Index

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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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