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# Index: L

l command (Perl debugger)
  Perl in a Nutshell, Chapter 6, Reference: l
  Programming Perl, 8.1.1. Debugger Commands
L command (Perl debugger)
  Perl in a Nutshell, Chapter 6, Reference: L
  Programming Perl, 8.1.1. Debugger Commands
-l file test operator
  Learning Perl, 10.5. The -x File Tests
  Perl in a Nutshell, 4.5.8. File Test Operators
  Programming Perl, 2.5.10. Named Unary and File Test Operators
L<> interior sequence (pod) : Perl in a Nutshell, 4.11.2. Interior sequences
-l option (dprofpp) : Perl in a Nutshell, 6.5. The Perl Profiler
-L option (perlcc) : Perl in a Nutshell, 3.4. The Perl Compiler
\l string escape : Perl Cookbook, 1.9. Controlling Case
\L string escape : Perl Cookbook, 1.9. Controlling Case
-l switch, perl
  Perl in a Nutshell, 3.2. Command-Line Options
  Programming Perl, 6.1.2. Switches
-label option
  Frame widget : Perl in a Nutshell, 18.17. The Frame Widget
  Menubutton widget : Perl in a Nutshell, 18.14.1. Menu Item Options
  Scale widget : Perl in a Nutshell, 18.13. The Scale Widget
Label widget (Perl/Tk) : Perl in a Nutshell, 18.7. The Label Widget
label_exists() (Mail::Folder) : Perl in a Nutshell, Chapter 14, Reference: label_exists
-labelPack option (Frame) : Perl in a Nutshell, 18.17. The Frame Widget
labels
  Advanced Perl Programming, 14.3.2. Labels and Buttons
  Learning Perl, 9.4. Labeled Blocks
  goto statement
    Programming Perl, 2.6.6. Goto
    Programming Perl, 3.2.71. goto
  loops
    Perl in a Nutshell, 4.3.1.5. Loop control
    Programming Perl, 2.6.4. Loop Statements
    Programming Perl, 2.6.4.4. Loop control
    Programming Perl, 8.4. Programming with Style
  menu : Perl Cookbook, 15.14. Creating Menus with Tk
  names for : Programming Perl, 2.3.1. Variables
  statement blocks : Perl in a Nutshell, 4.3. Statements
-labelVariable option (Frame) : Perl in a Nutshell, 18.17. The Frame Widget
languages
  extension modules : Learning Perl on Win32 Systems, B.2.14. For Developers: Language Extensions and Platform Development Support
  generating in Perl : Programming Perl, 6.4.1.1. Generating other languages in Perl
  generating Perl in : Programming Perl, 6.4.1.2. Generating Perl in other languages
  natural vs. artificial : Programming Perl, 1.2. Natural and Artificial Languages
  translating
    Programming Perl, 6.4.2. Translation from Other Languages
    Programming Perl, 8.5.1. Translation from Awk and Sed
last operator
  Perl Cookbook, 4.12. Finding the First List Element That Passes a Test
  Learning Perl on Win32 Systems, 9.1. The last Statement
  Perl in a Nutshell, Chapter 5, Reference: last
  Perl in a Nutshell, 4.3.1.5. Loop control
  Programming Perl, 1.6.2.4. Breaking out: next and last
  Programming Perl, 2.6.4.4. Loop control
  Programming Perl, 3.2.81. last
  Programming Perl, 8.3.1. Time Efficiency
  Programming Perl, 8.4. Programming with Style
  examples of
    Learning Perl on Win32 Systems, A.8. Chapter 9, Miscellaneous Control Structures
    Learning Perl on Win32 Systems, 9.5. Expression Modifiers
  Net::NNTP module : Perl in a Nutshell, Chapter 15, Reference: last
  Net::POP3 module : Perl in a Nutshell, Chapter 14, Reference: last
Last() (Mail::POP3Client) : Perl in a Nutshell, Chapter 14, Reference: Last
last access/modification times
  Learning Perl, 13.7. Modifying Timestamps
  Learning Perl on Win32 Systems, 13.5. Modifying Timestamps
last index (Menu widget) : Perl in a Nutshell, 18.15.1. Menu Indexes
last_labeled_message() (Mail::Folder) : Perl in a Nutshell, Chapter 14, Reference: last_labeled_message
last_message() (Mail::Folder) : Perl in a Nutshell, Chapter 14, Reference: last_message
