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Index: D

• (delete option of tr) : Transliteration
• d, in regular expressions : Single-Character Patterns
• -d operator : The -x File Tests
• dangling else, and impossibility of : The if/unless Statement
• database management, using the DBM library : DBM Databases and DBM Hashes
• databases
• • Fixed-Length Random Access Databases
  • Variable-Length ( Text) Databases
• date command, examples of
• • Process Management
  • Basic Concepts
  • Using system and exec
• DBM array : DBM Databases and DBM Hashes
• DBM files : Maintaining a Last-Good-Guess Database
• DBM library : DBM Databases and DBM Hashes
• dbmclose( ) operator
• • The Final Programs
  • Opening and Closing DBM Hashes
• dbmopen( ) operator : Opening and Closing DBM Hashes
• • examples of
  • • User Database Manipulation
    • Maintaining a Last-Good-Guess Database
    • The Final Programs
• debugger : The Debugger
• decimal points, in floating-point numbers : Float Literals
• default filehandle : Using Filehandles
• default values, implemented with || operator : Making It a Bit More Modular
• DEFAULT, as special value for %SIG : Sending and Receiving Signals
• defensive developing : Advanced Sorting
• defining a format : Defining a Format
• Delete as interrupt signal : Sending and Receiving Signals
• delete function : The delete Function
• delete( ) operator, example of : Using a DBM Hash
• deleting characters : Transliteration
• delimiters, for tr : Transliteration
• diamond operator (<>) : Input from the Diamond Operator
• • examples of
  • • Functions
    • Filehandles and File Tests
    • Other Data Transformation
    • User Database Manipulation
• diamond operator (<\>) : Variable-Length ( Text) Databases
• • examples of : Simple Uses of Regular Expressions
• die( ) operator
• • Many Secret Word Files in the Current Directory
  • Slight Diversion: die
  • examples of
  • • Directory Access
    • Creating Hard and Soft Links with Perl
• directories, renaming files into : Renaming a File
• directory handles : Directory Handles
• division, operators for : Operators for Numbers
• double-quote interpolation : (see variable interpolation)
• double-quoted strings : Double-Quoted Strings
• • associative array elements and : The keys Function
  • backslash escape and : Double-Quoted Strings
  • example of : Asking Questions and Remembering the Result
  • variable interpolation and : Interpolation of Scalars into Strings

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