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Index: I

• command (CPAN.pm) : Perl tutorial, Chapter 2, Reference: i
• -i flag (ignore case)
• • Learning Perl, 7.4.2. Ignoring Case
  • Learning Perl, 7.5. Substitutions
  • Learning Perl on Win32 Systems, 7.4.2. Ignoring Case
  • Learning Perl on Win32 Systems, 7.5. Substitutions
• I<> interior sequence (pod) : Perl tutorial, 4.11.2. Interior sequences
• -I option (dprofpp) : Perl tutorial, 6.5. The Perl Profiler
• -I option (perlcc) : Perl tutorial, 3.4. The Perl Compiler
• /i pattern-matching modifier
• • Perl tutorial, 6.0. Introduction
  • Perl tutorial, 4.6.1. Pattern-Matching Operators
  • Perl tutorial, 4.6.8. Extended Regular Expressions
  • Perl Developing, 2.4. Pattern Matching
  • Perl Developing, 2.4.2. Pattern-Matching Operators
• -i switch, perl
• • Perl tutorial, 7.7. Writing a Filter
  • Learning Perl, 17.5. Variable-Length (Text) Databases
  • Perl tutorial, 3.2. Command-Line Options
  • Perl Developing, 6.1.2. Switches
  • modifying files with : Perl tutorial, 7.9. Modifying a File in Place with -i Switch
• -I switch, perl
• • Advanced Perl Developing, 6.2.1. Load Path
  • Perl tutorial, 12.7. Keeping Your Own Module Directory
  • Perl tutorial, 3.2. Command-Line Options
  • Perl Developing, 6.1.2. Switches
• I/O abstraction : Advanced Perl Developing, 20.2.1. Perl Objects
• I/O operations : Perl tutorial, 7.0. Introduction
• • buffering
  • • Perl tutorial, 7.0. Introduction
    • Perl tutorial, 7.12. Flushing Output
    • Perl tutorial, 8.0. Introduction
    • Perl tutorial, 17.3. Communicating over TCP
  • controlling for other programs : Perl tutorial, 16.8. Controlling Input and Output of Another Program
  • flushing output : Perl tutorial, 7.12. Flushing Output
  • non-blocking : Perl tutorial, 7.14. Doing Non-Blocking I/O
  • preprocessing input : Perl tutorial, 16.6. Preprocessing Input
  • random-access I/O : Perl tutorial, 8.12. Using Random-Access I/O
  • reading/writing to other programs : Perl tutorial, 16.4. Reading or Writing to Another Program
• I/O redirection : Advanced Perl Developing, 3.4.1. I/O Redirection
• Collate module
• • Perl tutorial, 8.88. I18N::Collate
  • Perl Developing, 7.2.37. I18N::Collate - Compare 8-bit Scalar Data According to the Current Locale
• ic_cookies program (example) : Perl tutorial, 19.10. Managing Cookies
• iconbitmap() (Frame widget) : Perl tutorial, 18.18.1. Toplevel Methods
• iconify() (Frame widget) : Perl tutorial, 18.18.1. Toplevel Methods
• iconmask() (Frame widget) : Perl tutorial, 18.18.1. Toplevel Methods
• iconname() (Frame widget) : Perl tutorial, 18.18.1. Toplevel Methods
• iconposition() (Frame widget) : Perl tutorial, 18.18.1. Toplevel Methods
• iconwindow() (Frame widget) : Perl tutorial, 18.18.1. Toplevel Methods
• icursor() (Entry) : Perl tutorial, 18.8.2. Entry Methods
• idempotency : Perl tutorial, 19.0. Introduction
• identifiers, package : Perl Developing, 5.1. Packages
• identify()
• • Scale widget : Perl tutorial, 18.13.1. Scale Methods
  • Scrollbar widget : Perl tutorial, 18.9.1. Scrollbar Methods
• identity, object
• • Advanced Perl Developing, 7.2.2. Unique Identity
  • Advanced Perl Developing, 11.2.6. Object Identity
