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Index: A

• .al filename extensions: Autoloading
• -a (autosplit) command-line switch: Switches
• -A (access age) file test operator: Named Unary and File Test Operators
• \A (string boundary): Beginnings: The \A and ^ Assertions
• Control-A: The s/// Operator (Substitution)
• abbreviations, text: String Processing, Language Text Processing, Parsing, and Searching
• abs (absolute value) function: abs
• abstraction: Packages
• • in object-oriented developing: Method Invocation
• accept function: accept
• access checks, setting in constructor: Using Closures for Private Objects
• access time, file: stat
• • utime
• accessing
• • array of hashes: Access and Printing of an Array of Hashes
  • elements, tied arrays: Array-Tying Methods
  • hashes of arrays: Access and Printing of a Hash of Arrays
  • multidimensional arrays: Access and Printing
  • multidimensional hashes: Access and Printing of a Hash of Hashes
  • overridden methods: Accessing Overridden Methods
  • records of elaborate data structures: Composition, Access, and Printing of More Elaborate Records
  • slices of multidimensional arrays: Slices
• accessor methods: Initializers
• • class data methods, working like: Managing Class Data
  • creating: Managing Instance Data
  • generating with autoloading: Generating Accessors with Autoloading
  • generating with closures: Generating Accessors with Closures
  • pseudohashes and: Field Declarations with use fields
• $ACCUMULATOR: Special Variables in Alphabetical Order
• actions (debugger)
• • command execution, specifying from debugger: Actions and Command Execution
  • listing all: Breakpoints
• ActiveState Perl distribution
• • installing on Windows systems: #! and Quoting on Non-Unix Systems
  • Microsoft-only modules: Microsoft-Related Modules
  • PPM (Perl Package Manager): Using CPAN Modules
• adding additional array elements: unshift
• addition: Some Binary Arithmetic Operators
• • overloaded plus (+) operator: Overload Handlers
• additive operators: Additive Operators
• address-of operator (in C): Operators Missing from Perl
• addresses
• • C language, Perl vs.: Traps
  • getting from hostnames: getnetbyname
  • network, getting from hostnames: gethostbyname
  • network, translating to names: gethostbyaddr
  • • getnetbyaddr
  • packed socket: getsockname
  • reused, displaying contents of: Debugger Options
  • socket names as: bind
• alarm function: alarm
• • pattern match, timing out: Code Masquerading as Data
• alert (bell): String Literals
• • Perl modules for: The CPAN modules Directory
• • for characters: Specific Characters
  • debugger command for: Miscellaneous Commands
  • in for/foreach loops
  • • searching and replacing elements in arrays: Modifying strings en passant
  • for/foreach loops, creating with: Case Structures
  • symbol table entries: Name Lookups
  • • Typeglobs and Filehandles
  • symbol table key, assignment to typeglob: Symbol Tables
• aliasing, in foreach loops: foreach Loops
• ALRM signal: Timing Out Slow Operations
• alternation: The Regular Expression Bestiary
• • character classes and: Custom Character Classes
  • interior, limiting scope of: Clustering
  • match one or the other (...|...): Metasymbol Tables
  • in patterns: Alternation
  • precedence, pattern matching: The Little Engine That /Could(n't)?/
• American Standard Code for Information Interchange (see ASCII)
• anchors: Nailing Things Down
• • Positions
• and (&) bitwise operator: Bitwise Operators
• and (&&) logical operator: Logical Operators
• • C-Style Logical (Short-Circuit) Operators
  • Logical and, or, not, and xor
  • precedence, and operator vs. &&: Syntactic Snafus with Indirect Objects
• and operator: Developing with Style
• angle brackets (see right and left angle brackets)
• angle operator: Line Input (Angle) Operator
• • Switches
  • Frequently Ignored Advice
  • reading filehandle from: Filehandle-Tying Methods
• • array composer: The anonymous array composer
  • arrays
  • • hash of, creating: Composition of a Hash of Arrays
    • two-dimensional array slice: Slices
  • hash composer: The anonymous hash composer
  • hashes
  • • adding to multidimensional hashes: Composition of a Hash of Hashes
    • array of, creating: Composition of an Array of Hashes
    • data structue for objects: Object Construction
  • pipes: Anonymous Pipes
  • referents: What Is a Reference?
