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Index: O

-O operator : The -x File Tests
-o operator : The -x File Tests
object methods : Object-Oriented Developing in Perl
object-oriented developing : Object-Oriented Developing in Perl
objects, CGI programs and : Object-Oriented Developing in Perl
obscure biblical reference : Transliteration
oct( ) operator
- Integer Literals
- Conversion Between Numbers and Strings
octal numbers : Integer Literals
open( ) operator
- Opening and Closing a Filehandle
- Objects in CGI.pm
- commands and, example of : The Final Programs
- example of
- introduced : Moving the Secret Word List into a Separate File
- pipe symbol and : Warning Someone When Things Go Astray
- plus sign and : Fixed-Length Random Access Databases
- vertical bar in : Using Processes as Filehandles
opendir( ) operator : Opening and Closing a Directory Handle
- example of : Directory Access
opening
- DBM database : Opening and Closing DBM Hashes
- files : Opening and Closing a Filehandle
operand, definition of : Scalar Operators
operators
- addition : Operators for Numbers
- assignment : Scalar Operators and Functions
- for associative arrays : Hash Functions
- associativity of : Operator Precedence and Associativity
- autodecrement : Autoincrement and Autodecrement
- autoincrement : Autoincrement and Autodecrement
- definition of : Scalar Operators
- division : Operators for Numbers
- logical comparison : Operators for Numbers
- multiplication : Operators for Numbers
- precedence of : Operator Precedence and Associativity
- for scalar variables : Scalar Operators and Functions
- string : Operators for Strings
- string comparison : Operators for Strings
- string repetition : Operators for Strings
- subtraction : Operators for Numbers
- undef and : The Undefined Value
ord( ) operator : Packing and Unpacking Binary Data
OS/2, Perl under : Availability
ownership of files, changing : Modifying Ownership

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