations : Perl Developing, 6.2.1. Signals
  • for local timezone : Perl Developing, 3.2.88. localtime
  • local, computing : Perl Developing, 7.2.75. Time::Local - Efficiently Compute Time from Local and GMT Time
  • manipulation of
  • • Learning Perl, 1.5.16. Maintaining a Last-Good-Guess Database
    • Learning Perl on Win32 Systems, 1.6.16. Maintaining a Last-Good-Guess Database
  • modifying timestamps
  • • Learning Perl, 13.7. Modifying Timestamps
    • Learning Perl on Win32 Systems, 13.5. Modifying Timestamps
  • parsing information from strings : Perl tutorial, 3.7. Parsing Dates and Times from Strings
  • printing : Perl tutorial, 3.8. Printing a Date
  • script running : Perl Developing, 2.5.10. Named Unary and File Test Operators
  • sleeping : Perl Developing, 3.2.150. sleep
  • sleeps : Perl tutorial, 3.10. Short Sleeps
  • sorting mail by (example) : Perl tutorial, 10.17. Program: Sorting Your Mail
  • Time modules
  • • Time::gmtime module
    • • Perl tutorial, 3.0. Introduction
      • Perl tutorial, 3.3. Converting Epoch Seconds to DMYHMS
      • Perl tutorial, 8.159. Time::gmtime
    • Time::HiRes module : Perl tutorial, 3.9. High-Resolution Timers
    • Time::Local module
    • • Perl tutorial, 3.0. Introduction
      • Perl tutorial, 3.2. Converting DMYHMS to Epoch Seconds
      • Perl tutorial, 8.160. Time::Local
    • Time::localtime module
    • • Perl tutorial, 3.0. Introduction
      • Perl tutorial, 8.161. Time::localtime
    • Time::timelocal : Perl tutorial, 3.3. Converting Epoch Seconds to DMYHMS
    • Time::tm module
    • • Perl tutorial, 3.0. Introduction
      • Perl tutorial, 8.162. Time::tm
  • timing out operations : Perl tutorial, 16.21. Timing Out an Operation
  • today's : Perl tutorial, 3.1. Finding Today's Date
  • UNIX internal format
  • • Learning Perl, 13.7. Modifying Timestamps
    • Learning Perl on Win32 Systems, 13.5. Modifying Timestamps
  • years : Perl tutorial, 3.0. Introduction
• date_difference() : Perl tutorial, 3.5. Difference of Two Dates
• date_time_difference() : Perl tutorial, 3.5. Difference of Two Dates
• DateCalc() : Perl tutorial, 3.11. Program: hopdelta
• dates_difference()
• • Perl tutorial, 3.5. Difference of Two Dates
  • Perl tutorial, 3.6. Day in a Week/Month/Year or Week Number
• datesort program (example) : Perl tutorial, 10.17. Program: Sorting Your Mail
• day_of_week() : Perl tutorial, 3.6. Day in a Week/Month/Year or Week Number
• days : (see date and time)
• daytime server : Learning Perl on Win32 Systems, C.1. A Simple Client
• DB package, caller function : Perl Developing, 3.2.10. caller
• db2gdbm program (example) : Perl tutorial, 14.3. Converting Between DBM Files
• DB_File module
• • Advanced Perl Developing, 10.3.3. Berkeley DB
  • Perl tutorial, 11.14. Transparently Persistent Data Structures
  • Perl tutorial, 8.40. DB_File
  • Perl Developing, 7.2.1. AnyDBM_File - Provide Framework for Multiple DBMs
  • Perl Developing, 7.2.8. DB_File - Access to Berkeley DB
  • sorting large DBM files : Perl tutorial, 14.6. Sorting Large DBM Files
  • text files as database arrays : Perl tutorial, 14.7. Treating a Text File as a Database Array
• DB_RECNO access method : Perl tutorial, 8.8. Reading a Particular Line in a File
• DBD module : Perl tutorial, 14.10. Executing an SQL Command Using DBI and DBD
• DBDs (database drivers)
• • Perl tutorial, 12. Databases and Perl
  • Perl tutorial, 12.2.1. Database Drivers (DBDs)
  • DBD::Oracle module : Advanced Perl Developing, 10.4.1. DBI (Database Interface)
• DBI_ environment variables : Perl tutorial, 12.4. DBI Environment Variables
• DBI module
• • Advanced Perl Developing, 11.1. Adaptor: An Introduction
  • Perl tutorial, 14.10. Executing an SQL Command Using DBI and DBD
  • Perl tutorial, 19.7. Formatting Lists and Tables with HTML Shortcuts
  • Perl tutorial, 20.9. Creating HTML Templates
  • Perl tutorial, 12. Databases and Perl
  • Perl tutorial, 12.2. Design of DBI
  • database and statement handles : Perl tutorial, 12.2.3. Database Handles and Statement Handles
