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Index: D

^D (Control-D) as eof: 24.5.2. Generating Perl in Other Languages

Control-D as eof: 24.5.2. Generating Perl in Other Languages

Control-D character: 2.6.8. Other Literal Tokens

2.6.8. Other Literal Tokens

-d (debug) command-line switch: 19.1.3. Switches

19.1.3. Switches
20. The Perl Debugger

-D (debugging) command-line switch: 19.1.3. Switches

d for digit=\d (for digit): 1.7. Regular Expressions

/d modifier: 5.2.4. The tr/// Operator (Transliteration)

/d pattern modifier: 5.2.4. The tr/// Operator (Transliteration)

-d switch, perl: 20.6. The Perl Profiler

daemons

Perl modules for: 22.1. The CPAN modules Directory
taint mode, importance of enabling for: 23.1. Handling Insecure Data

data

byte-oriented vs. character-oriented: 15. Unicode

fixed-length, functions for: 29.1. Perl Functions by Category

insecure, handling: 23.1. Handling Insecure Data

code masquerading as data: 23.3.2. Code Masquerading as Data
command and file access under reduced privileges: 23.1.3. Accessing Commands and Files Under Reduced Privileges
detecting and laundering tainted data: 23.1.1. Detecting and Laundering Tainted Data
environment, cleaning up: 23.1.2. Cleaning Up Your Environment

screen dump, providing: 32.1.13. Perl Language Extensions and Internals

data access

threads: 17.2.2. Data Access

condition variables: 17.2.2.6. Condition variables
deadlock: 17.2.2.2. Deadlock
locking methods: 17.2.2.5. Locking methods
locking subroutines: 17.2.2.3. Locking subroutines
synchronizing with lock: 17.2.2.1. Synchronizing access with lock
unlocking: 17.2.2.1. Synchronizing access with lock

DATA filehandle: 28.2. Special Variables in Alphabetical Order

data organization in Perl: 9.1.5. Common Mistakes

data structures: 9. Data Structures

22.1. The CPAN modules Directory
arrays of hashes: 9.3. Arrays of Hashes
complex, representing as scalars: 1.2.1.3. Complexities
flat, linear in Perl: 8. References
hashes of arrays: 9.2. Hashes of Arrays
hashes of functions: 9.5. Hashes of Functions
multidimensional hashes: 9.4. Hashes of Hashes
objects (see objects)
persistent, providing via tie: 14.6. Tie Modules on CPAN
records of elaborate: 9.6. More Elaborate Records
references to: 8.1. What Is a Reference?
saving: 9.7. Saving Data Structures
self-referential, container classes holding pointers to: 12.6.1. Garbage Collection with DESTROY Methods
stringifying: 9.7. Saving Data Structures

__DATA__ token: 2.6.8. Other Literal Tokens

28.2. Special Variables in Alphabetical Order

data types: 1.2.1. Variable Syntax

built-in: 2.3. Built-in Data Types
converting between C and Perl: 21.4.5. Fiddling with the Perl Stack from C
internal, Perl and C: 21.2. Internal Data Types
modules for: 32.1.1. Data Types
scalars (see scalars)
TYPE declarations in Perl: 29.2.99. my
typeglobs: 2.10. Typeglobs and Filehandles

databases

Data Base Management (see DBM files)
Perl connections to: 5. Pattern Matching
Perl modules for operating: 22.1. The CPAN modules Directory
see also DBI: 22.1. The CPAN modules Directory
tying hash variables to: 14. Tied Variables

Data::Dumper: 9.7. Saving Data Structures

32.1.13. Perl Language Extensions and Internals

32.10. Data::Dumper

datagrams: 16.5. Sockets

date function (see localtime function)

dates, Perl modules for: 22.1. The CPAN modules Directory

dates, portability of: 25.8. Dates and Times

DB module: 32.1.13. Perl Language Extensions and Internals

DB package, caller function: 29.2.8. caller

DBD (Database drivers)

Perl modules for: 22.1. The CPAN modules Directory

DB_File module: 32.1.10. DBM Interfaces

Data::Dumper module, using with: 32.10. Data::Dumper

DBI (Database Interface), Perl modules for: 22.1. The CPAN modules Directory

complex data values, storing in: 32.10. Data::Dumper
dbmclose and dbmopen functions: 29.2.21. dbmclose
deleting from: 29.2.24. delete
locking: 16.2.1. File Locking
modules for: 32.1.10. DBM Interfaces
storing complex data values in: 14.6. Tie Modules on CPAN

