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Index: H
- h command (CPAN.pm) : Perl in a Nutshell, Chapter 2, Reference: h
- h command (debugger)
- Perl in a Nutshell, Chapter 6, Reference: h
- Programming Perl, 8.1.1. Debugger Commands
- H command (debugger)
- Perl in a Nutshell, Chapter 6, Reference: H
- Programming Perl, 8.1.1. Debugger Commands
- -h option (perl)
- Perl in a Nutshell, 3.2. Command-Line Options
- Programming Perl, 6.1.2. Switches
- -h option (perlbug) : Perl in a Nutshell, 6.6. The perlbug Program
- h2ph tool : Perl Cookbook, 12.14. Using h2ph to Translate C #include Files
- h2xs tool
- (see XS tool)
- Perl Cookbook, 12.8. Preparing a Module for Distribution
- Perl Cookbook, 12.15. Using h2xs to Make a Module with C Code
- handles
- (see directory handles)
- (see filehandles)
- handling
- exceptions : (see exceptions)
- multiple clients : Advanced Perl Programming, 12.3. Handling Multiple Clients
- signals : Advanced Perl Programming, 4.2.2. Signal Handlers
- handling signals : (see signals)
- hard links
- Perl Cookbook, 9.0. Introduction
- Learning Perl, 13.3. Creating Alternate Names for a File: Linking
- hard references
- Advanced Perl Programming, 1.6.1. Reference Counts
- Programming Perl, 4.1. What Is a Reference?
- Programming Perl, 4.2. Creating Hard References
- Programming Perl, 4.5.1. Hard References Don't Work as Hash Keys
- Harness module : Programming Perl, 7.2.66. Test::Harness - Run Perl Standard Test Scripts with Statistics
- "has-a" relationship : Programming Perl, 5.5.5. Containment (the "Has-a" Relationship)
- hash functions : Advanced Perl Programming, 20.3.3.1. Inside HVs
- hash keys : Learning Perl on Win32 Systems, 1.6.6. Giving Each Person a Different Secret Word
- hash mark : (see # (hash mark))
- Hash module : Programming Perl, 7.2.72. Tie::Hash, Tie::StdHash - Base Class Definitions for Tied Hashes
- hash operators : Learning Perl on Win32 Systems, 5.4. Hash Functions
- hash prototype symbol (%) : Perl in a Nutshell, 4.7.5. Prototypes
- hash values/entries (HVs/HEs) : Advanced Perl Programming, 20.3.3. Hash Values (HVs)
- stashes : (see symbol tables)
- hashes (associative arrays)
- Advanced Perl Programming, 1.6. A View of the Internals
- Perl Cookbook, 4.6. Extracting Unique Elements from a List
- Perl Cookbook, 5.0. Introduction
- Learning Perl, 1.5.6. Giving Each Person a Different Secret Word
- Learning Perl, 5.1. What Is a Hash?
- Learning Perl on Win32 Systems, 1.6.6. Giving Each Person a Different Secret Word
- Learning Perl on Win32 Systems, 5.1. What Is a Hash?
- Perl in a Nutshell, 4.2. Data Types and Variables
- Perl in a Nutshell, 4.2.4.2. Hashes
- Programming Perl, 1.2.1.2. Pluralities
- Programming Perl, 2.2. Built-in Data Types
- Programming Perl, 2.3.5. Hashes (Associative Arrays)
- adding elements to
- Perl Cookbook, 5.1. Adding an Element to a Hash
- Perl Cookbook, 10.11. Prototyping Functions
- anonymous
- Advanced Perl Programming, 1.2.3. References to Anonymous Storage
- Advanced Perl Programming, 1.3.2. Final Shortcut: Omit Arrows Between Subscripts
- Perl Cookbook, 11.0. Introduction
- Programming Perl, 4.2.3. The Anonymous Hash Composer
- of arrays
- Perl Cookbook, 11.2. Making Hashes of Arrays
- Programming Perl, 4.7.2. Hashes of Arrays
- arrow notation for : Advanced Perl Programming, 1.1.7. Shortcuts with the Arrow Notation
- binding
- Advanced Perl Programming, 9.3. Tying Hashes
- Programming Perl, 3.2.24. dbmopen
- comparing for keys : Perl Cookbook, 5.11. Finding Common or Different Keys in Two Hashes
- of complex records : Programming Perl, 4.7.5.3. Generation of a hash of complex records
