Index

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# Index: H

h2ph tool : 12.14. Using h2ph to Translate C #include Files
h2xs tool
  12.8. Preparing a Module for Distribution
  12.15. Using h2xs to Make a Module with C Code
handles : (see filehandles)
handling signals : (see signals)
hard links : 9.0. Introduction
hashes
  4.6. Extracting Unique Elements from a List
  5.0. Introduction
  adding elements to
    5.1. Adding an Element to a Hash
    10.11. Prototyping Functions
  anonymous : 11.0. Introduction
  of arrays : 11.2. Making Hashes of Arrays
  arrays and : 5.0. Introduction
  comparing for keys : 5.11. Finding Common or Different Keys in Two Hashes
  deleting elements of : 5.3. Deleting from a Hash
  dutree program : 5.16. Program: dutree
  finding most common anything : 5.14. Finding the Most Common Anything
  for list unions, intersections, differences : 4.7. Finding Elements in One Array but Not Another
  inverting : 5.8. Inverting a Hash
  merging : 5.10. Merging Hashes
  multiple values per key : 5.7. Hashes with Multiple Values Per Key
  presizing : 5.13. Presizing a Hash
  printing : 5.5. Printing a Hash
  reading/writing records to file : 11.10. Reading and Writing Hash Records to Text Files
  references as elements : 5.12. Hashing References
  references to : 11.3. Taking References to Hashes
  representing data relationships : 5.15. Representing Relationships Between Data
  retrieving in insertion order : 5.6. Retrieving from a Hash in Insertion Order
  slices of : 4.7. Finding Elements in One Array but Not Another
  sorting elements : 5.9. Sorting a Hash
  testing for keys : 5.2. Testing for the Presence of a Key in a Hash
  ties for (examples) : 13.15. Creating Magic Variables with tie
  traversing : 5.4. Traversing a Hash
HEAD method : 19.0. Introduction
head( ) (LWP::Simple) : 20.7. Finding Stale Links
=head2 pod directive : 12.16. Documenting Your Module with Pod
headerfy program (example) : 6.6. Matching Multiple Lines
help
  documentation conventions : Conventions Used in This Book
  Perl references : Other Books
  pod documentation for modules : 12.16. Documenting Your Module with Pod
    sorting =head1 sections : 15.19. Program: tkshufflepod
  web references : 19.0. Introduction
here documents : 1.0. Introduction
  indenting : 1.11. Indenting Here Documents
hex( ) : 2.16. Converting Between Octal and Hexadecimal
hexadecimal numbers : 2.16. Converting Between Octal and Hexadecimal
hidden( ) : 19.12. Writing a Multiscreen CGI Script
high-resolution timers : 3.9. High-Resolution Timers
history.db file, grepping : 14.11. Program: ggh - Grep Netscape Global History
hiweb program (example) : 19.1. Writing a CGI Script
hopdelta program : 3.11. Program: hopdelta
hostname, obtaining your own : 17.8. Finding Your Own Name and Address
HotKey module : 15.8. Using POSIX termios
hours : (see date and time)
HREF fields, substitutions for : 20.15. Program: hrefsub
hrefsub program (example) : 20.15. Program: hrefsub
HTML
  converting ASCII to/from : 20.4. Converting ASCII to HTML
  extracting tags : 20.6. Extracting or Removing HTML Tags
  extracting URLs from : 20.3. Extracting URLs
  finding stale/fresh links : 20.7. Finding Stale Links
  formatting, shortcuts in CGI.pm : 19.7. Formatting Lists and Tables with HTML Shortcuts
  putting links around URLs : 6.21. Program: urlify
  templates : 20.9. Creating HTML Templates
  text substitutions : 20.14. Program: htmlsub
HTML forms : 19.0. Introduction
  automating submission : 20.2. Automating Form Submission
  saving/mailing : 19.13. Saving a Form to a File or Mail Pipe
  sticky widgets : 19.11. Creating Sticky Widgets
HTML::Entities module : 20.4. Converting ASCII to HTML
HTML::FormatText module : 20.5. Converting HTML to ASCII
HTML::LinkExtor module : 20.3. Extracting URLs
HTML::TreeBuilder module : 20.5. Converting HTML to ASCII
htmlsub program (example) : 20.14. Program: htmlsub
HTTP methods
  19.0. Introduction
  19.1. Writing a CGI Script
HTTP, debugging exchanges in : 19.9. Debugging the Raw HTTP Exchange
hyperlinks : 9.0. Introduction
  stale/fresh : 20.7. Finding Stale Links

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