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Index: O
- o command (CPAN.pm): 2.4.4. Installing Modules with the CPAN Module (Perl in a Nutshell)
- O command (Perl debugger): 6.2. Debugger Commands (Perl in a Nutshell)
- -o (effective UID) file test: 3.10. Named Unary and File Test Operators (Programming Perl)
- -O file test operator: 4.5.8. File Test Operators (Perl in a Nutshell)
- O_ flags: 7.1.3. Discussion (Perl Cookbook)
- 7.20.2. Solution (Perl Cookbook)
- /o modifier
- O module: 8.165. O (Perl in a Nutshell)
- 18.4. Compiler Backends (Programming Perl)
- 18.6. Code Development Tools (Programming Perl)
- 32.1.19. Perl Compiler and Code Generator (Programming Perl)
- -O option (dprofpp): 6.5. The Perl Profiler (Perl in a Nutshell)
- -o option (perlcc): 3.4. The Perl Compiler (Perl in a Nutshell)
- /o pattern modifier: 5.2.1. Pattern Modifiers (Programming Perl)
- 5.2.1. Pattern Modifiers (Programming Perl)
- 5.2.2. The m// Operator (Matching) (Programming Perl)
- 5.2.3. The s/// Operator (Substitution) (Programming Perl)
- o pattern match modifier: 4.6.1. Pattern-Matching Operators (Perl in a Nutshell)
- /o pattern-matching modifier: 6.10.2. Solution (Perl Cookbook)
- -O (real UID) file test: 3.10. Named Unary and File Test Operators (Programming Perl)
- OASIS group: 22.. Schemas (Perl Cookbook)
- object
- object attributes: 13.3.1. Problem (Perl Cookbook)
- object methods: 13.. Some Notes on Object Terminology (Perl Cookbook)
- object-oriented modules: 11.1. Using Modules (Programming Perl)
- object-oriented (OO) programming: B.20.2. Object-Oriented Programming (Learning Perl)
- object-oriented programming: 13.. Under the Hood (Perl Cookbook)
- 13.. Some Notes on Object Terminology (Perl Cookbook)
- 7.3. Object-Oriented Perl (Perl in a Nutshell)
- 8. Introduction to Objects (Learning Perl Objects, References and Modules)
- 10. Packages (Programming Perl)
- 12.1. Brief Refresher on Object-Oriented Lingo (Programming Perl)
- abstraction in: 12.3. Method Invocation (Programming Perl)
- modules for file, directory, and IPC access: 32.1.5. Filehandle, Directory Handle, and Stream I/O Utilities (Programming Perl)
- Perl modules for: 22.1. The CPAN modules Directory (Programming Perl)
- portable filename operations: 32.1.4. Filenames, Filesystems, and File Locking (Programming Perl)
- references in Perl, emulating: 10. Packages (Programming Perl)
- objects: 13.. Under the Hood (Perl Cookbook)
- 7.3. Object-Oriented Perl (Perl in a Nutshell)
- 1.2.1.3. Complexities (Programming Perl)
- 12. Objects (Programming Perl)
- Glossary (Programming Perl)
- bless operator and: 9.1. A Horse Is a Horse, of Course of Course—or Is It? (Learning Perl Objects, References and Modules)
- as blessed references: 9.8. More Interesting Instances (Learning Perl Objects, References and Modules)
- blessing: 3.2. The Arrow Operator (Programming Perl)
- 29.2.7. bless (Programming Perl)
- class data, managing: 12.8. Managing Class Data (Programming Perl)
- cloning parent objects: 13.6.1. Problem (Perl Cookbook)
- closures as: 11.7.1. Problem (Perl Cookbook)
- constructing: 13.. Methods (Perl Cookbook)
- 13.1.1. Problem (Perl Cookbook)
- constructors: 8.2.3. Object Constructors (Programming Perl)
- creating: 9.4. How to Build a Horse (Learning Perl Objects, References and Modules)
- destroying: 13.. Methods (Perl Cookbook)
- 13.2.1. Problem (Perl Cookbook)
- destruction of: 10. Object Destruction (Learning Perl Objects, References and Modules)
- destruction of (global), controlling: 19.2. Environment Variables (Programming Perl)
- determining subclass membership: 13.9.1. Problem (Perl Cookbook)