  • database mapping : Advanced Perl Developing, 11.2.4. Multivalued Attributes and Database Mapping
  • environment variables for : Perl tutorial, 12.4. DBI Environment Variables
  • implementation of : Advanced Perl Developing, 11.3.2. Adaptor::DBI
  • methods of : Perl tutorial, 12.3. DBI Methods
  • object uniqueness and : Advanced Perl Developing, 11.2.8. Uniqueness of Objects in Memory
• DBI specification : Advanced Perl Developing, 10.4.1. DBI (Database Interface)
• dblockdemo program (example) : Perl tutorial, 14.5. Locking DBM Files
• DBM array : Learning Perl, 17.1. DBM Databases and DBM Hashes
• dbm close function : Perl Developing, 3.2.23. dbmclose
• DBM files
• • Learning Perl, 1.5.16. Maintaining a Last-Good-Guess Database
  • Learning Perl on Win32 Systems, 1.6.16. Maintaining a Last-Good-Guess Database
  • Perl Developing, 3.2.23. dbmclose
  • complex data in : Perl tutorial, 14.8. Storing Complex Data in a DBM File
  • converting between : Perl tutorial, 14.3. Converting Between DBM Files
  • deleting from : Perl Developing, 3.2.26. delete
  • emptying : Perl tutorial, 14.2. Emptying a DBM File
  • GDBM files
  • • Perl tutorial, 14.0. Introduction
    • Perl tutorial, 14.3. Converting Between DBM Files
  • locking : Perl tutorial, 14.5. Locking DBM Files
  • making and using : Perl tutorial, 14.1. Making and Using a DBM File
  • merging : Perl tutorial, 14.4. Merging DBM Files
  • NDBM files : Perl tutorial, 14.0. Introduction
  • sorting : Perl tutorial, 14.6. Sorting Large DBM Files
  • tie statement with : Advanced Perl Developing, 9.3. Tying Hashes
• DBM libraries : Perl tutorial, 14.0. Introduction
• DBM modules
• • Advanced Perl Developing, 10.3.1. DBM
  • Learning Perl, 17.1. DBM Databases and DBM Hashes
  • Perl tutorial, 12.1. DBM Databases and DBM Hashes
  • Perl Developing, 7.2.1. AnyDBM_File - Provide Framework for Multiple DBMs
• dbmclose()
• • Perl tutorial, 14.1. Making and Using a DBM File
  • Learning Perl, 1.5.17. The Final Programs
  • Learning Perl, 17.2. Opening and Closing DBM Hashes
  • Perl tutorial, Chapter 5, Reference: dbmclose
  • example of : Learning Perl on Win32 Systems, 1.6.17. The Final Programs
• dbmopen()
• • Perl tutorial, 14.0. Introduction
  • Perl tutorial, 14.1. Making and Using a DBM File
  • Learning Perl, 17.2. Opening and Closing DBM Hashes
  • Perl tutorial, Chapter 5, Reference: dbmopen
  • Perl tutorial, 12.1. DBM Databases and DBM Hashes
  • Perl Developing, 3.2.24. dbmopen
  • Perl Developing, 7.2.1. AnyDBM_File - Provide Framework for Multiple DBMs
  • examples of
  • • Learning Perl, A.16. Chapter 17, User Database Manipulation
    • Learning Perl, 1.5.16. Maintaining a Last-Good-Guess Database
    • Learning Perl, 1.5.17. The Final Programs
    • Learning Perl on Win32 Systems, 1.6.17. The Final Programs
    • Learning Perl on Win32 Systems, 1.6.16. Maintaining a Last-Good-Guess Database
• dbusers program (example) : Perl tutorial, 14.10. Executing an SQL Command Using DBI and DBD
• dclone() : Perl tutorial, 11.12. Copying Data Structures
• deadlocks
• • Advanced Perl Developing, 12.2.3. Bidirectional Communications
  • Advanced Perl Developing, 13.2. Remote Procedure Calls (RPC)
• deallocating memory
• • Advanced Perl Developing, 20.5.6.1. Recommended memory allocation and deallocation routines
  • Perl Developing, 5.3.9. A Note on Garbage Collection
• debug()
• • Mail::Folder module : Perl tutorial, Chapter 14, Reference: debug
  • Text widget : Perl tutorial, 18.11.2. Text Methods
• debug_print() (Mail::Folder) : Perl tutorial, Chapter 14, Reference: debug_print
• debugger
• • Advanced Perl Developing, 20.1. Reading the Source
  • Learning Perl, D.2. The Debugger
  • Perl tutorial, 6.1. The Perl Debugger
  • commands for : Perl tutorial, 6.2. Debugger Commands
  • customizing : Perl tutorial, 6.4. Customizing the Debugger
• debugging
• • (see also taint checking)
  • Perl tutorial, 6. Debugging
  • Perl Developing, 6.1.2. Switches
