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Index: D

• data
• • formatting with sprintf function: Formatting Data with sprintf
  • manipulating with pack and unpack functions: Manipulating Data with pack and unpack
• data-flow analysis: Security
• data structures, complex: Complex Data Structures
• databases: Simple Databases
• • Databases
  • DBI module and: Relational Database Access
  • files for, read/write access to: Fixed-length Random-access Databases
  • fixed-length random-access: Fixed-length Random-access Databases
  • hashes and: Why Use a Hash?
  • variable-length text: Variable-length (Text) Databases
• date command (Unix): The system Function
• • Variable-length (Text) Databases
  • capturing output and: Using Backquotes to Capture Output
• DBI module: Relational Database Access
• DBM files: DBM Files and DBM Hashes
• • Tied Variables
• DBM hashes: DBM Files and DBM Hashes
• • Tied Variables
• dbmclose function: Opening and Closing DBM Hashes
• dbmopen function: Opening and Closing DBM Hashes
• debugger for Perl: Debugging
• decimal integer conversion: Formatted Output with printf
• decimals
• • formatting for output: Transforming Items from a List with map
  • rounding
  • • printf function and: Formatted Output with printf
    • sprintf function and: Using sprintf with "Money Numbers"
• default variable ($_): Perl's Favorite Default: $_
• • =~ binding operator and: The Binding Operator, =~
  • input stored in: Input from Standard Input
• defaults: Is Perl Easy or Hard?
• • output filehandle: Changing the Default Output Filehandle
• defined function: The defined Function
• • Changing Ownership
• delete function: The delete Function
• delimiters
• • changing for s/// substitution operator: Different Delimiters
  • in lists: The qw Shortcut
  • nonpaired: Matches with m//
• diagnostic messages, from diamond operator\\: Input from the Diamond Operator
• diagnostics pragma: The diagnostics Pragma
• diamond operator (see diamond operator)
• diamond operator (): Input from the Diamond Operator
• • @ARGV array and: The Invocation Arguments
  • in-place editing of text files and: Variable-length (Text) Databases
• die function: Fatal Errors with die
• digits, \\\\d shortcut for: Character Class Shortcuts
• directories: Links and Files
• • making/removing: Making and Removing Directories
  • manipulating: Directory Operations
• directory handles: Directory Handles
• dirname function, File::Basename module and: The File::Basename Module
• division operator (/): Numeric Operators
• documentation for Perl: Are There Any Other Kinds of Support?
• • Further Documentation
  • embedding: Embedded Documentation
• dollar sign ($)
• • in regular text: Interpolation of Scalar Variables into Strings
  • in scalar variable names: Scalar Variables
  • indicating end of string: Anchors
  • preceding hash names: Hash Element Access
• domain-name databases: Direct System Database Access
• dot (.)
• • as wildcard character: About Metacharacters
  • • /s modifier and: Matching Any Character with /s
  • indicating current directory: Links and Files
• dot and slash (./): Simple Program
• dot-dot (..) indicating parent directory: Links and Files
• double-precision floating-point values: All Numbers Are the Same Format Internally
• double-quote interpolation (see variable interpolation)
• double-quoted string literals: Double-Quoted String Literals
• • arrays, interpolating into: Interpolating Arrays into Strings
  • hash elements, interpolating into: Hash Element Interpolation
  • scalar variables, interpolating into: Interpolation of Scalar Variables into Strings
  • variable interpolation and: Double-Quoted String Literals
• double quotes ("")
• • arrays and: Output to Standard Output
  • enclosing strings: Double-Quoted String Literals
  • omitting from hash keys: Unquoted Hash Keys
• downloading pattern test program: Exercises
• dynamic loading: Dynamic Loading