- encapsulation of: 9.11. Don't Look Inside the Box (Learning Perl Objects, References and Modules)
- filehandles and: 11.7. References to Filehandles (Learning Perl Objects, References and Modules)
- functions dealing with: 29.1. Perl Functions by Category (Programming Perl)
- functions for: 5.1. Perl Functions by Category (Perl in a Nutshell)
- indirect (see indirect objects)
- inheritance, through @ISA array: 12.5.1. Inheritance Through @ISA (Programming Perl)
- instance data, managing: 12.7. Managing Instance Data (Programming Perl)
- 12.7.1. Field Declarations with use fields (Programming Perl)
- generating accesors with closures: 12.7.4. Generating Accessors with Closures (Programming Perl)
- generating accessors with autoloading: 12.7.3. Generating Accessors with Autoloading (Programming Perl)
- generating classes with Class::Struct: 12.7.2. Generating Classes with Class::Struct (Programming Perl)
- new features, Perl 5.6: 12.7.6. New Tricks (Programming Perl)
- private objects, using closures for: 12.7.5. Using Closures for Private Objects (Programming Perl)
- instance destructors: 12.6. Instance Destructors (Programming Perl)
- instance vs. class methods: 7.4. Object Syntax (Perl in a Nutshell)
- instances and: 9.1. A Horse Is a Horse, of Course of Course—or Is It? (Learning Perl Objects, References and Modules)
- managing class data: 13.4.1. Problem (Perl Cookbook)
- managing instance data: 13.3.1. Problem (Perl Cookbook)
- methods, references to: 8.3.7. Closures (Programming Perl)
- 8.3.7. Closures (Programming Perl)
- (see also closures)
- Perl object system: 12.2. Perl's Object System (Programming Perl)
- references to, in scalars: 1.2.1.1. Singularities (Programming Perl)
- storing within other objects vs. inheritance: 12.6. Instance Destructors (Programming Perl)
- stringifying: 8.3.6. Other Tricks You Can Do with Hard References (Programming Perl)
- structure considerations: 9.8. More Interesting Instances (Learning Perl Objects, References and Modules)
- testing with isa and can methods: 11.2. Testing Your Objects for Good Behavior (Learning Perl Objects, References and Modules)
- 11.2. Testing Your Objects for Good Behavior (Learning Perl Objects, References and Modules)
- tied objects: 13.15.1. Problem (Perl Cookbook)
- tied variables, underlying: 14. Tied Variables (Programming Perl)
- Objects style (XML::Parser): 13.4. XML::Parser Styles (Perl in a Nutshell)
- obtaining Perl modules: 2.2. How Is CPAN Organized? (Perl in a Nutshell)
- 2.4. Getting and Installing Modules (Perl in a Nutshell)
- obtaining Perl source code: 2. Installing Perl (Perl in a Nutshell)
- oct( ): 5. Function Reference (Perl in a Nutshell)
- octal
- characters: 2.6.1. Numeric Literals (Programming Perl)
- literals: 2.2.4. Nondecimal Integer Literals (Learning Perl)
- numbers
- converting: 2.15.1. Problem (Perl Cookbook)
- values, working with symbolic file permissions instead: 9.11.1. Problem (Perl Cookbook)
- 29.2.103. oct (Programming Perl)
- characters, representing: 15.1. Building Character (Programming Perl)
- characters, specifying with: 5.3.2. Specific Characters (Programming Perl)
- specifying $/ as: 19.1.3. Switches (Programming Perl)
- octets (see also bytes)
- ODBC Extension: 24. ODBC Extension for Win32 (Perl in a Nutshell)
- ODBM_File module: 8.166. ODBM_File (Perl in a Nutshell)
- offsets: Glossary (Programming Perl)
- -offvalue option
- $OFMT ($#) variable: 4.4.1. Global Special Variables (Perl in a Nutshell)
- $OFS ($,) variable: 4.4.1. Global Special Variables (Perl in a Nutshell)
- ok function (Test::Simple): 14.2. Writing Tests with Test::Simple (Learning Perl Objects, References and Modules)
- 14.6. Testing Things That Write to STDOUT and STDERR (Learning Perl Objects, References and Modules)