- creating new elements : Learning Perl, 5.2. Hash Variables
- dictionary file, searching : Programming Perl, 7.2.53. Search::Dict - Search for Key in Dictionary File
- dutree program : Perl Cookbook, 5.16. Program: dutree
- examples
- Advanced Perl Programming, 2.3.1. Representation
- Learning Perl, 1.5.6. Giving Each Person a Different Secret Word
- Learning Perl on Win32 Systems, 1.6.6. Giving Each Person a Different Secret Word
- finding most common anything : Perl Cookbook, 5.14. Finding the Most Common Anything
- functions for processing : Perl in a Nutshell, 5.1. Perl Functions by Category
- global : Programming Perl, 2.9.4. Global Special Arrays
- hard references as keys : Programming Perl, 4.5.1. Hard References Don't Work as Hash Keys
- of hashes : Advanced Perl Programming, 2.2.1. Hash of Hashes Representation
- initializing with x operator : Programming Perl, 2.5.7. Multiplicative Operators
- instead of linear searches : Programming Perl, 8.3.1. Time Efficiency
- inverting
- Perl Cookbook, 5.8. Inverting a Hash
- Programming Perl, 3.2.126. reverse
- key/value pair precedence : Programming Perl, 2.3.5. Hashes (Associative Arrays)
- for list unions, intersections, differences : Perl Cookbook, 4.7. Finding Elements in One Array but Not Another
- literal representation of : Learning Perl, 5.3. Literal Representation of a Hash
- merging : Perl Cookbook, 5.10. Merging Hashes
- multidimensional : Programming Perl, 4.7.4. Hashes of Hashes
- multiple values per key : Perl Cookbook, 5.7. Hashes with Multiple Values Per Key
- named
- Advanced Perl Programming, 1.3. Nested Data Structures
- Programming Perl, 2.3.1. Variables
- order in
- Learning Perl, 5.1. What Is a Hash?
- Learning Perl on Win32 Systems, 5.1. What Is a Hash?
- passing to subroutines : Advanced Perl Programming, 1.2.1. Passing Arrays and Hashes to Subroutines
- presizing : Perl Cookbook, 5.13. Presizing a Hash
- printing : Perl Cookbook, 5.5. Printing a Hash
- reading/writing records to file : Perl Cookbook, 11.10. Reading and Writing Hash Records to Text Files
- references as elements : Perl Cookbook, 5.12. Hashing References
- references to
- Advanced Perl Programming, 1.1.5. References to Hashes
- Advanced Perl Programming, 1.6.2. Array/Hash References Versus Element References
- Perl Cookbook, 11.3. Taking References to Hashes
- removing/deleting elements from
- Perl Cookbook, 5.3. Deleting from a Hash
- Learning Perl, 5.4.4. The delete Function
- Programming Perl, 3.2.26. delete
- representing data relationships : Perl Cookbook, 5.15. Representing Relationships Between Data
- retrieving in insertion order : Perl Cookbook, 5.6. Retrieving from a Hash in Insertion Order
- returning keys and values
- Perl Cookbook, 5.2. Testing for the Presence of a Key in a Hash
- Programming Perl, 3.2.30. each
- Programming Perl, 3.2.79. keys
- Programming Perl, 3.2.187. values
- simulating data structures with : Advanced Perl Programming, 2.1. User-Defined Structures
- slices of : Perl Cookbook, 4.7. Finding Elements in One Array but Not Another
- sorting elements of
- Perl Cookbook, 5.9. Sorting a Hash
- Learning Perl, 15.4. Advanced Sorting
- Programming Perl, 7.2.8.4. In-memory databases
- special (predefined) : Perl in a Nutshell, 4.4.2. Global Special Arrays and Hashes
- stepping through : Learning Perl, 5.4.3. The each Function
- SubstrHash module : Programming Perl, 7.2.74. Tie::SubstrHash - Fixed-table-size, Fixed-key-length Hashing
- symbol tables : Programming Perl, 5.1.1. Symbol Tables
- of symbolic references : Advanced Perl Programming, 1.5. Symbolic References
- tied
- Perl Cookbook, 13.15. Creating Magic Variables with tie