$LAST_PAREN_MATCH ($+) variable
  Perl Cookbook, 6.0. Introduction
  Perl in a Nutshell, 4.4.5. Regular Expression Special Variables
  Programming Perl, 2.4.1.3. The fine print
  Programming Perl, 2.9.1. Regular Expression Special Variables
  Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
LastError() (Win32::OLE) : Perl in a Nutshell, Chapter 19, Reference: LastError
laston program : Perl Cookbook, 8.20. Program: laston
LaTeX, translating pod to : Perl in a Nutshell, Chapter 4, Reference: pod2latex
lc()
  Perl Cookbook, 1.9. Controlling Case
  Perl in a Nutshell, Chapter 5, Reference: lc
  Programming Perl, 3.2.82. lc
lcfirst()
  Perl Cookbook, 1.9. Controlling Case
  Perl in a Nutshell, Chapter 5, Reference: lcfirst
  Programming Perl, 3.2.83. lcfirst
le (less than or equal) operator
  Learning Perl, 2.4.2. Operators for Strings
  Perl in a Nutshell, 4.5.4.1. Relational operators
leading whitespace, removing : Perl Cookbook, 1.14. Trimming Blanks from the Ends of a String
leaving : (see terminating)
left angle bracket : (see < > (angle brackets))
left associativity : Learning Perl, 2.4.3. Operator Precedence and Associativity
left justification : Programming Perl, 2.8.1. Format Variables
left-right pairs as delimiters : Learning Perl, 7.4.3. Using a Different Delimiter
left-shift (<<) operator : Programming Perl, 2.5.9. Shift Operators
length
  of arrays : Programming Perl, 2.3.4. List Values and Arrays
  of strings : Programming Perl, 8.3.1. Time Efficiency
length()
  Learning Perl, A.15. Chapter 16, System Database Access
  Learning Perl, 17.4. Fixed-Length Random Access Databases
  Learning Perl on Win32 Systems, 17.4. Fixed-Length Random-Access Databases
  Perl in a Nutshell, Chapter 5, Reference: length
  Programming Perl, 3.2.84. length
-length option (Scale) : Perl in a Nutshell, 18.13. The Scale Widget
less module : Perl in a Nutshell, 8.102. less
less than (<, lt) operators
  Learning Perl on Win32 Systems, 2.4.2. Operators for Strings
  Perl in a Nutshell, 4.5.4.1. Relational operators
  Programming Perl, 2.5.11. Relational Operators
less than or equal (<, le) operators
  Learning Perl, 2.4.2. Operators for Strings
  Perl in a Nutshell, 4.5.4.1. Relational operators
  Programming Perl, 2.5.11. Relational Operators
less than sign : (see < > (angle brackets))
lexical scoping
  Advanced Perl Programming, 3.1.2. Lexical Versus Dynamic Scoping
  Perl Cookbook, 10.2. Making Variables Private to a Function
  Perl Cookbook, 10.13. Saving Global Values
  Perl in a Nutshell, 4.2.6. Declarations and Scope
  Perl in a Nutshell, 4.7.4. Private and Local Variables
  Programming Perl, 2.6.8. Scoped Declarations
lexical variables
  Advanced Perl Programming, 3.1.1. Lexical Variables
  Advanced Perl Programming, 6.1.1. Packages and Variables
lib module
  Perl in a Nutshell, 8.103. lib
  Programming Perl, 7.2.41. lib - Manipulate @INC at Compile-Time
lib-win32 library : (see Win32 modules)
lib-www-perl file : (see LWP library)
Liblist module : Programming Perl, 7.2.17. ExtUtils::Liblist - Determine Libraries to Use and How to Use Them
libnet modules : Perl in a Nutshell, 14. Email Connectivity
libraries
  (see directories)
  Advanced Perl Programming, 6.2. Packages and Files
  Perl Cookbook, 12.0. Introduction
  Programming Perl, 7. The Standard Perl Library
  definition of : Learning Perl on Win32 Systems, B.1. Library Terminology
  ExtUtils::Liblist module : Programming Perl, 7.2.17. ExtUtils::Liblist - Determine Libraries to Use and How to Use Them
  WWW access in Perl (LWP) : Learning Perl, 19.10.3. Web Automation with LWP
library modules, functions for : Perl in a Nutshell, 5.1. Perl Functions by Category