  • subroutine composer: The anonymous subroutine composer
  • subroutines: Subroutines
  • • giving names at run time: Symbol Tables
• AnyDBM_File module: DBM Interfaces
• Apache web server: Embedding Perl (Using Perl from C)
• • CGI::Apache module: World Wide Web
  • mod_perl extension: Executing Your Code
  • Perl modules for: The CPAN modules Directory
• appending
• • elements to arrays: Growing Your Own
  • • push
  • members to existing hash: Generation of an Array of Hashes
• arctangents: atan2
• $ARG: Special Variables in Alphabetical Order
• • (see also parameters)
  • formal: Special Variables in Alphabetical Order
• @ARGV array: Line Input (Angle) Operator
• • Special Variables in Alphabetical Order
• ARGV filehandle: Special Variables in Alphabetical Order
• $ARGV variable: Special Variables in Alphabetical Order
• ARGVOUT filehandle: Special Variables in Alphabetical Order
• arithmetic, overloaded objects and: Overload Handlers
• arithmetic operators: Ideographic Unary Operators
• • binary arithmetic operators: Some Binary Arithmetic Operators
  • order of evaluation: Some Binary Arithmetic Operators
  • overloading: Overloadable Operators
• arity: Unary and Binary Operators
• • highest to lowest, listing of: Unary and Binary Operators
• array context (see list context)
• arrayDepth option (debugger): Debugger Options
• arrays: Variable Syntax
• • Pluralities
  • Built-in Data Types
  • (see also lists)
  • @_ arrays: Semantics
  • • copying values to my list: Tricks with Parameter Lists
  • anonymous, objects implemented as: Field Declarations with use fields
  • • use fields pragma, overcoming problems with: Field Declarations with use fields
  • anonymous, references to: The anonymous array composer
  • appending elements to: push
  • associative (see hashes)
  • AV (array value) typedef in C, corresponding to: Internal Data Types
  • deleting elements of: shift
  • • splice
  • elements, giving temporary values to: local
  • exists function and: exists
  • first element of: Special Variables in Alphabetical Order
  • of hashes: Arrays of Hashes
  • • accessing and printing: Access and Printing of an Array of Hashes
    • generating: Generation of an Array of Hashes
  • hashes of: Hashes of Arrays
  • initializing with x operator: Multiplicative Operators
  • last element of: Array Length
  • length of: Array Length
  • list values vs.: List Values and Arrays
  • lists and: List Values and Arrays
  • multidimensional: Complexities
  • • Arrays of Arrays
  • names for: Variables
  • negative subscripts, counting from end of array: Previous Perl Traps
  • nested: Arrays of Arrays
  • • two-dimensional arrays, creating and accessing: Creating and Accessing a Two-Dimensional Array
  • output style, changing in debugger: Debugger Options
  • parsing text into: String Processing, Language Text Processing, Parsing, and Searching
  • passing by reference into or out of functions: Passing References
  • performance and: Time Efficiency
  • pop function and: pop
  • prepending elements to: unshift
  • processing, functions for: Perl Functions by Category
  • references to: What Is a Reference?
