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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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