- -ok option (perlbug): 6.6. The perlbug Program (Perl in a Nutshell)
- -okay option (perlbug): 6.6. The perlbug Program (Perl in a Nutshell)
- .old files, renaming to .new files: 13.2. Renaming Files (Learning Perl)
- OLE automation: 23. OLE Automation (Perl in a Nutshell)
- OLE, Perl modules for: 22.1. The CPAN modules Directory (Programming Perl)
- on_action( ) (SOAP::Lite): 14.2.1. SOAP::Lite Methods (Perl in a Nutshell)
- on_debug( ) (SOAP::Lite): 14.2.1. SOAP::Lite Methods (Perl in a Nutshell)
- one-liners: 1.3.1. How to Do It (Programming Perl)
- Glossary (Programming Perl)
- on_fault( ) (SOAP::Lite): 14.2.1. SOAP::Lite Methods (Perl in a Nutshell)
- on_nonserialized( ) (SOAP::Lite): 14.2.1. SOAP::Lite Methods (Perl in a Nutshell)
- O_NONBLOCK option: 7.20.2. Solution (Perl Cookbook)
- -onvalue option
- OO (object-oriented) modules
- exporting: 13.3. The Prototype Module Itself (Learning Perl Objects, References and Modules)
- exporting and: 12.10. Exporting in a Primarily OO Module (Learning Perl Objects, References and Modules)
- non-OO versus: 12.5. The Differences Between OO and Non-OO Modules (Learning Perl Objects, References and Modules)
- Test::More module: 14.3. Writing Tests with Test::More (Learning Perl Objects, References and Modules)
- OO (object-oriented) programming: B.20.2. Object-Oriented Programming (Learning Perl)
- OOP (object-oriented programming)
- File::Spec module: 12.3. Sample Object-Oriented Interface: File::Spec (Learning Perl Objects, References and Modules)
- inheritance structures and: A.7.2. Exercise 2 (Section 8.11.2) (Learning Perl Objects, References and Modules)
- overview: 8. Introduction to Objects (Learning Perl Objects, References and Modules)
- versus non-OOP: 12.5. The Differences Between OO and Non-OO Modules (Learning Perl Objects, References and Modules)
- Opcode module: 8.167. Opcode (Perl in a Nutshell)
- 32.1.12. Authentication, Security, and Encryption (Programming Perl)
- opcodes: 18.2. Compiling Your Code (Programming Perl)
- 18.3. Executing Your Code (Programming Perl)
- 21.1. How Perl Works (Programming Perl)
- open( ): 5. Function Reference (Perl in a Nutshell)
- DirHandle module: 8.59. DirHandle (Perl in a Nutshell)
- Mail::Folder module: 16.2.3. Handle Folders with Mail::Folder (Perl in a Nutshell)
- Mail::Mailer module: 16.2.1. Send Email with Mail::Mailer (Perl in a Nutshell)
- Mail::Send module: 16.2.2. Better Header Control with Mail::Send (Perl in a Nutshell)
- 16.2.2. Better Header Control with Mail::Send (Perl in a Nutshell)
- PerlIO: 4.9.1. Perl 5.8 and PerlIO (Perl in a Nutshell)
- Win32::Mutex module: 22.9. Win32::Mutex (Perl in a Nutshell)
- Win32::Semaphore module: 22.16. Win32::Semaphore (Perl in a Nutshell)
- 16.10.3. Discussion (Perl Cookbook)
- (see also processes)
- caching open filehandles: 7.7.2. Solution (Perl Cookbook)
- creating temporary files: 7.11.3. Discussion (Perl Cookbook)
- file access modes: 7.. I/O Operations (Perl Cookbook)
- file descriptors, creating aliases for: 7.10.3. Discussion (Perl Cookbook)
- filehandles: 7.1.2. Solution (Perl Cookbook)
- filtering output: 16.5.2. Solution (Perl Cookbook)
- magic open: 8.25. Program: tctee (Perl Cookbook)
- reading from other programs: 16.4.2. Solution (Perl Cookbook)
- unusual filenames: 7.2.2. Solution (Perl Cookbook)
- 16.3. Fixed-length Random-access Databases (Learning Perl)
- 1.4. Filehandles (Programming Perl)
- 16.3.1. Anonymous Pipes (Programming Perl)
- 29.2.104. open (Programming Perl)
- converting file descriptor to filehandle: 16.2.2. Passing Filehandles (Programming Perl)
- $. and: 29.2.16. close (Programming Perl)
