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Index: Symbols and Numbers
- -0 option (perl)
- Perl Cookbook, 8.0. Introduction
- Perl in a Nutshell, 3.2. Command-Line Options
- Programming Perl, 6.1.2. Switches
- "0 but not true"
- Perl Cookbook, 10.10. Returning Failure
- Perl Cookbook, 17.2. Writing a TCP Server
- \007 (octal value) sequence
: Perl in a Nutshell, 4.6.3. Escaped Sequences
- 0666, as permission
: Learning Perl, 13.5. Modifying Permissions
- "1 while"
: Perl Cookbook, 1.7. Expanding and Compressing Tabs
- \1, \2, ... in regular expressions
- Learning Perl, 7.3.2.3. Parentheses as memory
- Learning Perl, 7.4.5. Special Read-Only Variables
- Learning Perl on Win32 Systems, 7.3.2.3. Parentheses as memory
- Learning Perl on Win32 Systems, 7.4.5. Special Read-Only Variables
- Perl in a Nutshell, 4.6.7. Pattern Match Variables
- "500 Server Error", fixing
: Perl Cookbook, 19.3. Fixing a 500 Server Error
- 8.3 filename format
: Learning Perl on Win32 Systems, 10.3. Using Pathnames and Filenames
- & (ampersand)
: Programming Perl, 2.5.10. Named Unary and File Test Operators
- address-of operator (in C)
: Programming Perl, 2.5.21. C Operators Missing from Perl
- bitwise AND operator
- Perl in a Nutshell, 4.5.10. Bitwise Operators
- Programming Perl, 2.5.13. Bitwise Operators
- calling subroutines
: Perl in a Nutshell, 4.7.1. Calling Subroutines
- in encoded URLs
: Perl in a Nutshell, 9.2. URL Encoding
- in filenames
: Programming Perl, 3.2.102. open
- prototype character
- Perl in a Nutshell, 4.7.5. Prototypes
- Programming Perl, 2.7.3. Prototypes
- query strings and
: Learning Perl, 19.2. Your CGI Program in Context
- for subroutine names
- Programming Perl, 2.3.1. Variables
- Programming Perl, 2.7. Subroutines
- && (logical AND) operator
- Perl Cookbook, 1.2. Establishing a Default Value
- Learning Perl, 9.6. && and || as Control Structures
- Perl in a Nutshell, 4.5.9. Logical Operators
- Programming Perl, 2.5.14. C-style Logical (Short Circuit) Operators
- &&= (assignment) operator
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- &= (assignment) operator
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- < > (angle brackets)
- < access mode
: Perl Cookbook, 7.0. Introduction
- < (filename globbing) operator
- Learning Perl, 12.2. Globbing
- Programming Perl, 2.3.7.3. Filename globbing operator
- Programming Perl, 3.2.102. open
- < (format field character)
- Learning Perl, 11.4.1. Text Fields
- Perl in a Nutshell, 4.10. Formats
- < for left justification
- Learning Perl, 2.4.2. Operators for Strings
- Programming Perl, 2.8.1. Format Variables
- < (less than) operator
- 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
- < (line input) operator
: Programming Perl, 2.3.7.2. Line input (angle) operator
- < Perl debugger command
- Perl in a Nutshell, Chapter 6, Reference: <
- Programming Perl, 8.1.1. Debugger Commands
- << for here documents
: Programming Perl, 2.3.2.6. "Here" documents
- << (left-shift) operator
: Programming Perl, 2.5.9. Shift Operators
- << Perl debugger command
: Perl in a Nutshell, Chapter 6, Reference: <<
- <<= (assignment) operator
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- <> (angle, diamond, line-input) operator
- Advanced Perl Programming, 3.1.2.1. When would you ever need to use local?