• ideographic unary operators : Perl Developing, 2.5.5. Ideographic Unary Operators
• IDL (Interface Definition Language) : Advanced Perl Developing, 17.1. On Code Generation
• if statement
• • Learning Perl, 1.5.3. Adding Choices
  • Learning Perl, 4.2. The if/unless Statement
  • Learning Perl, 9.5. Expression Modifiers
  • Learning Perl on Win32 Systems, 1.6.3. Adding Choices
  • Learning Perl on Win32 Systems, 4.2. The if/unless Statement
  • Learning Perl on Win32 Systems, 9.5. Expression Modifiers
  • Perl tutorial, 4.3.1. Conditionals and Loops
  • Perl tutorial, 4.3.1.4. Modifiers
  • Perl Developing, 1.6.1.1. The if and unless statements
  • Perl Developing, 2.6.1. Simple Statements
  • Perl Developing, 2.6.3. If Statements
  • Perl Developing, 8.2.4. C Traps
  • in case structure : Perl Developing, 2.6.5. Bare Blocks and Case Structures
  • examples of
  • • Learning Perl, 1.5.9. Making It a Bit More Modular
    • Learning Perl, 1.5.17. The Final Programs
    • Learning Perl, 4.2. The if/unless Statement
    • Learning Perl, 5.4.1. The keys Function
    • Learning Perl on Win32 Systems, 1.6.17. The Final Programs
    • Learning Perl on Win32 Systems, 1.6.9. Making It a Bit More Modular
    • Learning Perl on Win32 Systems, 4.2. The if/unless Statement
    • Learning Perl on Win32 Systems, 5.4.1. The keys Function
  • not counting as looping block : Learning Perl, 9.2. The next Statement
  • unless modifier
  • • Learning Perl, 9.5. Expression Modifiers
    • Learning Perl, 10.3. A Slight Diversion: die
• If-Modified-Since header : Perl tutorial, 20.10. Mirroring Web Pages
• 'IGNORE' string : Perl Developing, 6.2.1. Signals
• IGNORE value (%SIG) : Learning Perl, 14.6. Sending and Receiving Signals
• ignore_text() (HTML::Parser) : Perl tutorial, Chapter 17, Reference: ignore_text
• ignore_unknown() (HTML::Parser) : Perl tutorial, Chapter 17, Reference: ignore_unknown
• ignoring case : (see case/capitalization)
• ihave() (Net::NNTP) : Perl tutorial, Chapter 15, Reference: ihave
• -image option (widgets) : Perl tutorial, 18.3. Common Widget Configuration Options
• image_button() (CGI.pm) : Perl tutorial, Chapter 10, Reference: image_button
• images, widgets and : Advanced Perl Developing, 14.3.1.2. Images
• imaginary numbers
• • Perl tutorial, 2.15. Using Complex Numbers
  • Perl Developing, 7.2.44. Math::Complex - Complex Numbers Package
• impedance mismatch : Advanced Perl Developing, 10.1. Persistence Issues
• implementation : Perl Developing, 5.5.7. Implementation (the "Uses" Relationship)
• implementation classes : (see tie())
• implementation inheritance : Advanced Perl Developing, 8.3.2. Implementation Inheritance
• implicit() (HTML::Parser) : Perl tutorial, Chapter 17, Reference: implicit
• implicit_tags() (HTML::Parser) : Perl tutorial, Chapter 17, Reference: implicit_tags
• import()
• • Perl Developing, 3.2.74. import
  • Perl Developing, 5.2. Modules
  • Perl Developing, 7.2.14. Env - Import Environment Variables
• import lists : Perl Developing, 7.2.15.1. Specialized import lists
• import_names() (CGI.pm) : Perl tutorial, Chapter 10, Reference: import_names
• import subroutine : Advanced Perl Developing, 6.5.1. How Do use and Exporter Work?