- fileno function and: 29.2.38. fileno (Programming Perl)
- fork-open: 29.2.104. open (Programming Perl)
- forking open: 16.3.2. Talking to Yourself (Programming Perl)
- modes in three-argument form: 29.2.104. open (Programming Perl)
- piped
- piped (two-argument form): 29.2.104. open (Programming Perl)
- for pipes, security risks posed by: 23.1.2. Cleaning Up Your Environment (Programming Perl)
- pipes, opening with: 16.3.1. Anonymous Pipes (Programming Perl)
- portability of: 25.5. Interprocess Communication (IPC) (Programming Perl)
- Open2, Open3 library modules: 16.3.3. Bidirectional Communication (Programming Perl)
- open operator: 11.2. Opening a Filehandle (Learning Perl)
- open pragma: 8.19.2. Solution (Perl Cookbook)
- open source software: Glossary (Programming Perl)
- Open( ) (Win32::Registry): 22.15. Win32::Registry (Perl in a Nutshell)
- opendir( ): 5. Function Reference (Perl in a Nutshell)
- opening
- OpenLDAP: 19. Lightweight Directory Access with Net::LDAP (Perl in a Nutshell)
- OpenRequest( ) (Win32::Internet): 22.7.3. HTTP Functions (Perl in a Nutshell)
- OpenSSL libraries: 20.16.3. Discussion (Perl Cookbook)
- OpenURL( ) (Win32::Internet): 22.7.1. General Internet Methods (Perl in a Nutshell)
- operand stack: 18.3. Executing Your Code (Programming Perl)
- operating system: 0.1. The Pursuit of Happiness (Programming Perl)
- operating system name: 28.2. Special Variables in Alphabetical Order (Programming Perl)
- operating systems: Glossary (Programming Perl)
- #! technique, simulating on non-Unix systems: 19.1.1. #! and Quoting on Non-Unix Systems (Programming Perl)
- command interpreters for: 19.1. Command Processing (Programming Perl)
- flock support on: 16.2.1. File Locking (Programming Perl)
- fork operator, support for: 16.2.2. Passing Filehandles (Programming Perl)
- GUIs, relying on: 25.4. System Interaction (Programming Perl)
- interfaces to, manipulating: 32.1.7. Operating System Interfaces (Programming Perl)
- invoking interpreters with #! line: 19.1. Command Processing (Programming Perl)
- module names, translating to directory names: 11.1. Using Modules (Programming Perl)
- newlines, variations in: 25.1. Newlines (Programming Perl)
- perl interpreter, starting on: 1.3.1. How to Do It (Programming Perl)
- Perl modules for: 22.1. The CPAN modules Directory (Programming Perl)
- Perl ports to: 22. CPAN (Programming Perl)
- Perl program portability: 25. Portable Perl (Programming Perl)
- signal reliability on: 16.1.2. Reaping Zombies (Programming Perl)
- signals and default behaviors of: 16.1. Signals (Programming Perl)
- sockets, support for: 16.5. Sockets (Programming Perl)
- threading libraries: 17.2. The Thread Model (Programming Perl)
- operations, contexts, evaluation in: 2.7.1. Scalar and List Context (Programming Perl)
- operator: 2.8. Getting User Input (Learning Perl)
- operator precedence (see precedence)
- operators: 4.5. Operators (Perl in a Nutshell)
- 1.5. Operators (Programming Perl)
- 3. Unary and Binary Operators (Programming Perl)
- Glossary (Programming Perl)
- access, restricting with Safe module: 23.3.1.2. Restricting operator access (Programming Perl)
- assignment operators: 1.5.3. Assignment Operators (Programming Perl)
- associativity and: 2.6.2. Operator Precedence and Associativity (Learning Perl)
- associativity of: 3. Unary and Binary Operators (Programming Perl)
- C language, missing in Perl: 3.21. C Operators Missing from Perl (Programming Perl)
- comparison: 2.6.3. Comparison Operators (Learning Perl)
- 15.4. Advanced Sorting (Learning Perl)
- line input: 7.. I/O Operations (Perl Cookbook)
- 8.. Basic Operations (Perl Cookbook)
- logical operators: 1.5.5. Logical Operators (Programming Perl)