- Perl Cookbook, 7.0. Introduction
- Perl Cookbook, 7.7. Writing a Filter
- Perl Cookbook, 8.0. Introduction
- Perl Cookbook, 9.6. Globbing, or Getting a List of Filenames Matching a Pattern
- Perl Cookbook, 17.0. Introduction
- Learning Perl, 6.2. Input from the Diamond Operator
- Learning Perl on Win32 Systems, 17.5. Variable-Length (Text) Databases
- Perl in a Nutshell, 4.9. Filehandles
- Programming Perl, 7.2.35.3. Non-option callback routine
- examples of
- Learning Perl, A.7. Chapter 8, Functions
- Learning Perl, A.9. Chapter 10, Filehandles and File Tests
- Learning Perl, A.14. Chapter 15, Other Data Transformation
- Learning Perl, A.16. Chapter 17, User Database Manipulation
- Learning Perl on Win32 Systems, A.7. Chapter 8, Functions
- Learning Perl on Win32 Systems, A.9. Chapter 10, Filehandles and File Tests
- Learning Perl on Win32 Systems, A.14. Chapter 15, Other Data Transformation
- Learning Perl on Win32 Systems, A.16. Chapter 17, Database Manipulation
- Learning Perl on Win32 Systems, 7.2. Simple Uses of Regular Expressions
- <&= and <& open modes
: Perl Cookbook, 7.19. Opening and Closing File Descriptors by Number
- <= (less than or equal) operator
- 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
- <=> (comparison, spaceship) operator
- Perl Cookbook, 4.14. Sorting an Array Numerically
- Learning Perl, 15.4. Advanced Sorting
- Perl in a Nutshell, 4.5.4.2. Equality operators
- Programming Perl, 2.5.12. Equality Operators
- Programming Perl, 3.2.153. sort
- examples of
: Learning Perl, A.16. Chapter 17, User Database Manipulation
- <% %> delimiters
: Perl in a Nutshell, 20.2. Server-Side PerlScript
- <FH> operator
: Programming Perl, 8.2.2. Frequently Ignored Advice
- > access mode
: Perl Cookbook, 7.0. Introduction
- > (filename globbing) operator
- Learning Perl, 12.2. Globbing
- Programming Perl, 2.3.7.3. Filename globbing operator
- Programming Perl, 3.2.102. open
- > (format field character)
- Learning Perl, 11.4.1. Text Fields
- Perl in a Nutshell, 4.10. Formats
- > (greater than) operator
- 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
- > (line input) operator
: Programming Perl, 2.3.7.2. Line input (angle) operator
- > (Perl debugger) command
- Perl in a Nutshell, Chapter 6, Reference: >
- Programming Perl, 8.1.1. Debugger Commands
- > (for right justification)
: Programming Perl, 2.8.1. Format Variables
- >&, in open()
- Perl Cookbook, 7.19. Opening and Closing File Descriptors by Number
- Learning Perl, 14.5. Summary of Process Operations
- >> access mode
: Perl Cookbook, 7.0. Introduction
- >> to open file for appending
: Perl in a Nutshell, 4.9. Filehandles
- >> Perl debugger command
: Perl in a Nutshell, Chapter 6, Reference: >>
- >> (right-shift) operator
: Programming Perl, 2.5.9. Shift Operators
- >>= (assignment) operator
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- >= (greater than or equal) operator
- 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
- * (asterisk)
: Programming Perl, 2.5.10. Named Unary and File Test Operators
- dereference operator (in C)
: Programming Perl, 2.5.21. C Operators Missing from Perl
- multiplication operator
- Perl in a Nutshell, 4.5.3. Arithmetic Operators
- Programming Perl, 2.5.7. Multiplicative Operators
- in pack format string
: Learning Perl, 16.2. Packing and Unpacking Binary Data
- as prefix
: Learning Perl, D.7. Symbol Table Manipulation with *FRED
- prototype character
- Perl in a Nutshell, 4.7.5. Prototypes
- Programming Perl, 2.7.3. Prototypes
- quantifier
- Programming Perl, 1.7.1. Quantifiers
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- regular expression metacharacter
- Learning Perl, 7.3.2.2. Multipliers
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- to store filehandles
- Perl Cookbook, 7.0. Introduction
- Perl Cookbook, 7.16. Storing Filehandles in Variables
- for typeglob names
- Programming Perl, 2.3.6. Typeglobs and Filehandles
- Programming Perl, 2.7.1. Passing Symbol Table Entries (Typeglobs)
- ** (exponentiation) operator
- Learning Perl, 2.4.1. Operators for Numbers
- Perl in a Nutshell, 4.5.3. Arithmetic Operators
- Programming Perl, 2.5.4. Exponentiation
- Programming Perl, 8.2.3. Awk Traps
- **= operator