• import tags : Learning Perl, 19.5. Less Typing
• importing
• • environment variables : Perl Developing, 7.2.14. Env - Import Environment Variables
  • modules : Perl Developing, 7.2.15. Exporter - Default Import Method for Modules
  • from modules : Perl tutorial, 10.14. Redefining a Function
  • semantics into package : Perl Developing, 3.2.185. use
  • subroutines : Perl Developing, 2.7. Subroutines
  • symbols
  • • Advanced Perl Developing, 6.5. Importing Symbols
    • Perl tutorial, 12.0. Introduction
• in() (Win32::OLE) : Perl tutorial, Chapter 19, Reference: in
• -in option
• • grid geometry manager : Perl tutorial, 18.2.2. The grid Geometry Manager
  • pack geometry manager : Perl tutorial, 18.2.1. The pack Geometry Manager
  • place geometry manager : Perl tutorial, 18.2.3. The Place Geometry Manager
• in-memory databases : Perl Developing, 7.2.8.4. In-memory databases
• in-proc servers : Learning Perl on Win32 Systems, 19.1. Introduction to OLE Automation
• InactiveDestroy attribute (DBI) : Perl tutorial, 12.2.3. Database Handles and Statement Handles
• INADDR_ANY() (Socket)
• • Perl tutorial, 17.1. Writing a TCP Client
  • Perl tutorial, 17.14. Writing a Multi-Homed Server
  • Perl tutorial, 13.1.3. Server Connections
  • Perl tutorial, 13.1.4. Socket Module Functions
• INADDR_BROADCAST() (Socket) : Perl tutorial, 13.1.4. Socket Module Functions
• INADDR_LOOPBACK() (Socket) : Perl tutorial, 13.1.4. Socket Module Functions
• INADDR_NONE() (Socket) : Perl tutorial, 13.1.4. Socket Module Functions
• @INC array
• • Advanced Perl Developing, 6.2.1. Load Path
  • Perl tutorial, 12.7. Keeping Your Own Module Directory
  • Perl tutorial, 4.4.2. Global Special Arrays and Hashes
  • Perl Developing, 2.9.4. Global Special Arrays
  • manipulating at compile time : Perl Developing, 7.2.41. lib - Manipulate @INC at Compile-Time
  • prepending directories to : Perl Developing, 6.1.2. Switches
• %INC hash
• • Perl tutorial, 4.4.2. Global Special Arrays and Hashes
  • Perl Developing, 2.9.4. Global Special Arrays
• #include header, translating with h2ph : Perl tutorial, 12.14. Using h2ph to Translate C #include Files
• incr command (debugger) : Perl Developing, 8.1.1. Debugger Commands
• indeces of array elements : (see arrays)
• indentation, in Perl programs
• • Learning Perl, 1.4. Basic Concepts
  • Learning Perl on Win32 Systems, 1.5. Basic Concepts
• indents : (see whitespace)
• index()
• • Learning Perl, 15.1. Finding a Substring
  • Perl tutorial, Chapter 5, Reference: index
  • Perl Developing, 3.2.75. index
  • Entry widget : Perl tutorial, 18.8.2. Entry Methods
  • Listbox widget : Perl tutorial, 18.10.2. Listbox Methods
  • Menu widget : Perl tutorial, 18.15.2. Menu Methods
  • Text widget : Perl tutorial, 18.11.2. Text Methods
• indexes, text positioning : Advanced Perl Developing, 14.3.5.1. Inserting text at absolute positions
• -indicatoron option
• • Checkbutton widget : Perl tutorial, 18.5. The Checkbutton Widget
  • Menubutton widget
  • • Perl tutorial, 18.14. The Menubutton Widget
    • Perl tutorial, 18.14.1. Menu Item Options
  • Optionmenu widget : Perl tutorial, 18.16. The Optionmenu Widget
  • Radiobutton widget : Perl tutorial, 18.6. The Radiobutton Widget
• indices of hash elements : Perl tutorial, 5.0. Introduction
• indirect filehandles
• • Perl tutorial, 7.0. Introduction
  • Perl tutorial, 7.16. Storing Filehandles in Variables
  • Learning Perl, 12.2. Globbing
• indirect notation
• • Advanced Perl Developing, 7.2.5.1. Detour: The indirect notation
  • Perl tutorial, 13.0. Introduction
  • Perl Developing, 5.3.6. Method Invocation
  • Perl Developing, 5.5.1. Object-Oriented Scaling Tips
• indirection, multiple levels of : Advanced Perl Developing, 1.2.4. Dereferencing Multiple Levels of Indirection
• inequality : (see equality operators; relational operators)
• INET module : Advanced Perl Developing, 12.2.1. Receiver
• inet_aton() (Socket) : Perl tutorial, Chapter 13, Reference: inet_aton
