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Index: O

o command (CPAN.pm) : Perl in a Nutshell, Chapter 2, Reference: o
O command (debugger)
Perl in a Nutshell, Chapter 6, Reference: O
Programming Perl, 8.1.1. Debugger Commands
-o 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
-O 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
/o modifier : Programming Perl, 2.4.2. Pattern-Matching Operators
O module : Perl in a Nutshell, 8.115. O
-O option (dprofpp) : Perl in a Nutshell, 6.5. The Perl Profiler
-o option (perlcc) : Perl in a Nutshell, 3.4. The Perl Compiler
O_ flags : Perl Cookbook, 7.1. Opening a File
O_NONBLOCK option : Perl Cookbook, 7.14. Doing Non-Blocking I/O
O_NDELAY option : Advanced Perl Programming, 12.3.3. Nonblocking Filehandles
object-oriented programming (OOP)
Advanced Perl Programming, 7.1. OO: An Introduction
Perl Cookbook, 13.0. Introduction
Learning Perl, 19.8.1. Object-Oriented Programming in Perl
Perl in a Nutshell, 7.3. Object-Oriented Perl
Programming Perl, 5.3.1. Brief Refresher on Object-Oriented Programming
Programming Perl, 5.5.1. Object-Oriented Scaling Tips
inheritance : (see inheritance)
other languages and : Advanced Perl Programming, 7.5.1. Tcl
polymorphism : Advanced Perl Programming, 7.2.4. The Need for Polymorphism
objects
Advanced Perl Programming, 7.2. Objects in Perl
Advanced Perl Programming, 20.2.1. Perl Objects
Perl Cookbook, 13.0. Introduction
Perl in a Nutshell, 7.3. Object-Oriented Perl
Programming Perl, 5.3. Objects
Programming Perl, 5.5.9. Class Context and the Object
associations between : Advanced Perl Programming, 11.2.7. Object Associations
attributes of
Advanced Perl Programming, 7.2.8. Accessor Methods
Advanced Perl Programming, 7.2.1. Attributes
Advanced Perl Programming, 8.1. Efficient Attribute Storage
Perl Cookbook, 13.0. Introduction
Perl Cookbook, 13.3. Managing Instance Data
inheritance and : Perl Cookbook, 13.12. Solving the Data Inheritance Problem
blessing : Programming Perl, 3.2.9. bless
CGI programs and : Learning Perl, 19.8.1. Object-Oriented Programming in Perl
classes : Programming Perl, 5. Packages, Modules, and Object Classes
cloning parent objects : Perl Cookbook, 13.6. Cloning Objects
closures
Advanced Perl Programming, 4.4.3. Closures Versus Objects
Advanced Perl Programming, 20.3.5.4. Objects versus closures
Perl Cookbook, 11.7. Using Closures Instead of Objects
constructors : (see constructors)
delegation : Advanced Perl Programming, 8.2. Delegation
destroying
Advanced Perl Programming, 7.2.7. Object Destruction
Perl Cookbook, 13.0. Introduction
Perl Cookbook, 13.2. Destroying an Object
determining subclass membership : Perl Cookbook, 13.8. Determining Subclass Membership
encapsulating : (see encapsulation)
faster : Advanced Perl Programming, 20.7. A Peek into the Future
functions for : Perl in a Nutshell, 5.1. Perl Functions by Category
identity of : Advanced Perl Programming, 11.2.6. Object Identity
instance vs. class methods : Perl in a Nutshell, 7.4. Object Syntax
IO objects : Advanced Perl Programming, 12.5. IO Objects and Filehandles
managing instance data : Perl Cookbook, 13.3. Managing Instance Data
methods
Perl Cookbook, 13.0. Introduction
Learning Perl, 19.8.1. Object-Oriented Programming in Perl
Programming Perl, 4.3.4. Using Object Methods
Programming Perl, 7.2.11. DirHandle - Supply Object Methods for Directory Handles
for filehandles : Programming Perl, 7.2.33. FileHandle - Supply Object Methods for Filehandles
pointers : Advanced Perl Programming, 20.3.1.3. SVs and object pointers
references : Advanced Perl Programming, 7.2.2. Unique Identity
syntax of : Advanced Perl Programming, B.5. Objects
tied objects : Perl Cookbook, 13.15. Creating Magic Variables with tie
uniquess of : Advanced Perl Programming, 11.2.8. Uniqueness of Objects in Memory
ObjectTemplate library
Advanced Perl Programming, 8.1.1. ObjectTemplate: Attribute Storage Using Arrays
Advanced Perl Programming, 11.1. Adaptor: An Introduction
obscure biblical reference : Learning Perl, 15.5. Transliteration
obtaining Perl
modules
Perl in a Nutshell, 2.2. How Is CPAN Organized?