  • Perl Developing, 6.3.1. Handling Insecure Data
  • Perl Developing, 8.1. The Perl Debugger
  • bug reports : Perl Developing, Bug Reports
  • CGI scripts
  • • Perl tutorial, 19.0. Introduction
    • Perl tutorial, 19.3. Fixing a 500 Server Error
    • Perl tutorial, 10.6. Debugging
  • checking syntax without running : Perl tutorial, 3.2. Command-Line Options
  • controlling from scripts : Perl Developing, 8.1.2. Using the Debugger
  • core dumps
  • • Perl tutorial, 3.2. Command-Line Options
    • Perl Developing, 3.2.29. dump
    • Perl Developing, 6.1.2. Switches
  • customizing : Perl Developing, 8.1.3. Debugger Customization
  • -d, -D options (perl)
  • • Advanced Perl Developing, 20.1. Reading the Source
    • Perl tutorial, 3.2. Command-Line Options
    • Perl tutorial, 6.1. The Perl Debugger
    • Perl tutorial, 6.5. The Perl Profiler
    • Perl Developing, 6.1.2. Switches
    • Perl Developing, 8.1.8. Alternative Debuggers: The Perl Profiler
  • HTTP exchanges : Perl tutorial, 19.9. Debugging the Raw HTTP Exchange
  • Perl profiler (DProf) : Perl tutorial, 6.5. The Perl Profiler
  • perlbug program : Perl tutorial, 6.6. The perlbug Program
  • UNIX security bugs : Perl Developing, 6.3.1.3. Security bugs
• $DEBUGGING ($^D) variable
• • 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
• decimal numbers, converting
• • Perl tutorial, 2.4. Converting Between Binary and Decimal
  • Perl tutorial, 2.16. Converting Between Octal and Hexadecimal
• decimal points
• • Learning Perl, 2.2.2. Float Literals
  • Perl Developing, 2.8. Formats
• declarations
• • Perl tutorial, 4.1. Program Structure
  • Perl Developing, 2.6. Statements and Declarations
  • formats : Perl Developing, 2.8. Formats
  • global
  • • Perl Developing, 2.6.7. Global Declarations
    • Perl Developing, 7.2.76. vars - Predeclare Global Variable Names
  • packages
  • • Perl tutorial, 7.1. Namespaces and Packages
    • Perl Developing, 2.6.8. Scoped Declarations
    • Perl Developing, 3.2.106. package
  • private vs. local : Perl tutorial, 4.7.4. Private and Local Variables
  • subroutines
  • • Perl tutorial, 4.7. Subroutines
    • Perl Developing, 2.6.7. Global Declarations
    • Perl Developing, 2.7. Subroutines
    • Perl Developing, 3.2.161. sub
    • Perl Developing, 7.2.60. subs - Predeclare Subroutine Names
  • variables
  • • Perl tutorial, 4.2.6. Declarations and Scope
    • Perl Developing, 2.6. Statements and Declarations
    • Perl Developing, 2.6.8. Scoped Declarations
    • Perl Developing, 7.2.76. vars - Predeclare Global Variable Names
• decryption : (see encryption)
• deep binding : Advanced Perl Developing, 4.5.2. Python
• deep copies : Perl tutorial, 11.12. Copying Data Structures
• default filehandle
• • Learning Perl, 10.4. Using Filehandles
  • Learning Perl on Win32 Systems, 10.5. Using Filehandles
• default package : Perl Developing, 2.6.8. Scoped Declarations
• 'DEFAULT' string : Perl Developing, 6.2.1. Signals
• default string values : Perl tutorial, 1.2. Establishing a Default Value
• default values, implemented with || operator
• • Learning Perl, 1.5.9. Making It a Bit More Modular
  • Learning Perl on Win32 Systems, 1.6.9. Making It a Bit More Modular
• DEFAULT, as special value for %SIG : Learning Perl, 14.6. Sending and Receiving Signals
• default_port() (URI::URL) : Perl tutorial, Chapter 17, Reference: default_port
• defaults() (CGI.pm) : Perl tutorial, Chapter 10, Reference: defaults
• defensive developing : Learning Perl, 15.4. Advanced Sorting
• defined operator
• • Perl tutorial, 1.2. Establishing a Default Value
  • Perl tutorial, Chapter 5, Reference: defined
  • Perl Developing, 3.2.25. defined
  • Perl Developing, 5.4.3. Tying Hashes
• definedness
• • Perl tutorial, 1.0. Introduction
  • Perl tutorial, 1.2. Establishing a Default Value
• defining formats : Learning Perl, 11.2. Defining a Format
• deg2rad() (example) : Perl tutorial, 2.11. Doing Trigonometry in Degrees, not Radians