  • replacing/removing elements: splice
  • s/// (substitution) operator and: Modifying strings en passant
  • subscript separator (see $[semi] variable)
  • taint in: Handling Insecure Data
  • tied, delete function and: Previous Perl Traps
  • tying: Tying Arrays
  • • methods for: Array-Tying Methods
    • notational convenience: Notational Convenience
    • Tie::Array module: Convenient Classes
  • variables of: Interpolating Array Values
• arrow (->) operator: Using the Arrow Operator
• • Method Invocation Using the Arrow Operator
  • The Arrow Operator
• artificial languages: Natural and Artificial Languages
• ASCII: Atoms
• • converting to characters: chr
  • converting to Unicode: Effects of Character Semantics
  • values for characters: ord
• ASP, Perl modules for: The CPAN modules Directory
• assertions
• • defining your own: Defining Your Own Assertions
  • lookaround assertions: Lookaround Assertions
  • precedence, pattern matching: The Little Engine That /Could(n't)?/
• assertions (in matching)
• • \b and \B (word and non word boundary): Boundaries: The \b and \B Assertions
  • positional, \z, \Z, and $ assertions: Endings: The \z, \Z, and $ Assertions
• assertions (in patterns): The Regular Expression Bestiary
• • Metasymbol Tables
  • character classes and: Custom Character Classes
  • \G positional assertion: The m// Operator (Matching)
  • positional: Positions
  • • \A and ^ assertions (string boundary): Beginnings: The \A and ^ Assertions
• assigning to lists: List Assignment
• assignment
• • to conditional operator: Conditional Operator
  • elements, two-dimsional arrays: Growing Your Own
  • of tied variables: Scalar-Tying Methods
  • tied array element: Array-Tying Methods
• assignment operators: Assignment Operators
• • Built-in Data Types
  • Assignment Operators
  • overloading: Overloadable Operators
  • • The Copy Constructor (=)
    • (see also copy constructor)
  • precedence, Perl versions, differences in: Previous Perl Traps
  • values, returning: Assignment Operators
• associative arrays (see also hashes)
• • dbmopen
• • Unary and Binary Operators
  • Relational Operators
• astronomy, Perl modules for: The CPAN modules Directory
• async function: Thread creation
• atan function: atan2
• $atime file statistic: stat
• atoms: The Little Engine That /Could(n't)?/
• • precedence, pattern matching: The Little Engine That /Could(n't)?/
• attributes: Subroutine Attributes
• • Initializers
  • attributes module: Perl Language Extensions and Internals
  • class: my
  • class, storing state for: Managing Class Data
  • files, test operators for: Some File Test Operators
  • locked and method, using with threads: New Tricks
  • locked, subroutines: The locked attribute
  • lvalue, subroutines: New Tricks
  • objects, hashes of: Complexities
  • subclass, overriding superclass ancestor: Managing Instance Data
  • subroutines: Subroutine Attributes
  • • names, syntax for: The locked and method Attributes
  • variable interpolation and: our
• attrs module (obsolete): Perl Language Extensions and Internals
• audio, Perl modules for: The CPAN modules Directory
• authentication, Perl modules for: The CPAN modules Directory
• • Authentication, Security, and Encryption
• authorization, Perl modules for: The CPAN modules Directory
• autodecrement (--) operator: Unary Arithmetic Operators
• • Autoincrement and Autodecrement
  • magical: Overloadable Operators
• autoflushing buffers: Special Variables in Alphabetical Order
• autogeneration, overloading: Overloadable Operators
• • autoincrement and autodecrement: Overloadable Operators
  • preventing: When an Overload Handler Is Missing (nomethod and fallback)
• autoincrement (++) operator: Unary Arithmetic Operators
• • Autoincrement and Autodecrement
  • magical: Autoincrement and Autodecrement
  • • Overloadable Operators
• AUTOLOAD method: Method Autoloading
• AUTOLOAD subroutine: Autoloading
• • goto
  • Method Autoloading
• AutoLoader module: Autoloading
• • Module Installation Support
• autoloading
• • generating accessors with: Generating Accessors with Autoloading
• automatic, line-end processing: Switches
• autosplit mode: Switches
• AutoSplit module: Autoloading
• • Module Installation Support
  • portability of: Files and Filesystems
• autosplitting: Autoloading
• AutoTrace option (debugger): Debugger Options
• autouse module: Module Installation Support
• autouse pragma: use autouse
• autovivification: exists
• • of filehandles: open
  • typeglobs: Filehandle-Tying Methods
• AV (internal array value): Internal Data Types
• awk: Regular Expressions
• • converting to/from Perl: Hashes

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