- matching and substitution: 5. Pattern Matching (Programming Perl)
- numeric: 2.2.5. Numeric Operators (Learning Perl)
- overload module for: B.22. Operator Overloading (Learning Perl)
- overloadable: 13.3. Overloadable Operators (Programming Perl)
- Glossary (Programming Perl)
- arithmetic operators: 13.3. Overloadable Operators (Programming Perl)
- assignment operators: 13.3. Overloadable Operators (Programming Perl)
- bitwise operators: 13.3. Overloadable Operators (Programming Perl)
- circular references, problems with: 13.3. Overloadable Operators (Programming Perl)
- comparison operators: 13.3. Overloadable Operators (Programming Perl)
- conversion operators: 13.3. Overloadable Operators (Programming Perl)
- dereference operators: 13.3. Overloadable Operators (Programming Perl)
- iterative operator: 13.3. Overloadable Operators (Programming Perl)
- logical negation operator: 13.3. Overloadable Operators (Programming Perl)
- overloading: 13.14.1. Problem (Perl Cookbook)
- 3. Unary and Binary Operators (Programming Perl)
- 13. Overloading (Programming Perl)
- 32.1.1. Data Types (Programming Perl)
- pattern-matching: 5.2. Pattern-Matching Operators (Programming Perl)
- perlfunc manpage and: B.8. Other Operators and Functions (Learning Perl)
- perlop manpage and: B.8. Other Operators and Functions (Learning Perl)
- positions or lengths, switching to character positions: 15.2. Effects of Character Semantics (Programming Perl)
- precedence and: 2.6.2. Operator Precedence and Associativity (Learning Perl)
- precedence of: 1.5.1. Some Binary Arithmetic Operators (Programming Perl)
- quotes, syntactical similarity to: 1.2.1.1. Singularities (Programming Perl)
- quoting operators: 2.6.3. Pick Your Own Quotes (Programming Perl)
- scalar context, supplying to parameters: 1.2.1.1. Singularities (Programming Perl)
- string operators: 1.5.2. String Operators (Programming Perl)
- verbs as: 1.2.2. Verbs (Programming Perl)
- operators, for loop control: 4.4.4. Loop Control (Programming Perl)
- ops module: 8.168. ops (Perl in a Nutshell)
- 32.1.12. Authentication, Security, and Encryption (Programming Perl)
- optimizing
- option modifiers: 9.2. Option Modifiers (Learning Perl)
- option processing, Perl modules for: 32.1.3. Option, Argument, Parameter, and Configuration File Processing (Programming Perl)
- option processing, Perl modules for: 22.1. The CPAN modules Directory (Programming Perl)
- Optionmenu widget (Perl/Tk): 21.16. The Optionmenu Widget (Perl in a Nutshell)
- options (see switches, command-line)
- 19.1.3. Switches (Programming Perl)
- -options option (Optionmenu): 21.16. The Optionmenu Widget (Perl in a Nutshell)
- OR (||) operator: 3.14. C-Style Logical (Short-Circuit) Operators (Programming Perl)
- OR (|) operator, bitwise: 4.5.10. Bitwise Operators (Perl in a Nutshell)
- OR functionality in regular expressions: 6.18.1. Problem (Perl Cookbook)
- OR logical operator: 1.5.5. Logical Operators (Programming Perl)
- or operator: 3.14. C-Style Logical (Short-Circuit) Operators (Programming Perl)
- 3.20. Logical and, or, not, and xor (Programming Perl)
- 5.9.1. Letting Perl Do the Work (Programming Perl)
- 24.3. Programming with Style (Programming Perl)
- | (bitwise): 3.13. Bitwise Operators (Programming Perl)
- list operators, use with: 4.7. Global Declarations (Programming Perl)
- precedence, or vs. ||: 12.3.3. Syntactic Snafus with Indirect Objects (Programming Perl)
- or operator, vs. || operator: 1.2.3. Discussion (Perl Cookbook)
- or (OR) operator: 4.5.9. Logical Operators (Perl in a Nutshell)
- oraperl package: 12.2. Design of DBI (Perl in a Nutshell)
- ord( ): 5. Function Reference (Perl in a Nutshell)