DBM modules, portability of: 25.7. Standard Modules

dbmclose function: 14. Tied Variables

dbmopen function: 14. Tied Variables

use declarations with: 14. Tied Variables

dbprofpp program: 20.6. The Perl Profiler

deadlock in threads: 17.2.2.2. Deadlock

deallocating memory: 8.5.2. Garbage Collection, Circular References, and Weak References

debugging: 19.1.3. Switches

20. The Perl Debugger

23.1. Handling Insecure Data

(see also taint)

backend modules for: 18.4. Compiler Backends

bug reports: 0.6.3. Bug Reports

controlling from programs: 20.1. Using the Debugger

DB module: 32.1.13. Perl Language Extensions and Internals

debug level, setting through class or instances: 12.8. Managing Class Data

debugger code, command for loading: 19.2. Environment Variables

debugger commands, Perl: 20.2. Debugger Commands

debugger customization: 20.3. Debugger Customization

options: 20.3.3. Debugger Options

debugging flags: 28.2. Special Variables in Alphabetical Order

debugger support, Perl: 20.5. Debugger Support

debugger, unattended execution: 20.4. Unattended Execution

Devel::Peek module for XS programs: 32.1.13. Perl Language Extensions and Internals

global destruction of objects other references, controlling: 19.2. Environment Variables

overloading: 13.10. Overloading Diagnostics

Perl, using C compiler -DDEBUGGING option: 12.5. Class Inheritance

turning on in tied filehandle: 14.4.1. Filehandle-Tying Methods

Unix security bugs: 23.2.1. Unix Kernel Security Bugs

decimal points, lining up: 7. Formats

declarations: 1.1. Getting Started

4. Statements and Declarations

structs: 12.7.2. Generating Classes with Class::Struct

fields with use fields pragma: 12.7.1. Field Declarations with use fields

global: 4.7. Global Declarations

global variables, lexically scoped: 4.8.3. Lexically Scoped Global Declarations: our

methods, lvalues, indicating return of: 12.7.6. New Tricks

packages: 1.2.1.4. Simplicities

4.8. Scoped Declarations
10. Packages
29.2.109. package

scoped: 4.8. Scoped Declarations

subroutines: 4.7. Global Declarations

with definitions: 6.1. Syntax

use declarations: 1.2.1.4. Simplicities

variables: 4. Statements and Declarations

4.8.1. Scoped Variable Declarations

declarative approach, regular expression programming: 5.10.3. Programmatic Patterns

declaring

formats: 7. Formats

subroutines: 29.2.167. sub

without defining: 6.1. Syntax

decomposing characters into simpler ones: 5.4.3.2. Standard Unicode properties

decompressing CPAN modules: 22.2.1. Decompressing and Unpacking CPAN Modules

decrementing variables: 1.5.4. Unary Arithmetic Operators

decryption (see encryption)

default package: 4.8. Scoped Declarations

DEFAULT pseudosignal: 16.1. Signals

defined function: 29.2.23. defined

defining subroutines: 6.2. Semantics

classes (object-oriented modules as): 11.1. Using Modules

subroutines

declarations vs.: 4.7. Global Declarations
loading from other files: 4.7. Global Declarations
loading with AUTOLOAD: 10.2. Autoloading

DEL in hexadecimal: 2.6.2. String Literals

delete function: 29.2.24. delete

tied arrays, not returning deleted value for: 24.1.5. Previous Perl Traps

deleting

all debugger actions: 20.2.6. Actions and Command Execution

array elements: 29.2.111. pop

29.2.149. shift
29.2.160. splice

breakpoints: 20.2.2. Breakpoints

characters: 29.2.11. chomp

directories: 29.2.135. rmdir

29.2.188. unlink

files: 29.2.188. unlink

found but unreplaced characters: 5.2.4. The tr/// Operator (Transliteration)

hash elements: 29.2.24. delete

pattern-matching operators and: 5.2. Pattern-Matching Operators

denial-of-service problems (patterns and regular expressions), security concerns: 23.3.2. Code Masquerading as Data

dereference-address operator (*), C language: 3.21. C Operators Missing from Perl

dereference operators, overloading: 13.3. Overloadable Operators

dereferencing: 8.1. What Is a Reference?