- Programming Perl, 7.2.72. Tie::Hash, Tie::StdHash - Base Class Definitions for Tied Hashes
- traversing : Perl Cookbook, 5.4. Traversing a Hash
- typing : Programming Perl, 5.4.3. Tying Hashes
- variables : Learning Perl, 5.2. Hash Variables
- head()
- LWP::Simple module
- Perl Cookbook, 20.7. Finding Stale Links
- Perl in a Nutshell, Chapter 17, Reference: head
- Perl in a Nutshell, 17.2.2. LWP::Simple
- Mail::Internet module
- Perl in a Nutshell, Chapter 14, Reference: head
- Perl in a Nutshell, Chapter 14, Reference: Head
- Perl in a Nutshell, 14.2.8.1. Counting messages
- Net::NNTP module : Perl in a Nutshell, Chapter 15, Reference: head
- HEAD method : Perl Cookbook, 19.0. Introduction
- =head1 command (pod) : Perl in a Nutshell, Chapter 4, Reference: =head1
- =head2 command (pod) : Perl in a Nutshell, Chapter 4, Reference: =head2
- =head2 pod directive : Perl Cookbook, 12.16. Documenting Your Module with Pod
- HeadAndBody() (Mail::POP3Client)
- Perl in a Nutshell, Chapter 14, Reference: HeadAndBody
- Perl in a Nutshell, 14.2.8.3. Retrieving the message body
- header()
- CGI.pm module
- Perl in a Nutshell, Chapter 10, Reference: header
- Perl in a Nutshell, 10. The CGI.pm Module
- HTTP::Headers module : Perl in a Nutshell, Chapter 17, Reference: header
- HTTP::Message module : Perl in a Nutshell, Chapter 17, Reference: headers
- header files (C) : Advanced Perl Programming, 18.1.1. The Extension Process
- headerfy program (example) : Perl Cookbook, 6.6. Matching Multiple Lines
- headers, HTTP : Perl in a Nutshell, 17.3.3. HTTP::Headers
- -height option
- place geometry manager : Perl in a Nutshell, 18.2.3. The Place Geometry Manager
- widgets : Perl in a Nutshell, 18.3. Common Widget Configuration Options
- hello() (Net::SMTP) : Perl in a Nutshell, Chapter 14, Reference: hello
- Hello, world (program example)
- Learning Perl, 1.5.1. The "Hello, World" Program
- Learning Perl on Win32 Systems, 1.6.1. The "Hello, world" Program
- HELO command (SMTP) : Perl in a Nutshell, 14.1.2. The SMTP Protocol and the SMTP Session
- help
- documentation : Learning Perl on Win32 Systems, 1.5.1. Documentation
- Perl references : Perl Cookbook, Other Books
- pod documentation for modules : Perl Cookbook, 12.16. Documenting Your Module with Pod
- sorting =head1 sections : Perl Cookbook, 15.19. Program: tkshufflepod
- technical support : Learning Perl on Win32 Systems, 1.4. Support
- web references : Perl Cookbook, 19.0. Introduction
- help() (Net::SMTP) : Perl in a Nutshell, Chapter 14, Reference: help
- here documents
- Advanced Perl Programming, 17.4.2. Template Parser
- Perl Cookbook, 1.0. Introduction
- Learning Perl, 19.3. Simplest CGI Program
- Programming Perl, 2.3.2.6. "Here" documents
- indenting : Perl Cookbook, 1.11. Indenting Here Documents
- here strings : Learning Perl, 2.3. Strings
- HEs (hash entries) : Advanced Perl Programming, 20.3.3. Hash Values (HVs)
- hex()
- Perl Cookbook, 2.16. Converting Between Octal and Hexadecimal
- Learning Perl, 2.2.3. Integer Literals
- Learning Perl, 2.4.4. Conversion Between Numbers and Strings
- Learning Perl on Win32 Systems, 2.2.3. Integer Literals
- Learning Perl on Win32 Systems, 2.4.4. Conversion Between Numbers and Strings
- Perl in a Nutshell, Chapter 5, Reference: hex
- Programming Perl, 3.2.73. hex
- hexadecimal numbers
- Perl Cookbook, 2.16. Converting Between Octal and Hexadecimal
- Learning Perl, 2.2.3. Integer Literals
- Programming Perl, 2.3.2.2. String literals
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- Programming Perl, 3.2.73. hex
- hidden() (CGI.pm)