- order (see precedence)
- ordered lists: 3. Introduction to References (Learning Perl Objects, References and Modules)
- -orient option
- ornaments option (debugger): 20.3.3. Debugger Options (Programming Perl)
- $ORS ($\) variable: 4.4.1. Global Special Variables (Perl in a Nutshell)
- OS/2 operating system
- OSBC
- $OS_ERROR: 28.2. Special Variables in Alphabetical Order (Programming Perl)
- $OS_ERROR ($!) variable: 4.4.1. Global Special Variables (Perl in a Nutshell)
- $OSNAME (see $^O variable)
- 28.2. Special Variables in Alphabetical Order (Programming Perl)
- $OSNAME ($^O) variable: 4.4.1. Global Special Variables (Perl in a Nutshell)
- our( ): 5. Function Reference (Perl in a Nutshell)
- our declarations: 2.5.1. Name Lookups (Programming Perl)
- our function: 4.8.1. Scoped Variable Declarations (Programming Perl)
- 4.8.2. Lexically Scoped Variables: my (Programming Perl)
- 29.2.107. our (Programming Perl)
- our variables: 8.5. A Few Notes About @ISA (Learning Perl Objects, References and Modules)
- out of memory errors: 28.2. Special Variables in Alphabetical Order (Programming Perl)
- outer( ): 10.16.3. Discussion (Perl Cookbook)
- outlaw $_ program: 13.15.4. Tie Example: Outlaw $_ (Perl Cookbook)
- outline programs: 11.16. Program: Outlines (Perl Cookbook)
- output: 6.4. Output to Standard Output (Learning Perl)
- 5.1. Perl Functions by Category (Perl in a Nutshell)
- 29.2.38. fileno (Programming Perl)
- (see also STDOUT filehandle)
- array and hash, changing style (debugger): 20.3.3. Debugger Options (Programming Perl)
- buffered: 6.4. Output to Standard Output (Learning Perl)
- capturing using backquotes: 14.4. Using Backquotes to Capture Output (Learning Perl)
- checking file descriptors for: 29.2.141. select (ready file descriptors) (Programming Perl)
- controlling decimal places: 13.14.5. Example: Overloaded FixNum Class (Perl Cookbook)
- controlling for other programs: 16.8.1. Problem (Perl Cookbook)
- currently selected channel: Glossary (Programming Perl)
- debugger, setting: 20.4. Unattended Execution (Programming Perl)
- field separator (see $, variable)
- files, open mode for: 29.2.104. open (Programming Perl)
- filtering: 16.5.1. Problem (Perl Cookbook)
- flushing: 7.19.1. Problem (Perl Cookbook)
- format output accumulator: 29.2.42. formline (Programming Perl)
- formats for: 4.12. Formats (Perl in a Nutshell)
- formatted with printf function: 6.5. Formatted Output with printf (Learning Perl)
- functions dealing with: 29.1. Perl Functions by Category (Programming Perl)
- gathering from programs: 16.1.1. Problem (Perl Cookbook)
- ioctl function: 29.2.77. ioctl (Programming Perl)
- pipes: 16.3. Pipes (Programming Perl)
- 16.3. Pipes (Programming Perl)
- bidirectional: 16.3.3. Bidirectional Communication (Programming Perl)
- filtering: 16.3.2. Talking to Yourself (Programming Perl)
- STDOUT as pipe to another program: 16.3.1. Anonymous Pipes (Programming Perl)
- tridirectional: 16.3.3. Bidirectional Communication (Programming Perl)
- random access I/O: 8.12.1. Problem (Perl Cookbook)
- record separator (see $\ variable)
- selecting filehandles for: 29.2.140. select (output filehandle) (Programming Perl)
- writing to other programs: 16.4.1. Problem (Perl Cookbook)
- XSUBs: 21.3.3. XSUB Input and Output (Programming Perl)
- output( ): 5.17. Program: dutree (Perl Cookbook)
- output filehandles: 1.4. Filehandles (Programming Perl)
- output filehandles;STDOUT: 1.4. Filehandles (Programming Perl)
- output record formats, declaring: 7. Formats (Programming Perl)
- $OUTPUT_AUTOFLUSH: 28.2. Special Variables in Alphabetical Order (Programming Perl)
- $OUTPUT_AUTOFLUSH ($|) variable: 4.4.6. Filehandle Special Variables (Perl in a Nutshell)