• degrees vs. radians : Perl tutorial, 2.11. Doing Trigonometry in Degrees, not Radians
• deiconify() (Frame widget) : Perl tutorial, 18.18.1. Toplevel Methods
• DEL character, completion and : Perl Developing, 7.2.65. Term::Complete - Word Completion Module
• del_group() (News::Newsrc) : Perl tutorial, Chapter 15, Reference: del_group
• delay() (LWP::RobotUA) : Perl tutorial, Chapter 17, Reference: delay
• delaying module loading : Perl tutorial, 12.3. Delaying use Until Run Time
• delegation
• • Advanced Perl Developing, 8.2. Delegation
  • Perl Developing, 5.5.11. Delegation (the "Passes-the-Buck-to" Relationship)
• delete()
• • Perl tutorial, 5.3. Deleting from a Hash
  • Learning Perl, 5.4.4. The delete Function
  • Learning Perl, 17.3. Using a DBM Hash
  • Learning Perl on Win32 Systems, 5.4.4. The delete Function
  • Learning Perl on Win32 Systems, 17.3. Using a DBM Hash
  • Perl tutorial, Chapter 5, Reference: delete
  • Perl Developing, 3.2.26. delete
  • Canvas widget : Perl tutorial, 18.12.3. Canvas Methods
  • CGI.pm module : Perl tutorial, Chapter 10, Reference: delete
  • Entry widget : Perl tutorial, 18.8.2. Entry Methods
  • HTML::Parser module : Perl tutorial, Chapter 17, Reference: delete
  • Listbox widget : Perl tutorial, 18.10.2. Listbox Methods
  • Mail::Send module : Perl tutorial, Chapter 14, Reference: delete
  • Menu widget : Perl tutorial, 18.15.2. Menu Methods
  • multiple hash key values : Perl tutorial, 5.7. Hashes with Multiple Values Per Key
  • Net::FTP module : Perl tutorial, Chapter 16, Reference: delete
  • Net::POP3 module : Perl tutorial, Chapter 14, Reference: delete
  • Text widget : Perl tutorial, 18.11.2. Text Methods
  • Tie::IxHash module and : Perl tutorial, 5.6. Retrieving from a Hash in Insertion Order
• Delete()
• • Mail::POP3Client module
  • • Perl tutorial, Chapter 14, Reference: Delete
    • Perl tutorial, 14.2.8.4. Deleting and undeleting messages
  • Win32::Internet module : Perl tutorial, Chapter 19, Reference: Delete
• delete_all() (CGI.pm) : Perl tutorial, Chapter 10, Reference: delete_all
• Delete as interrupt signal : Learning Perl, 14.6. Sending and Receiving Signals
• delete_content() (HTML::Parser) : Perl tutorial, Chapter 17, Reference: delete_content
• delete_label() (Mail::Folder) : Perl tutorial, Chapter 14, Reference: delete_label
• delete_message() (Mail::Folder) : Perl tutorial, Chapter 14, Reference: delete_message
• DELETE method : Perl Developing, 5.4.3. Tying Hashes
• delete()
• DeleteKey() (Win32::Registry)
• • Learning Perl on Win32 Systems, 16.6.1. More Registry Operations
  • Perl tutorial, Chapter 19, Reference: DeleteKey
• DeleteValue() (Win32::Registry) : Perl tutorial, Chapter 19, Reference: DeleteValue
• deleting
• • array elements
  • • Perl Developing, 3.2.143. shift
    • Perl Developing, 3.2.154. splice
  • breakpoints : Perl Developing, 8.1.1. Debugger Commands
  • characters
  • • Learning Perl, 15.5. Transliteration
    • Perl Developing, 3.2.13. chomp
  • clearing the screen : Perl tutorial, 15.3. Clearing the Screen
  • directories
  • • Perl Developing, 3.2.129. rmdir
    • Perl Developing, 3.2.181. unlink
    • Perl Developing, 7.2.31. File::Path - Create or Remove a Series of Directories
  • directories and their contents : Perl tutorial, 9.8. Removing a Directory and Its Contents
  • DOS shell window : Perl tutorial, 15.17. Removing the DOS Shell Window with Windows Perl/Tk
  • emptying DBM files : Perl tutorial, 14.2. Emptying a DBM File
  • files
  • • Perl tutorial, 9.2. Deleting a File
    • Perl Developing, 3.2.181. unlink
  • hash elements
  • • Perl tutorial, 5.3. Deleting from a Hash
    • Perl Developing, 3.2.26. delete
  • HTML tags from strings : Perl tutorial, 20.6. Extracting or Removing HTML Tags
  • last line of files : Perl tutorial, 8.10. Removing the Last Line of a File
  • Registry keys : Learning Perl on Win32 Systems, 16.6.1. More Registry Operations
  • selected subroutine return values : Perl tutorial, 10.8. Skipping Selected Return Values