- Perl Cookbook, 19.12. Writing a Multiscreen CGI Script
- Perl in a Nutshell, Chapter 10, Reference: hidden
- Hietaniemi, Jarkko : Perl in a Nutshell, 2.1. The CPAN Architecture
- high-resolution timers : Perl Cookbook, 3.9. High-Resolution Timers
- higher-order procedures : Advanced Perl Programming, 4.2.2.1. Expression plotting
- -highlightbackground option (widgets) : Perl in a Nutshell, 18.3. Common Widget Configuration Options
- -highlightcolor option (widgets) : Perl in a Nutshell, 18.3. Common Widget Configuration Options
- -highlightthickness option (widgets) : Perl in a Nutshell, 18.3. Common Widget Configuration Options
- hints, compiler : Programming Perl, 2.9.3. Global Special Variables
- HiRes module : Advanced Perl Programming, 9.1.1. Example: Stopwatch
- history object (PerlScript) : Perl in a Nutshell, 20.1. Client-Side PerlScript
- history of Perl
- Learning Perl, 1.1. History of Perl
- Programming Perl, 8.7. History Made Practical
- history, command : Programming Perl, 8.1.2. Using the Debugger
- history.db file, grepping : Perl Cookbook, 14.11. Program: ggh - Grep Netscape Global History
- hives, Registry : Learning Perl on Win32 Systems, 16.4.1. The Registry Structure
- hiweb program (example) : Perl Cookbook, 19.1. Writing a CGI Script
- HKEY_LOCAL_MACHINE subtree : Learning Perl on Win32 Systems, 16.4.1. The Registry Structure
- HList widgets
- Advanced Perl Programming, A.8. HList - Hierarchical List
- Advanced Perl Programming, 14.3.11. HList
- home directory : Programming Perl, 3.2.11. chdir
- example of listing : Learning Perl, 16.1. Getting Password and Group Information
- in password file : Learning Perl, 16.1. Getting Password and Group Information
- HOME variable : Perl in a Nutshell, 3.3. Environment Variables
- homepage, Perl : Programming Perl, The Perl Homepage
- hopdelta program : Perl Cookbook, 3.11. Program: hopdelta
- host()
- Mail::Address module
- Perl in a Nutshell, Chapter 14, Reference: host
- Perl in a Nutshell, 14.2.6. Parse Email Addresses with Mail::Address
- URI::URL module : Perl in a Nutshell, Chapter 17, Reference: host
- Host() (Mail::POP3Client)
- Perl in a Nutshell, Chapter 14, Reference: Host
- Perl in a Nutshell, 14.2.8.2. Getting and setting the host and port
- host_wait() (LWP::RobotUA) : Perl in a Nutshell, Chapter 17, Reference: host_wait
- hostname, obtaining your own : Perl Cookbook, 17.8. Finding Your Own Name and Address
- hostnames
- Programming Perl, 3.2.47. gethostbyaddr
- Programming Perl, 3.2.48. gethostbyname
- Programming Perl, 3.2.52. getnetbyname
- Programming Perl, 7.2.62. Sys::Hostname - Try Every Conceivable Way to Get Hostname
- hostpath (IO::Socket::UNIX) : Perl in a Nutshell, Chapter 13, Reference: hostpath
- hosts file : Programming Perl, 3.2.49. gethostent
- hosts, pinging : Programming Perl, 7.2.46. Net::Ping - Check Whether a Host Is Online
- HotKey module : Perl Cookbook, 15.8. Using POSIX termios
- hours : (see date and time)
- HREF fields, substitutions for : Perl Cookbook, 20.15. Program: hrefsub
- hrefsub program (example) : Perl Cookbook, 20.15. Program: hrefsub
- HTML (Hypertext Markup Language)
- converting ASCII to/from : Perl Cookbook, 20.4. Converting ASCII to HTML
- extracting tags : Perl Cookbook, 20.6. Extracting or Removing HTML Tags
- extracting URLs from : Perl Cookbook, 20.3. Extracting URLs
- finding stale/fresh links : Perl Cookbook, 20.7. Finding Stale Links
- formatting, shortcuts in CGI.pm : Perl Cookbook, 19.7. Formatting Lists and Tables with HTML Shortcuts
- forms
- Perl Cookbook, 19.0. Introduction
- Learning Perl, 19.2. Your CGI Program in Context
- Learning Perl, 19.6. Form Generation