Perl in a Nutshell, 2.4. Getting and Installing Modules
source code
Perl in a Nutshell, 2. Installing Perl
Programming Perl, How to Get Perl
oct()
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: oct
Programming Perl, 3.2.101. oct
octal characters
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, 3.2.101. oct
specifying $/ as : Programming Perl, 6.1.2. Switches
OCX controls : Learning Perl on Win32 Systems, 19.1. Introduction to OLE Automation
ODBC module
Advanced Perl Programming, 10.4.2. Win32::ODBC
Learning Perl on Win32 Systems, B.4. Win32 Extensions
Learning Perl on Win32 Systems, 17.6. Win32 Database Interfaces
ODBC specification : Advanced Perl Programming, 10.4. Relational Databases
ODBM_File module
Perl in a Nutshell, 8.116. ODBM_File
Programming Perl, 7.2.1. AnyDBM_File - Provide Framework for Multiple DBMs
Programming Perl, 7.2.47. ODBM_File - Tied Access to ODBM Files
offsets
for m// successes : Programming Perl, 3.2.109. pos
read function : Programming Perl, 3.2.116. read
seek function : Programming Perl, 3.2.132. seek
-offvalue option
Checkbutton widget : Perl in a Nutshell, 18.5. The Checkbutton Widget
Menubutton widget : Perl in a Nutshell, 18.14.1. Menu Item Options
$OFMT ($#) variable
Learning Perl, 3.4.2. Array Element Access
Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.3.4. List Values and Arrays
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 6.4.2.2. a2p
$OFS ($,) variable
Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
-ok option (perlbug) : Perl in a Nutshell, 6.6. The perlbug Program
-okay option (perlbug) : Perl in a Nutshell, 6.6. The perlbug Program
OLE automation : Perl in a Nutshell, 19.18. OLE Automation
OLE module
Learning Perl on Win32 Systems, A.18. Chapter 19, OLE Automation
Learning Perl on Win32 Systems, B.4. Win32 Extensions
Learning Perl on Win32 Systems, 19.2. Creating Automation Objects
OLEDB : Learning Perl on Win32 Systems, 19.3.1. Data-Access Objects
one-liners : Programming Perl, 1.3.1. How to Do It
one-to-many associations : Advanced Perl Programming, 11.2.7. Object Associations
-onvalue option
Checkbutton widget : Perl in a Nutshell, 18.5. The Checkbutton Widget
Menubutton widget : Perl in a Nutshell, 18.14.1. Menu Item Options
OOP : (see object-oriented programming (OOP))
Opcode module : Perl in a Nutshell, 8.117. Opcode
opcodes : Advanced Perl Programming, 20.2.2. Translator
open()
(see also processes)
Advanced Perl Programming, 3.4. Filehandles, Directory Handles, and Formats
Perl Cookbook, 7.0. Introduction
Perl Cookbook, 7.1. Opening a File
Perl Cookbook, 16.10. Communicating Between Related Processes
Learning Perl, 1.5.10. Moving the Secret Word List into a Separate File
Learning Perl, 1.5.17. The Final Programs
Learning Perl, 10.2. Opening and Closing a Filehandle
Learning Perl, 19.8.2. Objects in CGI.pm
Learning Perl on Win32 Systems, 1.6.10. Moving the Secret Word List into a Separate File
Learning Perl on Win32 Systems, 1.6.17. The Final Programs
Learning Perl on Win32 Systems, 10.2. Opening and Closing a Filehandle
Perl in a Nutshell, Chapter 5, Reference: open
Perl in a Nutshell, 4.9. Filehandles
Programming Perl, 3.2.102. open
Programming Perl, 6.2.2.1. Anonymous pipes
Programming Perl, 7.2.33. FileHandle - Supply Object Methods for Filehandles
$. and : Programming Perl, 3.2.18. close
caching open filehandles : Perl Cookbook, 7.17. Caching Open Output Filehandles
