Index

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# Index: H

h command (debugger) : 8.1.1. Debugger Commands
H command (debugger) : 8.1.1. Debugger Commands
-h switch, perl : 6.1.2. Switches
hard references
  4.1. What Is a Reference?
  4.2. Creating Hard References
  4.5.1. Hard References Don't Work as Hash Keys
Harness module : 7.2.66. Test::Harness - Run Perl Standard Test Scripts with Statistics
"has-a" relationship : 5.5.5. Containment (the "Has-a" Relationship)
hash mark : (see # (sharp))
Hash module : 7.2.72. Tie::Hash, Tie::StdHash - Base Class Definitions for Tied Hashes
hashes
  1.2.1.2. Pluralities
  2.2. Built-in Data Types
  2.3.5. Hashes (Associative Arrays)
  anonymous, references to : 4.2.3. The Anonymous Hash Composer
  of arrays, code for : 4.7.2. Hashes of Arrays
  automatic sorting of : 7.2.8.4. In-memory databases
  binding DBM file to : 3.2.24. dbmopen
  of complex records : 4.7.5.3. Generation of a hash of complex records
  deleting values from : 3.2.26. delete
  dictonary file, searching : 7.2.53. Search::Dict - Search for Key in Dictionary File
  global : 2.9.4. Global Special Arrays
  hard references as keys : 4.5.1. Hard References Don't Work as Hash Keys
  initializing with x operator : 2.5.7. Multiplicative Operators
  instead of linear searches : 8.3.1. Time Efficiency
  inverting : 3.2.126. reverse
  key/value pair precedence : 2.3.5. Hashes (Associative Arrays)
  multidimensional : 4.7.4. Hashes of Hashes
  names for : 2.3.1. Variables
  returning key-value pairs : 3.2.30. each
  returning list of keys : 3.2.79. keys
  returning values of : 3.2.187. values
  SubstrHash module : 7.2.74. Tie::SubstrHash - Fixed-table-size, Fixed-key-length Hashing
  symbol tables : 5.1.1. Symbol Tables
  tied : 7.2.72. Tie::Hash, Tie::StdHash - Base Class Definitions for Tied Hashes
  typing : 5.4.3. Tying Hashes
here documents : 2.3.2.6. "Here" documents
hex function : 3.2.73. hex
hexadecimal numbers
  2.3.2.2. String literals
  2.4.1.2. The rules of regular expression matching
  3.2.73. hex
hints, compiler : 2.9.3. Global Special Variables
history of Perl : 8.7. History Made Practical
history, command : 8.1.2. Using the Debugger
home directory : 3.2.11. chdir
homepage, Perl : The Perl Homepage
hostnames : 7.2.62. Sys::Hostname - Try Every Conceivable Way to Get Hostname
  getting from network addresses : 3.2.47. gethostbyaddr
  translating to addresses
    3.2.48. gethostbyname
    3.2.52. getnetbyname
hosts file : (see /etc/hosts file)
hosts, pinging : 7.2.46. Net::Ping - Check Whether a Host Is Online
hyphen : (see - (hyphen))

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