libwin32 package : Learning Perl on Win32 Systems, 1.3.2. Standard Perl Distribution
libwww-perl modules : Perl Cookbook, 20.0. Introduction
line breaks
  (see also whitespace)
  Perl Cookbook, 6.6. Matching Multiple Lines
  counting lines in files : Perl Cookbook, 8.2. Counting Lines (or Paragraphs or Records) in a File
  defining lines : Perl Cookbook, 8.11. Processing Binary Files
  deleting last file line : Perl Cookbook, 8.10. Removing the Last Line of a File
  extracting ranges of lines : Perl Cookbook, 6.8. Extracting a Range of Lines
  matching across multiple lines : Perl Cookbook, 6.6. Matching Multiple Lines
  random lines from files : Perl Cookbook, 8.6. Picking a Random Line from a File
  randomizing file line order : Perl Cookbook, 8.7. Randomizing All Lines
  reading files backwards : Perl Cookbook, 8.4. Reading a File Backwards by Line or Paragraph
  reading with continuation characters : Perl Cookbook, 8.1. Reading Lines with Continuation Characters
line counter : (see $ variables, $. variable)
line input operators : (see angle operator)
line mode interfaces : Perl Cookbook, 15.0. Introduction
line number : Programming Perl, 2.3.2.7. Other literal tokens
__LINE__ token
  Perl Cookbook, 10.4. Determining Current Function Name
  Perl in a Nutshell, 4.4.4. Global Special Constants
  Programming Perl, 2.3.2.7. Other literal tokens
line-end processing
  Perl in a Nutshell, 3.2. Command-Line Options
  Programming Perl, 6.1.2. Switches
line-input <...> operator : Perl in a Nutshell, 4.9. Filehandles
line-oriented quoting : Programming Perl, 2.3.2.6. "Here" documents
LINE: (implicit loop label) : Perl Cookbook, 7.7. Writing a Filter
LineInfo option (PERLDB_OPTS) : Perl in a Nutshell, 6.4. Customizing the Debugger
linestart, lineend modifiers (Text widget) : Perl in a Nutshell, 18.11.1. Text Indexes and Modifiers
Lingua::EN::Inflect module : Perl Cookbook, 2.18. Printing Correct Plurals
link()
  Learning Perl, A.12. Chapter 13, File and Directory Manipulation
  Learning Perl, 13.3.2. Creating Hard and Soft Links with Perl
  Learning Perl on Win32 Systems, 13. File and Directory Manipulation
  Perl in a Nutshell, Chapter 5, Reference: link
  Programming Perl, 3.2.85. link
link object (PerlScript) : Perl in a Nutshell, 20.1.1. The Document Object
links
  (see hyperlinks)
  (see symbolic links)
Lint backend (Perl compiler) : Perl in a Nutshell, 3.4. The Perl Compiler
Linux, installing Perl and : Perl in a Nutshell, 2.3.1. Installing on Unix
list()
  Net::FTP module : Perl in a Nutshell, Chapter 16, Reference: list
  Net::NNTP module : Perl in a Nutshell, Chapter 15, Reference: list
  Net::POP3 module : Perl in a Nutshell, Chapter 14, Reference: list
List()
  Mail::POP3Client module : Perl in a Nutshell, Chapter 14, Reference: List
  Win32::Internet module : Perl in a Nutshell, Chapter 19, Reference: List
list active command (NNTP) : Perl in a Nutshell, 15.1. The NNTP Protocol
list_all_labels() (Mail::Folder) : Perl in a Nutshell, Chapter 14, Reference: list_all_labels
list assignment : Perl Cookbook, 1.3. Exchanging Values Without Using Temporary Variables
list context
  Perl in a Nutshell, 4.2.5. Scalar and List Contexts
  Programming Perl, 1.8. List Processing
  Programming Perl, 2.3.3.1. Scalar and list context
  Programming Perl, 3. Functions
  angle operator in : Programming Perl, 2.3.7.2. Line input (angle) operator
  detecting : Perl Cookbook, 10.6. Detecting Return Context
  forcing scalar context instead : Programming Perl, 3.2.131. scalar
  range (..) operator in : Programming Perl, 2.5.15. Range Operator
  recognizing in debugger : Programming Perl, 8.1.2. Using the Debugger