- OutputCP( ) (Win32::Console): 22.2. Win32::Console (Perl in a Nutshell)
- output_fh( ): 22.7.3. Discussion (Perl Cookbook)
- $OUTPUT_FIELD_SEPARATOR: 28.2. Special Variables in Alphabetical Order (Programming Perl)
- $OUTPUT_FIELD_SEPARATOR ($,) variable: 4.4.1. Global Special Variables (Perl in a Nutshell)
- output_file( ): 22.7.3. Discussion (Perl Cookbook)
- $OUTPUT_RECORD_SEPARATOR: 28.2. Special Variables in Alphabetical Order (Programming Perl)
- $OUTPUT_RECORD_SEPARATOR ($\\\\) variable: 4.4.1. Global Special Variables (Perl in a Nutshell)
- outputxml( ) (SOAP::Lite): 14.2.1. SOAP::Lite Methods (Perl in a Nutshell)
- =over command (pod): 4.13.1. Paragraph Tags (Perl in a Nutshell)
- overloading mathematical functions: 13.3. Overloadable Operators (Programming Perl)
- overload handlers: 13.2. Overload Handlers (Programming Perl)
- overload module: B.22. Operator Overloading (Learning Perl)
- 8.169. overload (Perl in a Nutshell)
- overloaded functions: 2.7.1. Scalar and List Context (Programming Perl)
- Overloaded (overload::Overloaded): 13.7. Public Overload Functions (Programming Perl)
- overloaded string constants, translating text with: 5.10.4. Defining Your Own Assertions (Programming Perl)
- overloading: 3. Unary and Binary Operators (Programming Perl)
- 13. Overloading (Programming Perl)
- Glossary (Programming Perl)
- autogeneration of: 13.3. Overloadable Operators (Programming Perl)
- circular references, avoiding: 13.3. Overloadable Operators (Programming Perl)
- constants: 13.6. Overloading Constants (Programming Perl)
- copy constructor (=): 13.4. The Copy Constructor (=) (Programming Perl)
- diagnostics: 13.10. Overloading Diagnostics (Programming Perl)
- functions for: 13.7. Public Overload Functions (Programming Perl)
- inheritance and: 13.8. Inheritance and Overloading (Programming Perl)
- nonmethod and fallback: 13.5. When an Overload Handler Is Missing (nomethod and fallback) (Programming Perl)
- overload module: 32.1.1. Data Types (Programming Perl)
- overload pragma: 13.1. The overload Pragma (Programming Perl)
- overloadable operators: 13.3. Overloadable Operators (Programming Perl)
- at run time: 13.9. Run-Time Overloading (Programming Perl)
- sorting and: 13.3. Overloadable Operators (Programming Perl)
- stringifying: 14.4.1. Filehandle-Tying Methods (Programming Perl)
- overloading, autogeneration of: 13.3. Overloadable Operators (Programming Perl)
- overloading operators: 13.14.1. Problem (Perl Cookbook)
- overridden methods: 13.11.1. Problem (Perl Cookbook)
- overridden methods, base class, invoking all: 12.5.3. UNIVERSAL: The Ultimate Ancestor Class (Programming Perl)
- overridedirect( ) (Frame widget): 21.18.1. Toplevel Methods (Perl in a Nutshell)
- overriding
- base class methods: 12.5.2. Accessing Overridden Methods (Programming Perl)
- built-in functions: 12.12.1. Problem (Perl Cookbook)
- functions: 11.3. Overriding Built-in Functions (Programming Perl)
- methods: 8.6. Overriding the Methods (Learning Perl Objects, References and Modules)
- signal handlers: 16.16.1. Problem (Perl Cookbook)
- superclass methods: 10.2. Beating a Dead Horse (Learning Perl Objects, References and Modules)
- 10.2. Beating a Dead Horse (Learning Perl Objects, References and Modules)
- UNIVERSAL class methods: 11.1. UNIVERSAL Methods (Learning Perl Objects, References and Modules)
- overview_fmt( ) (Net::NNTP): 17.2.2. Net::NNTP Reference (Perl in a Nutshell)
- overwriting existing files, race conditions and: 23.2.2. Handling Race Conditions (Programming Perl)
- ownership, file: 29.2.13. chown (Programming Perl)
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