• inet_ntoa() (Socket)
• • Perl tutorial, 17.0. Introduction
  • Perl tutorial, Chapter 13, Reference: inet_ntoa
• infinite loops
• • Learning Perl, 9.3. The redo Statement
  • Perl Developing, 2.6.4.2. For loops
• infix dereference (arrow) operator : (see - (hyphen), -> (arrow) operator)
• Info() (Win32::Console) : Perl tutorial, Chapter 19, Reference: Info
• Ing-Simmons, Nick : Advanced Perl Developing, 14.1. Introduction to GUIs, Tk, and Perl/Tk
• inheritance
• • Advanced Perl Developing, 7.1. OO: An Introduction
  • Advanced Perl Developing, 7.2.6. The Need for Inheritance
  • Advanced Perl Developing, 8.3. On Inheritance
  • Advanced Perl Developing, 11.2.5. Inheritance and Database Mapping
  • Perl tutorial, 13.0. Introduction
  • Perl tutorial, 13.9. Writing an Inheritable Class
  • Perl tutorial, 13.12. Solving the Data Inheritance Problem
  • Perl Developing, 5.3.1. Brief Refresher on Object-Oriented Developing
  • Perl Developing, 5.3.4. A Class Is Simply a Package
  • Perl Developing, 5.5.1. Object-Oriented Scaling Tips
  • Perl Developing, 5.5.10. Inheriting a Constructor
  • hierarchy, searching : Advanced Perl Developing, 7.3.1. Searching for Methods
  • instance variable : Perl Developing, 5.5.4. Instance Variable Inheritance
• init program : Perl Developing, 3.2.56. getppid
• initial caps : (see case/capitalization)
• initializers : (see constructors)
• initializing
• • arrays and hashes
  • • Perl tutorial, 4.1. Specifying a List In Your Program
    • Perl tutorial, 5.0. Introduction
    • Perl Developing, 2.5.7. Multiplicative Operators
  • C library : Advanced Perl Developing, 18.1. Writing an Extension: Overview
  • hash variables : Perl Developing, 2.3.5. Hashes (Associative Arrays)
  • modules/packages
  • • Advanced Perl Developing, 6.3. Package Initialization and Destruction
    • Perl tutorial, 12.6. Automating Module Clean-Up
  • NNTP clients : Perl tutorial, 15.2.1. Initializing the NNTP Client
  • sockets : Perl tutorial, 13.1.1. Initializing a Socket
• InitiateSystemShutdown module : Learning Perl on Win32 Systems, B.4. Win32 Extensions
• $ino file statistic : Perl Developing, 3.2.159. stat
• inodes : Perl tutorial, 9.0. Introduction
• inplace editing : Learning Perl, 17.5. Variable-Length (Text) Databases
• $INPLACE_EDIT ($^I) variable
• • Learning Perl, 17.5. Variable-Length (Text) Databases
  • Perl tutorial, 4.4.1. Global Special Variables
  • Perl Developing, 2.9.3. Global Special Variables
  • Perl Developing, 7.2.13. English - Use English or awk Names for Punctuation Variables
• input
• • (see also filehandles)
  • Perl Developing, 1.4. Filehandles
  • checking file descriptors for : Perl Developing, 3.2.135. select (ready file descriptors)
  • checking for waiting : Perl tutorial, 15.9. Checking for Waiting Input
  • comma-separated, parsing : Perl tutorial, 1.15. Parsing Comma-Separated Data
  • controlling for other programs : Perl tutorial, 16.8. Controlling Input and Output of Another Program
  • editing : Perl tutorial, 15.11. Editing Input
  • executing shell commands from (CGI) : Perl tutorial, 19.6. Executing Commands Without Shell Escapes
  • expanding variables in : Perl tutorial, 1.8. Expanding Variables in User Input
  • Expect-controlled programs and : Perl tutorial, 15.13. Controlling Another Program with Expect
  • extracting variable-length fields : Perl tutorial, 8.9. Processing Variable-Length Text Fields
  • functions for
  • • (see also $ variables, $_ ($ARG) variable; output)
    • Perl tutorial, 4.4.1. Global Special Variables
    • Perl tutorial, 5.1. Perl Functions by Category
  • from HTML forms : (see CGI programs)
  • operators : Perl Developing, 2.3.7. Input Operators
  • parsing command-line arguments : Perl tutorial, 15.1. Parsing Program Arguments
  • pipes : Perl Developing, 6.2.2. Pipes
  • preprocessing : Perl tutorial, 16.6. Preprocessing Input