list_labels() (Mail::Folder) : Perl in a Nutshell, Chapter 14, Reference: list_labels
list prototype symbol (@) : Perl in a Nutshell, 4.7.5. Prototypes
list reference (in Perl 5.0) : Learning Perl, 3.4.1. Assignment
$LIST_SEPARATOR ($") variable
  Perl in a Nutshell, 4.4.1. Global Special Variables
  Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
Listbox widget (Perl/Tk) : Perl in a Nutshell, 18.10. The Listbox Widget
listen()
  Perl Cookbook, 17.0. Introduction
  Perl in a Nutshell, Chapter 5, Reference: listen
  Programming Perl, 3.2.86. listen
  Socket module
    Perl in a Nutshell, 13.1. Built-in Socket Functions
    Perl in a Nutshell, 13.1.3. Server Connections
Listen option
  IO::Socket::INET module : Perl in a Nutshell, 13.2.4. IO::Socket::INET Reference
  IO::Socket::UNIX module : Perl in a Nutshell, 13.2.5. IO::Socket::UNIX Reference
listgroup() (Net::NNTP) : Perl in a Nutshell, Chapter 15, Reference: listgroup
listing code : Programming Perl, 8.1.1. Debugger Commands
listing the /etc directory, example of : Learning Perl, 12.5. Reading a Directory Handle
lists
  (see also arrays)
  Perl Cookbook, 4.0. Introduction
  Learning Perl, 1.5.5. More than One Secret Word
  Learning Perl, 3.1. What Is a List or Array?
  Learning Perl on Win32 Systems, 1.6.5. More than One Secret Word
  Learning Perl on Win32 Systems, 3.1. What Is a List or Array?
  Perl in a Nutshell, 4.2.3. Lists
  Programming Perl, 1.2.1.2. Pluralities
  Programming Perl, 2.3.4. List Values and Arrays
  arrays vs. : Perl Cookbook, 4.0. Introduction
  chopping : Programming Perl, 3.2.14. chop
  circular : Perl Cookbook, 4.16. Implementing a Circular List
  constructor operator (..) : Learning Perl, 3.2. Literal Representation
  extracting particular elements/subsets
    Perl Cookbook, 4.6. Extracting Unique Elements from a List
    Perl Cookbook, 4.13. Finding All Elements in an Array Matching Certain Criteria
  flattened : Perl Cookbook, 4.0. Introduction
  foreach statement and
    Learning Perl, 4.5. The foreach Statement
    Learning Perl on Win32 Systems, 4.6. The foreach Statement
  as function arguments : Programming Perl, 3. Functions
  functions for processing : Perl in a Nutshell, 5.1. Perl Functions by Category
  HList widgets
    Advanced Perl Programming, A.8. HList - Hierarchical List
    Advanced Perl Programming, 14.3.11. HList
  initializing : Perl Cookbook, 4.1. Specifying a List In Your Program
  iterating through all elements
    Perl Cookbook, 4.4. Doing Something with Every Element in a List
    Perl Cookbook, 4.12. Finding the First List Element That Passes a Test
  Listbox widgets
    Advanced Perl Programming, A.4. Listbox
    Advanced Perl Programming, 14.3.6. Listbox
  map function and : Programming Perl, 3.2.91. map
  nested
    Learning Perl, 3.4.1. Assignment
    Programming Perl, 4.6. A Brief Tutorial: Manipulating Lists of Lists
    Programming Perl, 4.7. Data Structure Code Examples
  operators for
    Perl in a Nutshell, 4.5. Operators
    Programming Perl, 2.5.1. Terms and List Operators (Leftward)
    Programming Perl, 2.5.19. List Operators (Rightward)
  passing arguments to subroutines : Perl in a Nutshell, 4.7.2. Passing Arguments
  permute programs : Perl Cookbook, 4.19. Program: permute
  printing with commas : Perl Cookbook, 4.2. Printing a List with Commas
  processing multiple elements : Perl Cookbook, 4.11. Processing Multiple Elements of an Array
  randomizing element order : Perl Cookbook, 4.17. Randomizing an Array
  replicating with x operator : Programming Perl, 2.5.7. Multiplicative Operators
  returning elements in reverse order : Programming Perl, 3.2.126. reverse
  reversing elements of : Perl Cookbook, 4.10. Reversing an Array