  • whitespace at string ends : Perl tutorial, 1.14. Trimming Blanks from the Ends of a String
• delimiters, for tr : Learning Perl, 15.5. Transliteration
• delta() (Scrollbar) : Perl tutorial, 18.9.1. Scrollbar Methods
• denial of resource attacks : Advanced Perl Developing, 20.2.2.3. Security features
• Deparse backend (Perl compiler) : Perl tutorial, 3.4. The Perl Compiler
• dequote() : Perl tutorial, 1.11. Indenting Here Documents
• dereferencing
• • (see
  • (see also references)
  • Advanced Perl Developing, 1.1.2. Dereferencing
  • Perl tutorial, 4.8.2. Dereferencing
  • Perl tutorial, 7.4. Object Syntax
  • Perl Developing, 4.1. What Is a Reference?
  • Perl Developing, 4.3.1. Using a Variable as a Variable Name
  • Perl Developing, 4.3.3. Using the Arrow Operator
  • Perl Developing, 4.6.5. Common Mistakes
  • automatic : Advanced Perl Developing, 1.1.8. No Automatic Dereferencing
  • multiple levels of indirection : Advanced Perl Developing, 1.2.4. Dereferencing Multiple Levels of Indirection
  • operator for : (see - (hyphen), -> (arrow) operator)
  • subroutine references : Advanced Perl Developing, 4.1.3. Dereferencing Subroutine References
• derived classes
• • Perl tutorial, 13.0. Introduction
  • Perl Developing, 5.3.4. A Class Is Simply a Package
  • Perl Developing, 5.5.1. Object-Oriented Scaling Tips
• deselect()
• • Checkbutton widget : Perl tutorial, 18.5.1. Checkbutton Methods
  • Radiobutton widget : Perl tutorial, 18.6.1. Radiobutton Methods
• DESTROY function
• • Advanced Perl Developing, 7.2.7. Object Destruction
  • Advanced Perl Developing, 9.1. Tying Scalars
  • Perl tutorial, 7.3. Object-Oriented Perl
  • Perl Developing, 5.4.1. Tying Scalars
  • Perl Developing, 5.4.2. Tying Arrays
  • Perl Developing, 5.4.3. Tying Hashes
• destroying
• • modules/packages : Advanced Perl Developing, 6.3. Package Initialization and Destruction
  • objects : Advanced Perl Developing, 7.2.7. Object Destruction
• destructors
• • Perl tutorial, 13.0. Introduction
  • Perl tutorial, 13.2. Destroying an Object
  • Perl Developing, 5.3.7. Destructors
• detecting tainted data : Perl Developing, 6.3.1.1. Detecting and laundering tainted data
• deterministic finite automata : Perl tutorial, 6.0. Introduction
• $dev file statistic : Perl Developing, 3.2.159. stat
• Devel modules
• • Devel::Dump module : Advanced Perl Developing, 20.3.2.1. Inside AVs
  • Devel::Peek module
  • • Advanced Perl Developing, 20.1. Reading the Source
    • Advanced Perl Developing, 20.3.1.2. Inside SVs
  • Devel::RegExp module : Advanced Perl Developing, 20.1. Reading the Source
  • Devel::SelfStubber module
  • • Perl tutorial, 8.41. Devel::SelfStubber
    • Perl Developing, 7.2.9. Devel::SelfStubber - Generate Stubs for a SelfLoading Module
  • Devel::Symdump module : Advanced Perl Developing, 20.1. Reading the Source
• DFA (deterministic finite automata) : Perl tutorial, 6.0. Introduction
• diagnostic messages
• • (see error messages)
  • (see warning messages)
• diagnostics module
• • Perl tutorial, 8.42. diagnostics
  • Perl Developing, 7.2.10. diagnostics - Force Verbose Warning Diagnostics
• dialog boxes with Tk toolkit : Perl tutorial, 15.15. Creating Dialog Boxes with Tk
• DialogBox widget (Tk) : Perl tutorial, 15.15. Creating Dialog Boxes with Tk
• diamond operator (<>) : (see <> (angle brackets), <...> (angle, diamond, line-input) operator)
• Dict module : Perl Developing, 7.2.53. Search::Dict - Search for Key in Dictionary File
• dictionary file : Perl Developing, 7.2.53. Search::Dict - Search for Key in Dictionary File
• die()
• • Advanced Perl Developing, B.7. Exception Handling
  • Advanced Perl Developing, 5.2. The Block Form: Exception Handling
  • Perl tutorial, 10.12. Handling Exceptions
  • Learning Perl, 1.5.13. Many Secret Word Files in the Current Directory
  • Learning Perl, 10.3. A Slight Diversion: die
  • Learning Perl on Win32 Systems, 1.6.13. Many Secret Word Files in the Current Directory
  • Learning Perl on Win32 Systems, 10.4. A Slight Diversion: die