  • random-access I/O : Perl tutorial, 8.12. Using Random-Access I/O
  • reading
  • • in awk : Perl Developing, 8.2.3. Awk Traps
    • from keyboard : Perl tutorial, 15.6. Reading from the Keyboard
    • from other programs : Perl tutorial, 16.4. Reading or Writing to Another Program
    • passwords : Perl tutorial, 15.10. Reading Passwords
    • records with pattern separators : Perl tutorial, 6.7. Reading Records with a Pattern Separator
    • STDERR from programs : Perl tutorial, 16.7. Reading STDERR from a Program
  • record separator : (see $ variables, $/ variable)
  • single-character buffered : Perl Developing, 3.2.43. getc
  • specification parser
  • • Advanced Perl Developing, 17.2. Jeeves Example
    • Advanced Perl Developing, 17.5. Sample Specification Parser
  • unbuffered
  • • Advanced Perl Developing, 17.3.1. Advantages of This Architecture
    • Perl Developing, 3.2.43. getc
    • Perl Developing, 7.2.49.1. Classes
• <INPUT> tags (HTML) : Perl tutorial, 9.1. A Typical CGI Interaction
• Input() (Win32::Console) : Perl tutorial, Chapter 19, Reference: Input
• $INPUT_LINE_NUMBER ($.) variable
• • Perl tutorial, 4.4.1. Global Special Variables
  • Perl Developing, 2.9.3. Global Special Variables
  • Perl Developing, 7.2.13. English - Use English or awk Names for Punctuation Variables
• $INPUT_RECORD_SEPARATOR ($/) variable
• • Perl tutorial, 8.0. Introduction
  • Learning Perl, 6.1. Input from STDIN
  • Learning Perl, 14.2. Using Backquotes
  • Learning Perl on Win32 Systems, 6.1. Input from STDIN
  • Perl tutorial, 4.4.1. Global Special Variables
  • Perl Developing, 2.9.3. Global Special Variables
  • Perl Developing, 6.1.2. Switches
  • Perl Developing, 7.2.13. English - Use English or awk Names for Punctuation Variables
• InputChar() (Win32::Console) : Perl tutorial, Chapter 19, Reference: InputChar
• InputCP() (Win32::Console) : Perl tutorial, Chapter 19, Reference: InputCP
• insert()
• • Entry widget : Perl tutorial, 18.8.2. Entry Methods
  • Listbox widget : Perl tutorial, 18.10.2. Listbox Methods
  • Menu widget : Perl tutorial, 18.15.2. Menu Methods
  • Text widget : Perl tutorial, 18.11.2. Text Methods
• insert index
• • Entry widget : Perl tutorial, 18.8.1. Text Indexes
  • Text widget : Perl tutorial, 18.11.1. Text Indexes and Modifiers
• insert_element() (HTML::Parser) : Perl tutorial, Chapter 17, Reference: insert_element
• -insertbackground option (widgets) : Perl tutorial, 18.3. Common Widget Configuration Options
• -insertborderwidth option (widgets) : Perl tutorial, 18.3. Common Widget Configuration Options
• -insertofftime option (widgets) : Perl tutorial, 18.3. Common Widget Configuration Options
• -insertontime option (widgets) : Perl tutorial, 18.3. Common Widget Configuration Options
• -insertwidth option (widgets) : Perl tutorial, 18.3. Common Widget Configuration Options
• install() : Perl Developing, 7.2.16. ExtUtils::Install - Install Files from Here to There
• install command (CPAN.pm) : Perl tutorial, Chapter 2, Reference: install
• Install module : Perl Developing, 7.2.16. ExtUtils::Install - Install Files from Here to There
• installing
• • mod_perl module : Perl tutorial, 11.2. Installing mod_perl
  • modules from CPAN : Perl tutorial, 12.17. Building and Installing a CPAN Module
  • Perl documentation : Perl tutorial, 2.5.1. Installing the Documentation
  • Perl source code and modules
  • • Perl tutorial, 2.3. Installing Perl
    • Perl tutorial, 2.4.2. Module Installation
    • Perl Developing, 7.2.16. ExtUtils::Install - Install Files from Here to There
    • Perl Developing, 8.5. Distribution and Installation
  • signal handlers : Perl tutorial, 16.15. Installing a Signal Handler
• instance data
• • Perl tutorial, 13.0. Introduction
  • Perl tutorial, 13.3. Managing Instance Data
  • circular data structures : Perl tutorial, 13.13. Coping with Circular Data Structures
  • inheritance and : Perl tutorial, 13.12. Solving the Data Inheritance Problem
• instance methods