document object (PerlScript) : Perl in a Nutshell, 20.1.1.1. Document methods
examples of
Learning Perl, A.9. Chapter 10, Filehandles and File Tests
Learning Perl, 1.5.17. The Final Programs
Learning Perl, 11.3. Invoking a Format
Learning Perl on Win32 Systems, A.9. Chapter 10, Filehandles and File Tests
Learning Perl on Win32 Systems, 11.3. Invoking a Format
fileno function and : Programming Perl, 3.2.38. fileno
filtering output : Perl Cookbook, 16.5. Filtering Your Own Output
Mail::Folder module : Perl in a Nutshell, Chapter 14, Reference: open
Mail::Mailer module : Perl in a Nutshell, Chapter 14, Reference: open
Mail::Send module
Perl in a Nutshell, Chapter 14, Reference: open
Perl in a Nutshell, 14.2.2. Better Header Control with Mail::Send
plus sign and : Learning Perl, 17.4. Fixed-Length Random Access Databases
reading from other programs : Perl Cookbook, 16.4. Reading or Writing to Another Program
strange filenames with : Perl Cookbook, 7.2. Opening Files with Unusual Filenames
vertical bar in
Learning Perl, 1.5.12. Warning Someone When Things Go Astray
Learning Perl, 14.3. Using Processes as Filehandles
Learning Perl on Win32 Systems, 1.6.12. Warning Someone When Things Go Astray
Learning Perl on Win32 Systems, 14.3. Using Processes as Filehandles
Win32::Mutex module : Perl in a Nutshell, 19.9. Win32::Mutex
Win32::Semaphore module : Perl in a Nutshell, 19.14. Win32::Semaphore
Open()
Learning Perl on Win32 Systems, 16.5. Opening and Reading Registry Values
Perl in a Nutshell, 19.13. Win32::Registry
open, magic : (see magic open)
open2() : Programming Perl, 7.2.39. IPC::Open2 - Open a Process for Both Reading and Writing
Open2, Open3 library modules : Programming Perl, 6.2.2.3. Bidirectional communication
open3() : Programming Perl, 7.2.40. IPC::Open3 - Open a Process for Reading, Writing, and Error Handling
opendir()
Advanced Perl Programming, 3.4. Filehandles, Directory Handles, and Formats
Perl Cookbook, 9.0. Introduction
Perl Cookbook, 9.5. Processing All Files in a Directory
Learning Perl, 12.4. Opening and Closing a Directory Handle
Learning Perl on Win32 Systems, 12.5. Reading a Directory Handle
Perl in a Nutshell, Chapter 5, Reference: opendir
Programming Perl, 3.2.103. opendir
Programming Perl, 7.2.11. DirHandle - Supply Object Methods for Directory Handles
examples of : Learning Perl, A.11. Chapter 12, Directory Access
globbing filenames : Perl Cookbook, 9.6. Globbing, or Getting a List of Filenames Matching a Pattern
opening
DBM database : Learning Perl, 17.2. Opening and Closing DBM Hashes
file descriptors : Perl Cookbook, 7.19. Opening and Closing File Descriptors by Number
files
Perl Cookbook, 7.1. Opening a File
Learning Perl, 10.2. Opening and Closing a Filehandle
FileCache module : Programming Perl, 7.2.32. FileCache - Keep More Files Open Than the System Permits
via low-level system call : Programming Perl, 3.2.165. sysopen
Registry values : Learning Perl on Win32 Systems, 16.5. Opening and Reading Registry Values
sockets : Programming Perl, 3.2.151. socket
openlog() : Programming Perl, 7.2.63. Sys::Syslog - Perl Interface to UNIX syslog(3) Calls
OpenRequest() (Win32::Internet) : Perl in a Nutshell, Chapter 19, Reference: OpenRequest
OpenURL() (Win32::Internet) : Perl in a Nutshell, Chapter 19, Reference: OpenURL
operands, defined : Learning Perl, 2.4. Scalar Operators
operating system : Programming Perl, Perl in a Nutshell