  • Perl tutorial, Chapter 5, Reference: die
  • Perl tutorial, 4.9. Filehandles
  • Perl Developing, 3.2.27. die
  • examples of
  • • Learning Perl, A.11. Chapter 12, Directory Access
    • Learning Perl, 13.3.2. Creating Hard and Soft Links with Perl
  • exit function versus : Perl Developing, 3.2.35. exit
  • time-outs and : Advanced Perl Developing, 5.6. Using Eval for Time-Outs
• __DIE__ token
• • Perl tutorial, 16.15. Installing a Signal Handler
  • Perl Developing, 2.9.4. Global Special Arrays
• differences of lists : Perl tutorial, 4.7. Finding Elements in One Array but Not Another
• digits : Perl Developing, 1.7. Regular Expressions
• • backslashed : Perl Developing, 2.4.1.2. The rules of regular expression matching
  • in names : Perl Developing, 2.3.1. Variables
• -digits option (Scale) : Perl tutorial, 18.13. The Scale Widget
• dir() (Net::FTP) : Perl tutorial, Chapter 16, Reference: dir
• directories : Perl tutorial, 9.0. Introduction
• • changing working : Perl Developing, 3.2.11. chdir
  • closing : Perl Developing, 3.2.19. closedir
  • copying or moving files : Perl tutorial, 9.3. Copying or Moving a File
  • creating
  • • Perl Developing, 3.2.92. mkdir
    • Perl Developing, 7.2.31. File::Path - Create or Remove a Series of Directories
  • deleting
  • • Perl tutorial, 9.8. Removing a Directory and Its Contents
    • Perl Developing, 3.2.129. rmdir
    • Perl Developing, 3.2.181. unlink
    • Perl Developing, 7.2.31. File::Path - Create or Remove a Series of Directories
  • deleting files in : Perl tutorial, 9.2. Deleting a File
  • for email messages : Perl tutorial, 14.2.3. Handle Folders with Mail::Folder
  • file-related functions : Perl tutorial, 5.1. Perl Functions by Category
  • functions for : Perl tutorial, 5.1. Perl Functions by Category
  • getting pathname of : Perl Developing, 7.2.7. Cwd - Get Pathname of Current Working Directory
  • of modules : Perl tutorial, 12.7. Keeping Your Own Module Directory
  • multiple names for same file : Perl tutorial, 9.4. Recognizing Two Names for the Same File
  • opendir function : Perl Developing, 3.2.103. opendir
  • parsing filenames : Perl tutorial, 9.10. Splitting a Filename into Its Component Parts
  • prepending to @INC : Perl Developing, 6.1.2. Switches
  • processing all files in
  • • Perl tutorial, 9.5. Processing All Files in a Directory
    • Perl tutorial, 9.7. Processing All Files in a Directory Recursively
  • reading entries from : Perl Developing, 3.2.117. readdir
  • recursively duplicating : Perl tutorial, 9.11. Program: symirror
  • renaming files
  • • Perl tutorial, 9.9. Renaming Files
    • Learning Perl, 13.2. Renaming a File
  • rewinddir function : Perl Developing, 3.2.127. rewinddir
  • root, redefining : Perl Developing, 3.2.17. chroot
  • seekdir function
  • • Learning Perl on Win32 Systems, 13.2. Renaming a File
    • Perl Developing, 3.2.133. seekdir
  • sorting contents of
  • • Perl tutorial, 9.0. Introduction
    • Perl tutorial, 9.12. Program: lst
  • timestamps : Perl tutorial, 9.1. Getting and Setting Timestamps
• directory handles
• • (see also filehandles)
  • Advanced Perl Developing, 3.4. Filehandles, Directory Handles, and Formats
  • Perl tutorial, 9.5. Processing All Files in a Directory
  • Learning Perl, 12.3. Directory Handles
  • creating : Learning Perl on Win32 Systems, 12.4. Opening and Closing a Directory Handle
  • modules/packages and : Advanced Perl Developing, 6.1. Basic Package
• DirHandle module
• • Advanced Perl Developing, 3.4. Filehandles, Directory Handles, and Formats
  • Perl tutorial, 8.43. DirHandle
  • Perl Developing, 7.2.11. DirHandle - Supply Object Methods for Directory Handles
• dirname()
• • Perl tutorial, 9.10. Splitting a Filename into Its Component Parts
  • Perl Developing, 7.2.27. File::Basename - Parse File Specifications
• disablecache() routine : Perl Developing, 7.2.4. Benchmark - Check and Compare Running Times of Code
• -disabledforeground option (widgets) : Perl tutorial, 18.3. Common Widget Configuration Options