• • Advanced Perl Developing, 7.2.3. Behavior
  • Perl tutorial, 13.0. Introduction
  • Perl tutorial, 7.4. Object Syntax
  • Perl Developing, 5.3.1. Brief Refresher on Object-Oriented Developing
  • Perl Developing, 5.3.5.2. Instance methods
  • arrow notation for : Advanced Perl Developing, 7.2.4. The Need for Polymorphism
• instance variables : Perl Developing, 5.5.2. Instance Variables
• instances
• • (see also objects)
  • Perl Developing, 5.3.1. Brief Refresher on Object-Oriented Developing
• int()
• • Perl tutorial, 2.3. Rounding Floating-Point Numbers
  • Learning Perl, 10.5. The -x File Tests
  • Learning Perl on Win32 Systems, 10.6. The -x File Tests
  • Perl tutorial, Chapter 5, Reference: int
  • Perl Developing, 3.2.76. int
• INT signal : Advanced Perl Developing, 4.2.2. Signal Handlers
• integer method : Perl Developing, 7.2.38. integer - Do Arithmetic in Integer Instead of Double
• integer module
• • Perl tutorial, 8.89. integer
  • Perl Developing, 2.6.9. Pragmas
• integer values (IVs)
• • Advanced Perl Developing, 20.3.1.3. SVs and object pointers
  • Advanced Perl Developing, 20.3.1. Scalar Values
• integers
• • (see numbers)
  • Learning Perl, 2.2.1. All Numbers Use the Same Format Internally
  • Learning Perl, 2.2.3. Integer Literals
  • Learning Perl on Win32 Systems, 2.2.1. All Numbers Use the Same Format Internally
  • Learning Perl on Win32 Systems, 2.2.3. Integer Literals
  • Perl Developing, 3.2.76. int
  • Perl Developing, 7.2.38. integer - Do Arithmetic in Integer Instead of Double
  • Perl Developing, 7.2.43. Math::BigInt - Arbitrary-Length Integer Math Package
  • strings as vectors of : Perl Developing, 3.2.188. vec
• interactivity, testing for : Perl tutorial, 15.2. Testing Whether a Program Is Running Interactively
• Interface Definition Language (IDL) : Advanced Perl Developing, 17.1. On Code Generation
• interface functions : Advanced Perl Developing, 7.2.3. Behavior
• interface inheritance : Advanced Perl Developing, 8.3.3. Interface Inheritance
• interfaces : (see user interfaces)
• interior sequences (pod) : Perl tutorial, 4.11.2. Interior sequences
• Internet domain sockets : Perl tutorial, 17.0. Introduction
• Internet module : Learning Perl on Win32 Systems, B.4. Win32 Extensions
• Internet services : Perl tutorial, 18.0. Introduction
• • DNS lookups : Perl tutorial, 18.1. Simple DNS Lookups
  • expn and vrfy programs (examples) : Perl tutorial, 18.9. Program: expn and vrfy
  • FTP clients : Perl tutorial, 18.2. Being an FTP Client
  • mail : (see email)
  • pinging machines : Perl tutorial, 18.7. Pinging a Machine
  • simulating telnet connection : Perl tutorial, 18.6. Simulating Telnet from a Program
  • Usenet news : Perl tutorial, 18.4. Reading and Posting Usenet News Messages
  • whois service : Perl tutorial, 18.8. Using Whois to Retrieve Information from the InterNIC
• Internet TCP clients/servers : Perl Developing, 6.2.4.1. Internet TCP clients and servers
• Internet-domain sockets : Perl tutorial, 13. Sockets
• interpolating : Perl Developing, 2.3.3.4. Interpolative context
• • array variables : Perl Developing, 2.3.2.5. Interpolating array values
  • scalar values : Perl Developing, 2.3.2.2. String literals
• interpreted languages
• • Learning Perl, 1.4. Basic Concepts
  • Learning Perl on Win32 Systems, 1.1. History of Perl
  • Learning Perl on Win32 Systems, 1.5. Basic Concepts
• interpreter, Perl
• • (see also command interpreters)
  • Advanced Perl Developing, 20.2.1.1. Multiple interpreters
  • Perl tutorial, 3. The Perl Interpreter
  • command processing : Perl tutorial, 3.1. Command Processing
  • command-line options : Perl tutorial, 3.2. Command-Line Options
• interpreting bytes in memory : Learning Perl on Win32 Systems, 16.2. Packing and Unpacking Binary Data
• interprocess communication (IPC)
• • Learning Perl, 14.6. Sending and Receiving Signals
  • Perl tutorial, 5.1. Perl Functions by Category