- automating submission : Perl Cookbook, 20.2. Automating Form Submission
- elements of : Learning Perl, 19.7. Other Form Elements
- saving/mailing : Perl Cookbook, 19.13. Saving a Form to a File or Mail Pipe
- sticky widgets : Perl Cookbook, 19.11. Creating Sticky Widgets
- putting links around URLs : Perl Cookbook, 6.21. Program: urlify
- tags, generating with CGI.pm : Perl in a Nutshell, 10.1. HTML Tag Generation
- templates : Perl Cookbook, 20.9. Creating HTML Templates
- text substitutions : Perl Cookbook, 20.14. Program: htmlsub
- translating pod to
- Perl in a Nutshell, Chapter 4, Reference: pod2html
- Perl in a Nutshell, 8.121. Pod::Html
- :html method groups : Perl in a Nutshell, 10.2. Importing Method Groups
- HTML modules : Perl in a Nutshell, 17.4. The HTML Module
- HTML::Element : Perl in a Nutshell, 17.4.2. HTML::Element
- HTML::Entities module : Perl Cookbook, 20.4. Converting ASCII to HTML
- HTML::FormatPS : Perl in a Nutshell, 17.4.4. HTML::FormatPS
- HTML::FormatText
- Perl Cookbook, 20.5. Converting HTML to ASCII
- Perl in a Nutshell, 17.4.5. HTML::FormatText
- HTML::LinkExtor module : Perl Cookbook, 20.3. Extracting URLs
- HTML::Parser
- Perl in a Nutshell, 17.4. The HTML Module
- Perl in a Nutshell, 17.4.1. HTML::Parser
- HTML::TreeBuilder
- Perl Cookbook, 20.5. Converting HTML to ASCII
- Perl in a Nutshell, 17.4.3. HTML::TreeBuilder
- :html2 and :html3 import tags : Learning Perl, 19.5. Less Typing
- htmlsub program (example) : Perl Cookbook, 20.14. Program: htmlsub
- HTTP (Hypertext Transfer Protocol)
- debugging exchanges in : Perl Cookbook, 19.9. Debugging the Raw HTTP Exchange
- methods
- Perl Cookbook, 19.0. Introduction
- Perl Cookbook, 19.1. Writing a CGI Script
- request messages : Perl in a Nutshell, 17.1. LWP Overview
- Win32::Internet functions for : Perl in a Nutshell, 19.7.3. HTTP Functions
- HTTP() (Win32::Internet) : Perl in a Nutshell, Chapter 19, Reference: HTTP
- HTTP modules
- HTTP::Cookies module : Perl in a Nutshell, 17.3.6. HTTP::Cookies
- HTTP::Cookies::Netscape module : Perl in a Nutshell, 17.3.6.1. HTTP::Cookies::Netscape
- HTTP::Daemon module : Perl in a Nutshell, 17.3.7. HTTP::Daemon
- HTTP::Daemon::ClientConn module : Perl in a Nutshell, 17.3.7.1. HTTP::Daemon::ClientConn methods
- HTTP::Date module : Perl in a Nutshell, 17.3.5. HTTP::Date
- HTTP::Headers module : Perl in a Nutshell, 17.3.3. HTTP::Headers
- HTTP::Message module : Perl in a Nutshell, 17.3.8. HTTP::Message
- HTTP::Request module
- Perl in a Nutshell, 17.1. LWP Overview
- Perl in a Nutshell, 17.3.1. HTTP::Request
- HTTP::Response module
- Perl in a Nutshell, 17.1. LWP Overview
- Perl in a Nutshell, 17.3.2. HTTP::Response
- HTTP::Status module : Perl in a Nutshell, 17.3.4. HTTP::Status
- HTTP_ACCEPT variable : Perl in a Nutshell, 9.4. CGI Environment Variables
- HTTP_COOKIE variable : Perl in a Nutshell, 9.4. CGI Environment Variables
- HTTP_FROM variable : Perl in a Nutshell, 9.4. CGI Environment Variables
- HTTP_REFERER variable : Perl in a Nutshell, 9.4. CGI Environment Variables
- HTTP_USER_AGENT variable : Perl in a Nutshell, 9.4. CGI Environment Variables
- Hubbard, John : Advanced Perl Programming, 18.6. A Detour into Fractals
- human-readable databases : Learning Perl, 17.5. Variable-Length (Text) Databases
- Hungarian notation : Advanced Perl Programming, 1.2.4. Dereferencing Multiple Levels of Indirection
- HVs (hash values) : Advanced Perl Programming, 20.3.3. Hash Values (HVs)
- hyperlinks
- Perl Cookbook, 9.0. Introduction
- Perl Cookbook, 20.7. Finding Stale Links
- hyphen : (see - (hyphen))
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