• disconnect() (DBI) : Perl tutorial, Chapter 12, Reference: disconnect
• disk usage, library : Perl tutorial, 14.0. Introduction
• dispatch tables : Advanced Perl Developing, 4.2.1. Dispatch Table
• Display() (Win32::Console) : Perl tutorial, Chapter 19, Reference: Display
• distribution, Perl
• • Perl Developing, 8.5. Distribution and Installation
  • Perl Developing, The Perl Distribution
• distributions() (Net::NNTP) : Perl tutorial, Chapter 15, Reference: distributions
• divide-by-zero error, trapping : Advanced Perl Developing, 5.2. The Block Form: Exception Handling
• division operators
• • (see also multiplication operators)
  • Learning Perl, 2.4.1. Operators for Numbers
  • Perl tutorial, 4.5.3. Arithmetic Operators
• @dl_ and dl_ variables : Perl Developing, 7.2.12.1. Internal interface summary
• dlineinfo() (Text widget) : Perl tutorial, 18.11.2. Text Methods
• DMYHMS values : (see date and time)
• DNS lookups : Perl tutorial, 18.1. Simple DNS Lookups
• do()
• • Perl tutorial, 8.16. Reading Configuration Files
  • Perl tutorial, Chapter 5, Reference: do
  • DBI module : Perl tutorial, Chapter 12, Reference: do
• do loops
• • Perl tutorial, 4.3.1.4. Modifiers
  • Perl Developing, 2.6.1. Simple Statements
  • Perl Developing, 3.2.28. do
  • Perl Developing, 8.2.1. Universal Blunders
• document object (PerlScript) : Perl tutorial, 20.1. Client-Side PerlScript
• DOCUMENT_ROOT variable : Perl tutorial, 9.4. CGI Environment Variables
• documentation
• • Learning Perl on Win32 Systems, 1.5.1. Documentation
  • Perl tutorial, 2.5. Documentation
  • tutorials on Perl : Perl Developing, Other Books
  • bug reports : Perl Developing, Bug Reports
  • C library functions : Perl Developing, 3. Functions
  • conventions : Perl tutorial, Conventions Used in this tutorial
  • FAQ on Perl : Perl Developing, Frequently Asked Questions List
  • Javadoc format : Advanced Perl Developing, 17.1. On Code Generation
  • Perl manpages : Perl Developing, Perl Manpages
  • POD format
  • • Advanced Perl Developing, 17.1. On Code Generation
    • Perl tutorial, 4.11. Pod
    • Perl tutorial, 4.11.3. Pod Utilities
• dollar sign : (see $ (dollar sign))
• domain() (Net::SMTP) : Perl tutorial, Chapter 14, Reference: domain
• Domain property (response cookies) : Perl tutorial, 20.2.2.1. Setting cookies
• DomainName module : Learning Perl on Win32 Systems, B.4. Win32 Extensions
• domains
• • getting information on : Perl tutorial, 18.8. Using Whois to Retrieve Information from the InterNIC
  • for sockets : Perl tutorial, 17.0. Introduction
• Dominus, Mark-Jason : Perl tutorial, 4.19. Program: permute
• DOS shell window, removing : Perl tutorial, 15.17. Removing the DOS Shell Window with Windows Perl/Tk
• dot : (see (dot))
• Douady, Adrien : Advanced Perl Developing, 18.6. A Detour into Fractals
• double indexing scheme (example) : Advanced Perl Developing, 2.4.1. Data Representation
• double quotes
• • (see also " (double quotation marks))
  • Perl tutorial, 1.0. Introduction
  • Learning Perl, 2.3.2. Double-Quoted Strings
  • Perl tutorial, 4.2.2. String Interpolation
  • associative array elements and : Learning Perl, 5.4.1. The keys Function
  • backslash escape and : Learning Perl, 2.3.2. Double-Quoted Strings
  • examples of
  • • Learning Perl, 1.5.2. Asking Questions and Remembering the Result
    • Learning Perl on Win32 Systems, 1.6.2. Asking Questions and Remembering the Result
  • hash elements : Learning Perl on Win32 Systems, 5.4.1. The keys Function
  • qq() : Perl tutorial, 4.1. Specifying a List In Your Program
  • variable interpolation
  • • (see also variable interpolation)
    • Learning Perl, 2.6.4. Interpolation of Scalars into Strings
    • Perl Developing, 2.3.3.4. Interpolative context
• doubles (NVs) : Advanced Perl Developing, 20.3.1. Scalar Values
• Dowd, Sean : Perl tutorial, 14. Email Connectivity
• downloading source code
• • Perl tutorial, 2. Installing Perl
  • Perl tutorial, 2.2. How Is CPAN Organized?