  • Perl Developing, 6.2. Cooperating with Other Processes
• intersections on lists : Perl tutorial, 4.7. Finding Elements in One Array but Not Another
• introspection : (see reflection)
• inverse_select() (Mail::Folder) : Perl tutorial, Chapter 14, Reference: inverse_select
• inverting arrays and hashes : Perl Developing, 3.2.126. reverse
• inverting hashes : Perl tutorial, 5.8. Inverting a Hash
• invoke()
• • Button widget : Perl tutorial, 18.4.1. Button Methods
  • Checkbutton widget : Perl tutorial, 18.5.1. Checkbutton Methods
  • Menu widget : Perl tutorial, 18.15.2. Menu Methods
  • Radiobutton widget : Perl tutorial, 18.6.1. Radiobutton Methods
  • Win32::OLE module : Perl tutorial, Chapter 19, Reference: Invoke
• invoking/executing
• • format : Learning Perl, 11.3. Invoking a Format
  • methods : Perl Developing, 5.3.6. Method Invocation
  • other programs from Perl : Perl Developing, 3.2.167. system
  • Perl programs
  • • Perl Developing, 1.3.1. How to Do It
    • Perl Developing, 6.1. Cooperating with Command Interpreters
  • subroutines : Learning Perl, 8.2. Invoking a User Function
• IO modules : Perl tutorial, 8.90. IO
• • IO::File module
  • • Perl tutorial, 7.0. Introduction
    • Perl tutorial, 7.1. Opening a File
    • Perl tutorial, 8.91. IO::File
    • temporary files : Perl tutorial, 7.5. Creating Temporary Files
  • IO::Handle module
  • • Perl tutorial, 7.0. Introduction
    • Perl tutorial, 8.92. IO::Handle
  • IO::Pipe module : Perl tutorial, 8.93. IO::Pipe
  • IO::Pty module : Perl tutorial, 15.13. Controlling Another Program with Expect
  • IO::Seekable module
  • • Perl tutorial, 8.94. IO::Seekable
    • Perl tutorial, 8.95. IO::Select
  • IO::Select module
  • • Advanced Perl Developing, 12.3.2. Multiplexing Using select
    • Advanced Perl Developing, 12.5. IO Objects and Filehandles
    • Perl tutorial, 7.13. Reading from Many Filehandles Without Blocking
    • Perl tutorial, 16.9. Controlling the Input, Output, and Error of Another Program
  • IO::Socket module
  • • Advanced Perl Developing, 12.2. Socket API and IO::Socket
    • Learning Perl on Win32 Systems, C. Networking Clients
    • Perl tutorial, 8.96. IO::Socket
    • Perl tutorial, 13.2. The IO::Socket Module
    • closing socket after forking : Perl tutorial, 17.9. Closing a Socket After Forking
    • IO::Socket::INET class
    • • Perl tutorial, 17.1. Writing a TCP Client
      • Perl tutorial, 13.2.4. IO::Socket::INET Reference
    • IO::Socket::UNIX class : Perl tutorial, 13.2.5. IO::Socket::UNIX Reference
    • UDP clients and servers : Perl tutorial, 17.4. Setting Up a UDP Client
  • IO::Stty module : Perl tutorial, 15.13. Controlling Another Program with Expect
• IO objects : Advanced Perl Developing, 12.5. IO Objects and Filehandles
• ioctl()
• • Perl tutorial, 7.15. Determining the Number of Bytes to Read
  • Perl tutorial, 10.10. Returning Failure
  • Perl tutorial, 12.14. Using h2ph to Translate C #include Files
  • Perl tutorial, Chapter 5, Reference: ioctl
  • Perl Developing, 3.2.77. ioctl
• IP addresses : Advanced Perl Developing, 12.1. Networking Primer
• • determining your own : Perl tutorial, 17.8. Finding Your Own Name and Address
  • DNS lookups : Perl tutorial, 18.1. Simple DNS Lookups
  • expn and vrfy programs (examples) : Perl tutorial, 18.9. Program: expn and vrfy
  • identifying at socket ends : Perl tutorial, 17.7. Identifying the Other End of a Socket
  • multi-homed servers : Perl tutorial, 17.14. Writing a Multi-Homed Server
  • packed, converting to ASCII strings : Perl tutorial, 17.0. Introduction
• -ipadx, -ipady options
• • grid geometry manager : Perl tutorial, 18.2.2. The grid Geometry Manager
  • pack geometry manager : Perl tutorial, 18.2.1. The pack Geometry Manager
• IPC (interprocess communication)
• • Learning Perl, 14.6. Sending and Receiving Signals
  • Perl tutorial, 5.1. Perl Functions by Category
  • Perl Developing, 6.2. Cooperating with Other Processes
• IPC modules