operator mask : Programming Perl, 7.2.51. Safe - Create Safe Namespaces for Evaluating Perl Code
operators
Learning Perl on Win32 Systems, 2.4. Scalar Operators
Perl in a Nutshell, 4.5. Operators
Programming Perl, 1.5. Operators
Programming Perl, 2.5. Operators
addition : Learning Perl, 2.4.1. Operators for Numbers
assignment : Learning Perl, 2.6. Scalar Operators and Functions
for associative arrays (hashes) : Learning Perl, 5.4. Hash Functions
associativity
Learning Perl, 2.4.3. Operator Precedence and Associativity
Programming Perl, 2.5. Operators
autodecrement : Learning Perl, 2.6.2. Autoincrement and Autodecrement
autogeneration : Programming Perl, 7.2.48.7. Autogeneration
autoincrement : Learning Perl, 2.6.2. Autoincrement and Autodecrement
definition of : Learning Perl, 2.4. Scalar Operators
division : Learning Perl, 2.4.1. Operators for Numbers
logical comparison : Learning Perl, 2.4.1. Operators for Numbers
multiplication : Learning Perl, 2.4.1. Operators for Numbers
overloading
Perl Cookbook, 13.14. Overloading Operators
Programming Perl, 7.2.48. overload - Overload Perl's Mathematical Operations
precedence of
Learning Perl, 2.4.3. Operator Precedence and Associativity
Programming Perl, 2.5. Operators
for scalar variables : Learning Perl, 2.6. Scalar Operators and Functions
string operators : Learning Perl, 2.4.2. Operators for Strings
subtraction : Learning Perl, 2.4.1. Operators for Numbers
undef and : Learning Perl, 2.9. The Undefined Value
ops module : Perl in a Nutshell, 8.118. ops
optimizing Perl
Advanced Perl Programming, 20.2.2.2. Compilation and code generation stages
Programming Perl, 8.3. Efficiency
Optionmenu widget (Perl/Tk) : Perl in a Nutshell, 18.16. The Optionmenu Widget
options : (see switches, Perl command-line)
-options option (Optionmenu) : Perl in a Nutshell, 18.16. The Optionmenu Widget
OR (^) operator
Perl in a Nutshell, 4.5.10. Bitwise Operators
Programming Perl, 2.5.13. Bitwise Operators
Programming Perl, 2.5.20. Logical and, or, not, and xor
Programming Perl, 8.2.3. Awk Traps
Programming Perl, 8.4. Programming with Style
OR (|) operator
Perl in a Nutshell, 4.5.10. Bitwise Operators
Programming Perl, 2.5.13. Bitwise Operators
OR (||) operator
Perl Cookbook, 1.2. Establishing a Default Value
Perl in a Nutshell, 4.5.9. Logical Operators
Programming Perl, 2.5.14. C-style Logical (Short Circuit) Operators
OR functionality in regular expressions : Perl Cookbook, 6.17. Expressing AND, OR, and NOT in a Single Pattern
Oracle module : Advanced Perl Programming, 10.4.1. DBI (Database Interface)
oraperl
Advanced Perl Programming, 10.4.1. DBI (Database Interface)
Perl in a Nutshell, 12.2. Design of DBI
ord()
Perl Cookbook, 1.4. Converting Between ASCII Characters and Values
Learning Perl, 16.2. Packing and Unpacking Binary Data
Perl in a Nutshell, Chapter 5, Reference: ord
Programming Perl, 3.2.104. ord
order : (see precedence)
oreobounce program (example) : Perl Cookbook, 19.8. Redirecting to a Different Location
-orient option
Scale widget : Perl in a Nutshell, 18.13. The Scale Widget
Scrollbar widget : Perl in a Nutshell, 18.9. The Scrollbar Widget
$ORS ($\) variable
Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 6.1.2. Switches
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
orthogonal (transparent) persistence
Advanced Perl Programming, 11. Implementing Object Persistence
Advanced Perl Programming, 11.2.1. Design Goals
Orwant, Jon : Perl in a Nutshell, 1.4.7. The Perl Journal