  ScrlListBox function : Advanced Perl Programming, 14.3.9. Scrollbars and Scrolling
  scrolling : Learning Perl, 19.7.2. Fancier Calling Sequences
  sorting : Programming Perl, 3.2.153. sort
  as subroutine return values : Learning Perl, 8.3. Return Values
  as subscript, examples of
    Learning Perl, A.15. Chapter 16, System Database Access
    Learning Perl, 16.1. Getting Password and Group Information
  syscall function with : Programming Perl, 3.2.164. syscall
  unions, intersections, differences : Perl Cookbook, 4.7. Finding Elements in One Array but Not Another
  values of : Programming Perl, 2.3.4. List Values and Arrays
  words program (example) : Perl Cookbook, 4.18. Program: words
LISTs
  (see also lists)
  Programming Perl, 1.8. List Processing
literal lists, slices of : Learning Perl, 3.4.2. Array Element Access
literals : Programming Perl, 2.4.1.1. The regular expression bestiary
  array literals : Learning Perl, 3.2. Literal Representation
  hashes (associative arrays) : Learning Perl, 5.3. Literal Representation of a Hash
  numeric : (see numbers)
  pseudo-literals : (see input, operators)
  string : (see strings)
little-endian : Learning Perl, 16.2. Packing and Unpacking Binary Data
llamas, counting : Learning Perl, 18.1. Converting awk Programs to Perl
ln command
  and -s option, emulating : Learning Perl, 13.3.2. Creating Hard and Soft Links with Perl
  and creating links : Learning Perl, 13.3.2. Creating Hard and Soft Links with Perl
.lnk files : Perl in a Nutshell, 19.16. Win32::Shortcut
load()
  HTTP::Cookies module : Perl in a Nutshell, Chapter 17, Reference: load
  News::Newsrc module : Perl in a Nutshell, Chapter 15, Reference: load
Load()
  Win32::OLE::Const module : Perl in a Nutshell, 19.18.5. Win32::OLE::Const
  Win32::Registry module : Perl in a Nutshell, Chapter 19, Reference: Load
  Win32::Shortcut module : Perl in a Nutshell, Chapter 19, Reference: Load
load_all function : Advanced Perl Programming, 11.3.1.2. Retrieving objects
load path : Advanced Perl Programming, 6.2.1. Load Path
loader program (example) : Perl Cookbook, 15.17. Removing the DOS Shell Window with Windows Perl/Tk
loading functions : (see AutoLoader module; SelfLoader module)
  AutoLoader module : Perl in a Nutshell, 8.3. AutoLoader
  DynaLoader module : Perl in a Nutshell, 8.44. DynaLoader
  SelfLoader module
    Perl in a Nutshell, 8.129. SelfLoader
    Programming Perl, 7.2.9. Devel::SelfStubber - Generate Stubs for a SelfLoading Module
    Programming Perl, 7.2.55. SelfLoader - Load Functions Only on Demand
loading modules : (see modules)
local
  communications : Programming Perl, 6.2.4.2. UNIX-domain clients and servers
  declaration : Programming Perl, 3.2.87. local
  filehandles
    Advanced Perl Programming, 3.4.3. Localizing Filehandles
    Programming Perl, 2.3.6. Typeglobs and Filehandles
  servers : Learning Perl on Win32 Systems, 19.1. Introduction to OLE Automation
  time : Programming Perl, 7.2.75. Time::Local - Efficiently Compute Time from Local and GMT Time
  variables
    Advanced Perl Programming, 3.2.3. Aliasing Problem: Variable Suicide
    Advanced Perl Programming, 4.3.1. Closures, Behind the Scenes
    Advanced Perl Programming, 20.3.5.2. How local and my work
    Perl in a Nutshell, 4.2.6. Declarations and Scope
    Perl in a Nutshell, 4.7.4. Private and Local Variables
    Programming Perl, 2.6.8. Scoped Declarations
    Programming Perl, 3.2.87. local
    Programming Perl, 8.2.2. Frequently Ignored Advice
    and foreach statement : Learning Perl, 4.5. The foreach Statement
    creating, with local() : Learning Perl, 8.5. Private Variables in Functions
    foreach statement : Learning Perl on Win32 Systems, 4.6. The foreach Statement