• • Learning Perl on Win32 Systems, B.4. Win32 Extensions
  • Perl tutorial, 8.97. IPC::Msg
  • IPC::Msg module : Perl tutorial, 8.97. IPC::Msg
  • IPC::Open2 module
  • • Perl tutorial, 16.8. Controlling Input and Output of Another Program
    • Perl tutorial, 8.98. IPC::Open2
    • Perl Developing, 7.2.39. IPC::Open2 - Open a Process for Both Reading and Writing
  • IPC::Open3 module
  • • Perl tutorial, 16.9. Controlling the Input, Output, and Error of Another Program
    • Perl tutorial, 8.99. IPC::Open3
    • Perl Developing, 7.2.40. IPC::Open3 - Open a Process for Reading, Writing, and Error Handling
  • IPC::Semaphore module : Perl tutorial, 8.100. IPC::Semaphore
  • IPC::Shareable : Perl tutorial, 16.12. Sharing Variables in Different Processes
  • IPC::SysV module : Perl tutorial, 8.101. IPC::SysV
• "is-a" relationship : (see inheritance)
• is_client_error() (HTTP::Status : Perl tutorial, 17.3.4. HTTP::Status
• is_empty() (HTML::Parser) : Perl tutorial, Chapter 17, Reference: is_empty
• is_error()
• • HTTP::Response module : Perl tutorial, Chapter 17, Reference: is_error
  • HTTP::Status module : Perl tutorial, 17.3.4. HTTP::Status
  • LWP::Simple module : Perl tutorial, Chapter 17, Reference: is_error
• is_fresh() (HTTP::Response) : Perl tutorial, Chapter 17, Reference: is_fresh
• is_info()
• • HTTP::Response module : Perl tutorial, Chapter 17, Reference: is_info
  • HTTP::Status module : Perl tutorial, 17.3.4. HTTP::Status
• is_inside() (HTML::Parser) : Perl tutorial, Chapter 17, Reference: is_inside
• is_protocol_supported() (LWP::UserAgent) : Perl tutorial, Chapter 17, Reference: is_protocol_supported
• is_readonly() (Mail::Folder) : Perl tutorial, Chapter 14, Reference: is_readonly
• is_redirect()
• • HTTP::Response module : Perl tutorial, Chapter 17, Reference: is_redirect
  • HTTP::Status module : Perl tutorial, 17.3.4. HTTP::Status
• is_safe() : Perl tutorial, 8.17. Testing a File for Trustworthiness
• is_server_error() (HTTP::Status : Perl tutorial, 17.3.4. HTTP::Status
• is_success()
• • HTTP::Response module : Perl tutorial, Chapter 17, Reference: is_success
  • HTTP::Status module : Perl tutorial, 17.3.4. HTTP::Status
  • LWP::Simple module : Perl tutorial, Chapter 17, Reference: is_success
• is_verysafe() : Perl tutorial, 8.17. Testing a File for Trustworthiness
• @ISA array
• • Advanced Perl Developing, 7.2.6. The Need for Inheritance
  • Perl tutorial, 13.0. Introduction
  • Perl Developing, 5.3.4. A Class Is Simply a Package
  • Perl Developing, 7.2.1. AnyDBM_File - Provide Framework for Multiple DBMs
• isa function
• • Advanced Perl Developing, 7.3. UNIVERSAL
  • Perl tutorial, 13.8. Determining Subclass Membership
• ISAP : Learning Perl on Win32 Systems, 1.3.1. ActiveState Perl for Win32
• ISAPI extensions : Learning Perl on Win32 Systems, 18.7.2. PerlIS and PerlScript
• IsClientConnected property (Response object) : Perl tutorial, 20.2.2.2. Response properties
• isindex() (CGI.pm) : Perl tutorial, Chapter 10, Reference: isindex
• IsWin95 module : Learning Perl on Win32 Systems, B.4. Win32 Extensions
• IsWinNT module : Learning Perl on Win32 Systems, B.4. Win32 Extensions
• Item() (Win32::OLE::Enum) : Perl tutorial, 19.18.3. Win32::OLE::Enum
• =item command (pod) : Perl tutorial, Chapter 4, Reference: =item
• item tags (Canvas widgets) : Perl tutorial, 18.12.2. Item Tags and IDs
• itemcget() (Canvas) : Perl tutorial, 18.12.3. Canvas Methods
• itemconfigure() (Canvas) : Perl tutorial, 18.12.3. Canvas Methods
• iterating scripts over filenames : Perl tutorial, 3.2. Command-Line Options
• iterations : (see arrays; lists; loops)
• iterators
• • Advanced Perl Developing, 4.4.2. Iterators and Streams
  • Perl tutorial, 4.4. Doing Something with Every Element in a List
• itimer routines : Perl Developing, 3.2.5. alarm
• IVs (integer values) : Advanced Perl Developing, 20.3.1.3. SVs and object pointers

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