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Index: D

d (delete option of tr) : 15.5. Transliteration

\d, in regular expressions : 7.3.1. Single-Character Patterns

-d operator : 10.5. The -x File Tests

dangling else, and impossibility of : 4.2. The if/unless Statement

database management, using the DBM library : 17.1. DBM Databases and DBM Hashes

databases

17.4. Fixed-Length Random Access Databases

17.5. Variable-Length ( Text) Databases

date command, examples of

A.13. Chapter 14, Process Management

1.4. Basic Concepts

14.1. Using system and exec

DBM array : 17.1. DBM Databases and DBM Hashes

DBM files : 1.5.16. Maintaining a Last-Good-Guess Database

DBM library : 17.1. DBM Databases and DBM Hashes

dbmclose( ) operator

1.5.17. The Final Programs

17.2. Opening and Closing DBM Hashes

dbmopen( ) operator : 17.2. Opening and Closing DBM Hashes

examples of

A.16. Chapter 17, User Database Manipulation

1.5.16. Maintaining a Last-Good-Guess Database

1.5.17. The Final Programs

debugger : D.2. The Debugger

decimal points, in floating-point numbers : 2.2.2. Float Literals

default filehandle : 10.4. Using Filehandles

default values, implemented with || operator : 1.5.9. Making It a Bit More Modular

DEFAULT, as special value for %SIG : 14.6. Sending and Receiving Signals

defensive programming : 15.4. Advanced Sorting

defining a format : 11.2. Defining a Format

Delete as interrupt signal : 14.6. Sending and Receiving Signals

delete function : 5.4.4. The delete Function

delete( ) operator, example of : 17.3. Using a DBM Hash

deleting characters : 15.5. Transliteration

delimiters, for tr : 15.5. Transliteration

diamond operator (<>) : 6.2. Input from the Diamond Operator

examples of

A.7. Chapter 8, Functions

A.9. Chapter 10, Filehandles and File Tests

A.14. Chapter 15, Other Data Transformation

A.16. Chapter 17, User Database Manipulation

diamond operator (<\>) : 17.5. Variable-Length ( Text) Databases

examples of : 7.2. Simple Uses of Regular Expressions

die( ) operator

1.5.13. Many Secret Word Files in the Current Directory

10.3. A Slight Diversion: die

examples of

A.11. Chapter 12, Directory Access

13.3.2. Creating Hard and Soft Links with Perl

directories, renaming files into : 13.2. Renaming a File

directory handles : 12.3. Directory Handles

division, operators for : 2.4.1. Operators for Numbers

double-quote interpolation : (see variable interpolation)

double-quoted strings : 2.3.2. Double-Quoted Strings

associative array elements and : 5.4.1. The keys Function

backslash escape and : 2.3.2. Double-Quoted Strings

example of : 1.5.2. Asking Questions and Remembering the Result

variable interpolation and : 2.6.4. Interpolation of Scalars into Strings

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