    in subroutines, example of : Learning Perl on Win32 Systems, 8.4. Arguments
local()
  Perl Cookbook, 10.13. Saving Global Values
  Perl Cookbook, 10.14. Redefining a Function
  Perl Cookbook, 16.16. Temporarily Overriding a Signal Handler
  Learning Perl, 8.5. Private Variables in Functions
  Perl in a Nutshell, Chapter 5, Reference: local
  Programming Perl, 3.2.87. local
  Programming Perl, 8.2.1. Universal Blunders
  Programming Perl, 8.2.2. Frequently Ignored Advice
  examples of
    Learning Perl, A.7. Chapter 8, Functions
    Learning Perl, 11.4.2. Numeric Fields
    Learning Perl on Win32 Systems, A.7. Chapter 8, Functions
    Learning Perl on Win32 Systems, 11.4.2. Numeric Fields
  loops and : Learning Perl, 8.5. Private Variables in Functions
Local module : Programming Perl, 7.2.75. Time::Local - Efficiently Compute Time from Local and GMT Time
local operator
  Advanced Perl Programming, 1.2.3. References to Anonymous Storage
  Advanced Perl Programming, 3.1.2. Lexical Versus Dynamic Scoping
Local option (IO::Socket::UNIX) : Perl in a Nutshell, 13.2.5. IO::Socket::UNIX Reference
LocalAddr option (IO::Socket::INET) : Perl in a Nutshell, 13.2.4. IO::Socket::INET Reference
locale module : Perl in a Nutshell, 8.104. locale
locale settings : Perl Cookbook, 6.12. Honoring Locale Settings in Regular Expressions
localizing functions : Perl Cookbook, 10.14. Redefining a Function
localizing variables : Advanced Perl Programming, 1.2.3. References to Anonymous Storage
LocalPort option (IO::Socket::INET) : Perl in a Nutshell, 13.2.4. IO::Socket::INET Reference
localtime()
  Perl Cookbook, 3.0. Introduction
  Perl Cookbook, 3.8. Printing a Date
  Perl in a Nutshell, Chapter 5, Reference: localtime
  Perl in a Nutshell, 4.2.5. Scalar and List Contexts
  Programming Perl, 3.2.88. localtime
location object (PerlScript) : Perl in a Nutshell, 20.1. Client-Side PerlScript
lockarea program : Perl Cookbook, 7.22. Program: lockarea
lockf function, emulating : Programming Perl, 3.2.37. fcntl
locking
  blocking signals : Perl Cookbook, 16.20. Blocking Signals
  databases : Programming Perl, 7.2.8.7. Locking databases
  DBK files : Perl Cookbook, 14.5. Locking DBM Files
  DBM files : Programming Perl, 3.2.24. dbmopen
  files
    Perl Cookbook, 7.11. Locking a File
    Perl Cookbook, 7.21. Program: netlock
  region-specific locks : Perl Cookbook, 7.22. Program: lockarea
log()
  Perl Cookbook, 2.13. Taking Logarithms
  Perl in a Nutshell, Chapter 5, Reference: log
  Programming Perl, 3.2.89. log
log files
  Perl Cookbook, 19.0. Introduction
  Perl Cookbook, 20.12. Parsing a Web Server Log File
  Programming Perl, 7.2.63. Sys::Syslog - Perl Interface to UNIX syslog(3) Calls
  processing : Perl Cookbook, 20.13. Processing Server Logs
-log option (perlcc) : Perl in a Nutshell, 3.4. The Perl Compiler
log10() : Perl Cookbook, 2.13. Taking Logarithms
log_base() (example) : Perl Cookbook, 2.13. Taking Logarithms
logarithms (mathematic)
  Perl Cookbook, 2.13. Taking Logarithms
  Programming Perl, 3.2.89. log
LOGDIR variable : Perl in a Nutshell, 3.3. Environment Variables
Logfile::Apache : Perl Cookbook, 20.13. Processing Server Logs
logical functionality in patterns : Perl Cookbook, 6.17. Expressing AND, OR, and NOT in a Single Pattern
logical operators
  Perl in a Nutshell, 4.5.9. Logical Operators
  Programming Perl, 1.5.5. Logical Operators
  Programming Perl, 2.5.14. C-style Logical (Short Circuit) Operators
  Programming Perl, 2.5.20. Logical and, or, not, and xor
  AND (&&) : Programming Perl, 2.5.14. C-style Logical (Short Circuit) Operators
  comparison : Learning Perl, 2.4.1. Operators for Numbers
  negation (!)