8.1. What Is a Reference?
8.3. Using Hard References
8.3.1. Using a Variable as a Variable Name
8.3.3. Using the Arrow Operator
array elements: 9.1.3. Access and Printing
hash values as functions: 9.5. Hashes of Functions
operator for (see arrow operator)
typeglobs: 10.1. Symbol Tables

derived classes: 12.1. Brief Refresher on Object-Oriented Lingo

methods as wrappers around base class methods: 12.5.2. Accessing Overridden Methods

descriptors (see file descriptors)

destroying threads

detach method: 17.2.1.4. The detach method
join method: 17.2.1.2. Thread destruction

destructors: 12.6. Instance Destructors

controlling: 19.2. Environment Variables
garbage collection with: 12.6.1. Garbage Collection with DESTROY Methods
shared memory and semaphore: 16.4. System V IPC

detach method: 17.2.1.4. The detach method

$dev file statistic: 29.2.165. stat

Devel::Dprof module: 20.6. The Perl Profiler

profiling subroutine execution with: 20.6. The Perl Profiler

development support, modules for: 22.1. The CPAN modules Directory

Devel::Peek module: 32.1.13. Perl Language Extensions and Internals

Devel::SelfStubber module: 32.1.17. Module Installation Support

Devel::SmallProf module: 20.6. The Perl Profiler

diagnostic messages (see error messages[semi] warning messages)

diagnostics module: 32.1.13. Perl Language Extensions and Internals

die function: 29.2.25. die

exit function versus: 29.2.35. exit
quit signal handling and: 16.1. Signals

dieLevel option (debugger): 20.3.3. Debugger Options

digits: 1.7. Regular Expressions

in names: 2.5. Names

directives (pod): 26.1.2. Pod Directives

directories

changing working: 29.2.9. chdir

closing: 29.2.17. closedir

creating: 29.2.94. mkdir

creating or removing portably: 32.1.4. Filenames, Filesystems, and File Locking

current working, getting pathname of: 32.1.4. Filenames, Filesystems, and File Locking

deleting: 29.2.135. rmdir

29.2.188. unlink

DirHandle module: 32.1.5. Filehandle, Directory Handle, and Stream I/O Utilities

file test checks on trees: 32.1.4. Filenames, Filesystems, and File Locking

file test operator: 1.5.7. Some File Test Operators

functions dealing with: 29.1. Perl Functions by Category

IO::Dir module: 32.1.5. Filehandle, Directory Handle, and Stream I/O Utilities

opendir function: 29.2.105. opendir

Perl modules for: 22.1. The CPAN modules Directory

prepending to @INC: 19.1.3. Switches

reading entries from: 29.2.121. readdir

rewinddir function: 29.2.133. rewinddir

root, redefining: 29.2.15. chroot

seekdir function: 29.2.139. seekdir

disciplines: 29.2.104. open

filehandles, setting up with binmode: 29.2.6. binmode

division (see multiplicative operators)

DNS (domain name server): 16.5. Sockets

do { }: 3.1. Terms and List Operators (Leftward)

BLOCK: 4.1. Simple Statements

29.2.26. do (block)
iterating: 4.5. Bare Blocks
terminating: 4.5. Bare Blocks

loop controls: 4.1. Simple Statements

4.5. Bare Blocks

FILE operator: 29.2.27. do (file)

loops: 24.1.1. Universal Blunders

SUBROUTINE operator: 4.1. Simple Statements

29.2.28. do (subroutine)

doc directory (CPAN), official Perl manpages: 22. CPAN

documentation

books on Perl: 0.5. Offline Documentation

bug reports: 0.6.3. Bug Reports

C library functions: 29. Functions

default system viewer, calling: 20.2.7. Miscellaneous Commands

embedded in Perl programs: 26. Plain Old Documentation

(see also pod)

modules for: 32.1.16. Documentation Support

Perl manpages: 0.4. Online Documentation

standard modules: 11. Modules

dollar sign ($) (see $)

dosish.h file: 19.1.1. #! and Quoting on Non-Unix Systems

double-ended pipe, opening with tied filehandle: 14.4.2. Creative Filehandles

double-quote context: 2.7.4. Interpolative Context

scalar variables, expanding in: 5.2.3. The s/// Operator (Substitution)

double-quoted strings, interpolation and concatenation: 1.5.2. String Operators

double quotes (") 1.2.1.1. Singularities

replacement string, use with: 5.2.3. The s/// Operator (Substitution)
strings, use in: 1.2.1.1. Singularities
translation escape processing: 5.9.2.1. When backslashes happen

down method: 17.2.3.2. Semaphores

DProf (see Devel::Dprof module)

dump function: 29.2.29. dump

Dumpvalue module: 32.1.13. Perl Language Extensions and Internals

duplicate replaced characters, eliminating: 5.2.4. The tr/// Operator (Transliteration)

DynaLoader: 21.3.2. Creating Extensions

10.2. Autoloading
32.1.17. Module Installation Support

dynamic linking: 21.3.1. XS and XSUBs

C source code from Perl: 21.3. Extending Perl (Using C from Perl)

dynamic scoping: 4.8. Scoped Declarations

4.8.1. Scoped Variable Declarations

local operator, using on global variables: 4.8.4. Dynamically Scoped Variables: local

pattern variables: 5.2. Pattern-Matching Operators

5.2.3. The s/// Operator (Substitution)

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