- Learning Perl, 2.6.1. Binary Assignment Operators
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- *= (assignment) operator
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- *? regular expression quantifier
: Perl in a Nutshell, 4.6.6. Quantifiers
- @ (at sign)
: Programming Perl, 8.2.7. Previous Perl Traps
- array name prefix
- Learning Perl, 1.5.5. More than One Secret Word
- Learning Perl on Win32 Systems, 1.6.5. More than One Secret Word
- Perl in a Nutshell, 4.2.4.1. Arrays
- Programming Perl, 2.3.1. Variables
- in debugger
: Programming Perl, 8.1.2. Using the Debugger
- dereferencing with
- Advanced Perl Programming, 1.1.4. References to Arrays
- Perl in a Nutshell, 4.8.2. Dereferencing
- format field delimiter
- Learning Perl, 11.4.1. Text Fields
- Perl in a Nutshell, 4.10. Formats
- in picture lines
: Programming Perl, 2.8. Formats
- prefix for array variables
: Learning Perl, 3.3. Variables
- prototype character
- Perl in a Nutshell, 4.7.5. Prototypes
- Programming Perl, 2.7.3. Prototypes
- @*, in formats
: Learning Perl, 11.4.3. Multiline Fields
- @_ array
- Perl Cookbook, 10.1. Accessing Subroutine Arguments
- Learning Perl, 1.5.9. Making It a Bit More Modular
- Learning Perl, 8.4. Arguments
- Learning Perl on Win32 Systems, 1.6.9. Making It a Bit More Modular
- Learning Perl on Win32 Systems, 8.4. Arguments
- Perl in a Nutshell, 4.7.2. Passing Arguments
- Programming Perl, 2.7. Subroutines
- Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
- Programming Perl, 8.1.7. Debugger Bugs
- ` (backquote)
- Learning Perl, 1.5.12. Warning Someone When Things Go Astray
- Programming Perl, 6.2.2.1. Anonymous pipes
- as command invocation
: Learning Perl, 14.2. Using Backquotes
- emulating
: Programming Perl, 6.3.1.2. Cleaning up your path
- example of
: Learning Perl, A.13. Chapter 14, Process Management
- expanding
: Perl Cookbook, 1.10. Interpolating Functions and Expressions Within Strings
- operator
- Perl Cookbook, 16.1. Gathering Output from a Program
- Perl Cookbook, 19.6. Executing Commands Without Shell Escapes
- Programming Perl, 2.3.7.1. Command input (backtick) operator
- Programming Perl, 8.2.6. Shell Traps
- Programming Perl, 8.4. Programming with Style
- qx()
: Perl Cookbook, 4.1. Specifying a List In Your Program
- \ (backslash)
- Learning Perl, 2.3.2. Double-Quoted Strings
- Learning Perl on Win32 Systems, 10.3. Using Pathnames and Filenames
- escapes
- Perl Cookbook, 1.13. Escaping Characters
- Learning Perl, 2.3.1. Single-Quoted Strings
- Learning Perl on Win32 Systems, 2.3.2. Double-Quoted Strings
- Programming Perl, 2.4.1.1. The regular expression bestiary
- for multiline commands
: Programming Perl, 8.1.2. Using the Debugger
- operator
- Perl Cookbook, 10.5. Passing Arrays and Hashes by Reference
- Perl Cookbook, 11.5. Taking References to Scalars
- in prototype declarations
: Perl in a Nutshell, 4.7.5. Prototypes
- quotemeta function for
: Programming Perl, 3.2.114. quotemeta
- reference creation operator
- Perl in a Nutshell, 4.5.2. Unary Operators
- Perl in a Nutshell, 4.8.1. Creating References
- Programming Perl, 2.5.5. Ideographic Unary Operators
- Programming Perl, 4.2.1. The Backslash Operator
- in regular expressions
- Learning Perl, 7.3.1. Single-Character Patterns
- Learning Perl, 7.3.3. Anchoring Patterns
- Learning Perl on Win32 Systems, 7.3.1. Single-Character Patterns
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- as memory access
: Learning Perl, 7.3.2.3. Parentheses as memory
- static allocation
: Advanced Perl Programming, 1.1. Referring to Existing Variables
- in system() argument
: Learning Perl, 14.1. Using system and exec
- \1, \2, ... pattern match variables
- Learning Perl, 7.3.2.3. Parentheses as memory
- Learning Perl, 7.4.5. Special Read-Only Variables
- Learning Perl on Win32 Systems, 7.3.2.3. Parentheses as memory
- Learning Perl on Win32 Systems, 7.4.5. Special Read-Only Variables
- Perl in a Nutshell, 4.6.7. Pattern Match Variables
- \@ reference notation
: Learning Perl, 19.7.1. References
- ! (bang)
- for argument specifiers
: Programming Perl, 7.2.35. Getopt::Long - Extended Processing of Command-Line Options
- CPAN.pm eval command
: Perl in a Nutshell, Chapter 2, Reference: !