    Learning Perl on Win32 Systems, 1.6.9. Making It a Bit More Modular
    Programming Perl, 2.5.5. Ideographic Unary Operators
  OR (||) operator : Programming Perl, 2.5.14. C-style Logical (Short Circuit) Operators
logical text widget positioning : Advanced Perl Programming, 14.3.5.2. Inserting text at logical positions
login()
  Net::FTP module : Perl in a Nutshell, Chapter 16, Reference: login
  Net::Netrc module : Perl in a Nutshell, Chapter 16, Reference: login
  Net::POP3 module
    Perl in a Nutshell, Chapter 14, Reference: login
    Perl in a Nutshell, 14.1.3. Retrieving Email with Net::POP3
Login() (Mail::POP3Client)
  Perl in a Nutshell, Chapter 14, Reference: Login
  Perl in a Nutshell, 14.2.8.6. Explicitly opening and closing connections
login entries (.netrc) : Perl in a Nutshell, 16.3. FTP Configuration with Net::Netrc
login names, accessing : Learning Perl, 7.7. Exercises
login sessions : Perl Cookbook, 15.0. Introduction
login shells, example of changing : Learning Perl, 17.5. Variable-Length (Text) Databases
LoginName function : Learning Perl on Win32 Systems, 16.1. Getting User and Machine Information
LoginName module : Learning Perl on Win32 Systems, B.4. Win32 Extensions
logn() (Math::Complex) : Perl Cookbook, 2.13. Taking Logarithms
Long module : Programming Perl, 7.2.35. Getopt::Long - Extended Processing of Command-Line Options
longjmp function : Advanced Perl Programming, 5.6. Using Eval for Time-Outs
LongReadLen attribute (DBI) : Perl in a Nutshell, 12.2.3. Database Handles and Statement Handles
LongTruncOk attribute (DBI) : Perl in a Nutshell, 12.2.3. Database Handles and Statement Handles
look() : Programming Perl, 7.2.53. Search::Dict - Search for Key in Dictionary File
look command (CPAN.pm) : Perl in a Nutshell, Chapter 2, Reference: look
lookahead assertion : Programming Perl, 2.4.1.4. Regular expression extensions
lookup() (Net::Netrc) : Perl in a Nutshell, Chapter 16, Reference: lookup
LookupAccountName module : Learning Perl on Win32 Systems, B.4. Win32 Extensions
LookupAccountSID module : Learning Perl on Win32 Systems, B.4. Win32 Extensions
loop variables : Perl Cookbook, 4.4. Doing Something with Every Element in a List
loops
  Learning Perl, 9.1. The last Statement
  Perl in a Nutshell, 4.3.1. Conditionals and Loops
  Programming Perl, 1.6.2. Iterative (Looping) Constructs
  Programming Perl, 2.6.4. Loop Statements
  Programming Perl, 8.2.1. Universal Blunders
  Programming Perl, 8.4. Programming with Style
  endless/infinite
    Learning Perl, 4.3. The while/until Statement
    Learning Perl, 9.3. The redo Statement
    Learning Perl on Win32 Systems, 4.3. The while/until Statement
    Learning Perl on Win32 Systems, 9.3. The redo Statement
    Programming Perl, 2.6.4.2. For loops
  eval function within : Programming Perl, 8.3.1. Time Efficiency
  iterating scripts over filenames : Perl in a Nutshell, 3.2. Command-Line Options
  labels for : Programming Perl, 2.6.4.4. Loop control
  last operator
    Learning Perl, 9.1. The last Statement
    Programming Perl, 3.2.81. last
  local() and : Learning Perl, 8.5. Private Variables in Functions
  nested, exiting from : Learning Perl, 9.4. Labeled Blocks
  next operator : Programming Perl, 3.2.99. next
  redo operator and : Programming Perl, 3.2.120. redo
  reset function and : Programming Perl, 3.2.124. reset
  running time for code in : Programming Perl, 7.2.4. Benchmark - Check and Compare Running Times of Code
low-level socket access functions : Perl in a Nutshell, 5.1. Perl Functions by Category
lower() (Canvas) : Perl in a Nutshell, 18.12.3. Canvas Methods