OS/2, Perl under : Learning Perl, 1.3. Availability
$OS_ERROR ($!) variable
Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
os_snipe program (example) : Perl Cookbook, 19.8. Redirecting to a Different Location
$OSNAME ($^O) variable
Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
Ousterhout, John : Advanced Perl Programming, The Case for Scripting
output
(see also filehandles)
(see also input)
Perl in a Nutshell, 5.1. Perl Functions by Category
Programming Perl, 1.4. Filehandles
checking file descriptors for : Programming Perl, 3.2.135. select (ready file descriptors)
controlling decimal places : Perl Cookbook, 13.14. Overloading Operators
controlling for other programs : Perl Cookbook, 16.8. Controlling Input and Output of Another Program
field separator : (see $ variables, $, variable)
filtering : Perl Cookbook, 16.5. Filtering Your Own Output
flushing : Perl Cookbook, 7.12. Flushing Output
formats for : Perl in a Nutshell, 4.10. Formats
gathering from programs : Perl Cookbook, 16.1. Gathering Output from a Program
pipes : Programming Perl, 6.2.2. Pipes
random access I/O : Perl Cookbook, 8.12. Using Random-Access I/O
record separator : (see $ variables, $\ variable)
selecting filehandles for : Programming Perl, 3.2.134. select (output filehandle)
test script : Programming Perl, 7.2.66.1. The test script output
writing to other programs : Perl Cookbook, 16.4. Reading or Writing to Another Program
output() : Perl Cookbook, 5.16. Program: dutree
$OUTPUT_AUTOFLUSH ($|) variable
Perl Cookbook, 7.0. Introduction
Perl Cookbook, 7.12. Flushing Output
Perl in a Nutshell, 4.4.6. Filehandle Special Variables
Programming Perl, 2.8.1. Format Variables
Programming Perl, 2.9.2. Per-Filehandle Special Variables
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
$OUTPUT_FIELD_SEPARATOR ($,) variable
Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
$OUTPUT_RECORD_SEPARATOR ($\) variable
Perl in a Nutshell, 4.4.1. Global Special Variables
Programming Perl, 2.9.3. Global Special Variables
Programming Perl, 6.1.2. Switches
Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
OutputCP() (Win32::Console) : Perl in a Nutshell, Chapter 19, Reference: OutputCP
=over command (pod) : Perl in a Nutshell, Chapter 4, Reference: =over
overload module
Perl in a Nutshell, 8.119. overload
Programming Perl, 7.2.48. overload - Overload Perl's Mathematical Operations
Overloaded() : Programming Perl, 7.2.48.9. Public functions
overloading
Perl Cookbook, 13.14. Overloading Operators
Programming Perl, 2.3.3.1. Scalar and list context
Programming Perl, 7.2.48.8. Run-time overloading
overridedirect() (Frame widget) : Perl in a Nutshell, 18.18.1. Toplevel Methods
overriding
base class methods
Advanced Perl Programming, 7.2.6.1. Overriding base classes
Programming Perl, 5.5.6. Overriding Base Class Methods
functions
Perl Cookbook, 12.11. Overriding Built-In Functions
Programming Perl, 5.2.2. Overriding Built-in Functions
MakeMaker methods : Programming Perl, 7.2.18.10. Overriding MakeMaker methods
methods : Perl Cookbook, 13.10. Accessing Overridden Methods
signal handlers : Perl Cookbook, 16.16. Temporarily Overriding a Signal Handler
overview_fmt() (Net::NNTP) : Perl in a Nutshell, Chapter 15, Reference: overview_fmt
ownership, file
Learning Perl, 13.6. Modifying Ownership
Programming Perl, 3.2.15. chown


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