  • Perl tutorial, 2.4. Getting and Installing Modules
• DProf debugger : Perl Developing, 8.1.8. Alternative Debuggers: The Perl Profiler
• dprofpp utility : Perl tutorial, 6.5. The Perl Profiler
• drawers : (see directories)
• drivelock program (example) : Perl tutorial, 7.21. Program: netlock
• du command, sorting output of : Perl tutorial, 5.16. Program: dutree
• dummyhttpd program (example) : Perl tutorial, 19.9. Debugging the Raw HTTP Exchange
• dump()
• • Perl tutorial, Chapter 5, Reference: dump
  • Perl Developing, 3.2.29. dump
  • CGI.pm module : Perl tutorial, Chapter 10, Reference: dump
  • HTML::Parser module : Perl tutorial, Chapter 17, Reference: dump
• Dump module : Advanced Perl Developing, 20.3.2.1. Inside AVs
• dump_results() (DBI) : Perl tutorial, Chapter 12, Reference: dump_results
• Dumper module : Advanced Perl Developing, 10.2.2. Data::Dumper
• dumpValue function : Advanced Perl Developing, 2.5. Pretty-Printing
• dup() (Mail::Folder) : Perl tutorial, Chapter 14, Reference: dup
• duplicate
• • list elements, extracting : Perl tutorial, 4.6. Extracting Unique Elements from a List
  • words, finding : Perl tutorial, 6.16. Detecting Duplicate Words
• dutree program (example) : Perl tutorial, 5.16. Program: dutree
• dutree_orig program (example) : Perl tutorial, 5.16. Program: dutree
• DynaLoader module
• • Perl tutorial, 8.44. DynaLoader
  • Perl Developing, 7.2.12. DynaLoader - Automatic Dynamic Loading of Perl Modules
  • Perl Developing, 7.2.21. ExtUtils::Mkbootstrap - Make a Bootstrap File for Use by DynaLoader
• dynamic allocation
• • Advanced Perl Developing, 1. Data References and Anonymous Storage
  • Advanced Perl Developing, 1.2.3. References to Anonymous Storage
  • Advanced Perl Developing, 1.7.1. Tcl
• dynamic behavior : (see run-time evaluation)
• dynamic binding : Advanced Perl Developing, 9. Tie
• • arrays : Advanced Perl Developing, 9.2. Tying Arrays
  • filehandles : Advanced Perl Developing, 9.4. Tying Filehandles
  • hashes : Advanced Perl Developing, 9.3. Tying Hashes
  • monitoring variables (example) : Advanced Perl Developing, 9.5. Example: Monitoring Variables
  • other languages and : Advanced Perl Developing, 9.6. Comparisons with Other Languages
  • scalars : Advanced Perl Developing, 9.1. Tying Scalars
• dynamic linking : Perl Developing, 7.2.12. DynaLoader - Automatic Dynamic Loading of Perl Modules
• dynamic scoping
• • Advanced Perl Developing, 3.1.2. Lexical Versus Dynamic Scoping
  • Perl tutorial, 10.13. Saving Global Values
  • Perl tutorial, 4.2.6. Declarations and Scope
  • Perl tutorial, 4.7.4. Private and Local Variables
  • Perl Developing, 2.6.8. Scoped Declarations

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