lowercase program (example) : Perl Cookbook, 7.7. Writing a Filter
lowercase, converting to/from : (see case/capitalization)
lpa() (Net::Netrc) : Perl in a Nutshell, Chapter 16, Reference: lpa
lpr command, examples of : Learning Perl, 14.3. Using Processes as Filehandles
ls() (Net::FTP) : Perl in a Nutshell, Chapter 16, Reference: ls
lst program : Perl Cookbook, 9.12. Program: lst
lstat()
  (see also stat())
  Learning Perl, 10.6. The stat and lstat Functions
  Perl in a Nutshell, Chapter 5, Reference: lstat
  Programming Perl, 3.2.90. lstat
lt (less-than) operator
  Learning Perl, 2.4.2. Operators for Strings
  Perl in a Nutshell, 4.5.4.1. Relational operators
lvaluable functions : Perl Cookbook, 1.1. Accessing Substrings
lvalues
  Learning Perl on Win32 Systems, 3.4.1. Assignment
  Programming Perl, 2.3.1. Variables
LWP library
  Learning Perl, 19.10.3. Web Automation with LWP
  Perl in a Nutshell, 17. The LWP Library
  HTML modules : Perl in a Nutshell, 17.4. The HTML Module
    HTML::Element : Perl in a Nutshell, 17.4.2. HTML::Element
    HTML::FormatPS : Perl in a Nutshell, 17.4.4. HTML::FormatPS
    HTML::FormatText : Perl in a Nutshell, 17.4.5. HTML::FormatText
    HTML::Parser : Perl in a Nutshell, 17.4.1. HTML::Parser
    HTML::TreeBuilder : Perl in a Nutshell, 17.4.3. HTML::TreeBuilder
  HTTP modules
    HTTP::Cookies : Perl in a Nutshell, 17.3.6. HTTP::Cookies
    HTTP::Cookies::Netscape : Perl in a Nutshell, 17.3.6.1. HTTP::Cookies::Netscape
    HTTP::Daemon : Perl in a Nutshell, 17.3.7. HTTP::Daemon
    HTTP::Daemon::ClientConn : Perl in a Nutshell, 17.3.7.1. HTTP::Daemon::ClientConn methods
    HTTP::Date : Perl in a Nutshell, 17.3.5. HTTP::Date
    HTTP::Headers : Perl in a Nutshell, 17.3.3. HTTP::Headers
    HTTP::Message : Perl in a Nutshell, 17.3.8. HTTP::Message
    HTTP::Request
      Perl in a Nutshell, 17.1. LWP Overview
      Perl in a Nutshell, 17.3.1. HTTP::Request
    HTTP::Response
      Perl in a Nutshell, 17.1. LWP Overview
      Perl in a Nutshell, 17.3.2. HTTP::Response
    HTTP::Status : Perl in a Nutshell, 17.3.4. HTTP::Status
  LWP modules : Perl Cookbook, 20.0. Introduction
    extracting HTML tags : Perl Cookbook, 20.6. Extracting or Removing HTML Tags
    LWP::Debug module : Perl in a Nutshell, 17.2. The LWP Modules
    LWP::Heuristic module : Perl Cookbook, 20.1. Fetching a URL from a Perl Script
    LWP::MediaTypes module : Perl in a Nutshell, 17.2. The LWP Modules
    LWP::Protocol module : Perl in a Nutshell, 17.2. The LWP Modules
    LWP::Request module : Perl Cookbook, 20.1. Fetching a URL from a Perl Script
    LWP::Response module : Perl Cookbook, 20.1. Fetching a URL from a Perl Script
    LWP::RobotUA module
      Perl Cookbook, 20.11. Creating a Robot
      Perl in a Nutshell, 17.2. The LWP Modules
      Perl in a Nutshell, 17.2.1. LWP::RobotUA sections
    LWP::Simple module
      Perl Cookbook, 20.1. Fetching a URL from a Perl Script
      Perl Cookbook, 20.10. Mirroring Web Pages
      Perl in a Nutshell, 17.2. The LWP Modules
      Perl in a Nutshell, 17.2.2. LWP::Simple
    LWP::UserAgent module
      Perl Cookbook, 20.1. Fetching a URL from a Perl Script
      Perl in a Nutshell, 17.1. LWP Overview
      Perl in a Nutshell, 17.2. The LWP Modules
      Perl in a Nutshell, 17.2.3. LWP::UserAgent
  URI modules : Perl in a Nutshell, 17.5. The URI Module
    URI::Escape : Perl in a Nutshell, 17.5. The URI Module
    URI::Heuristic : Perl in a Nutshell, 17.5. The URI Module
    URI::URL : Perl in a Nutshell, 17.5.2. URI::URL

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