- example of
: Learning Perl, A.13. Chapter 14, Process Management
- in import list
: Programming Perl, 7.2.15.1. Specialized import lists
- logical negation operator
- Learning Perl, 1.5.9. Making It a Bit More Modular
- Learning Perl on Win32 Systems, 1.6.9. Making It a Bit More Modular
- Perl in a Nutshell, 4.5.2. Unary Operators
- Programming Perl, 2.5.5. Ideographic Unary Operators
- .newsrc entries
: Perl in a Nutshell, 15.3. The News::Newsrc Module
- Perl debugger command
- Perl in a Nutshell, Chapter 6, Reference: !
- Programming Perl, 8.1.1. Debugger Commands
- !! debugger command
- Perl in a Nutshell, Chapter 6, Reference: !!
- Programming Perl, 8.1.1. Debugger Commands
- != (not equal to) operator
- Learning Perl, 2.4.2. Operators for Strings
- Perl in a Nutshell, 4.5.4.2. Equality operators
- Programming Perl, 2.5.12. Equality Operators
- Programming Perl, 8.2.1. Universal Blunders
- !~ (binding) operator
: Programming Perl, 2.5.6. Binding Operators
- !~ (pattern match) operator
: Perl in a Nutshell, 4.5.7. Pattern Match Operators
- {} (braces)
- Advanced Perl Programming, 1.2.3. References to Anonymous Storage
- Advanced Perl Programming, 1.2.5. A More General Rule
- Programming Perl, 4.5. Braces, Brackets, and Quoting
- Programming Perl, 8.2.1. Universal Blunders
- Programming Perl, 8.4. Programming with Style
- anonymous hashes
: Advanced Perl Programming, 1.2.3. References to Anonymous Storage
- in awk
: Programming Perl, 8.2.3. Awk Traps
- in double-quoted strings
: Learning Perl, 2.6.4. Interpolation of Scalars into Strings
- hash composer
: Programming Perl, 4.2.3. The Anonymous Hash Composer
- identifiers in
: Programming Perl, 2.3.2.2. String literals
- quantifier
- Programming Perl, 1.7.1. Quantifiers
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- in regular expressions
- Learning Perl, 7.3.2.2. Multipliers
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- Perl in a Nutshell, 4.6.6. Quantifiers
- required in if statements
: Learning Perl, 4.2. The if/unless Statement
- statement blocks
- Perl in a Nutshell, 4.3. Statements
- Programming Perl, 2.6.2. Compound Statements
- { Perl debugger command
: Perl in a Nutshell, Chapter 6, Reference: {
- {{ Perl debugger command
: Perl in a Nutshell, Chapter 6, Reference: {{
- [] (brackets)
- anonymous arrays
: Advanced Perl Programming, 1.2.3. References to Anonymous Storage
- array composer
: Programming Perl, 4.2.2. The Anonymous Array Composer
- Perl debugger command
: Perl in a Nutshell, Chapter 6, Reference: =
- reference notation
: Learning Perl, 19.7.1. References
- regular expression metacharacter
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- Perl in a Nutshell, 4.6.4. Character Classes
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- [ (left bracket) in double-quoted strings
: Learning Perl, 3.7. Variable Interpolation of Arrays
- ^ (caret)
- in [...] construct
: Perl in a Nutshell, 4.6.4. Character Classes
- anchor in regular expressions
- Learning Perl, 7.3.1. Single-Character Patterns
- Learning Perl, 7.3.3. Anchoring Patterns
- Learning Perl on Win32 Systems, 7.3.3. Anchoring Patterns
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- Perl in a Nutshell, 4.6.5. Anchors
- assertion
: Programming Perl, 1.7.1. Quantifiers
- bitwise XOR 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
- filled field fieldholder
- Learning Perl, 11.4.4. Filled Fields
- Perl in a Nutshell, 4.10. Formats
- grid geometry manager placeholder
: Perl in a Nutshell, 18.2.2. The grid Geometry Manager
- line boundary
- Programming Perl, 1.7.3. Nailing Things Down
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- Programming Perl, 2.4.1.3. The fine print
- matching
: Programming Perl, 2.4.1.2. The rules of regular expression matching
- in picture lines
: Programming Perl, 2.8. Formats
- ^= (assignment) operator
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- : (colon)
- in import list
: Programming Perl, 7.2.15.1. Specialized import lists
- label suffix
: Learning Perl on Win32 Systems, 9.4. Labeled Blocks
- matching with split()
: Learning Perl on Win32 Systems, 7.6.1. The split Function
- .newsrc entries
: Perl in a Nutshell, 15.3. The News::Newsrc Module
- in package names
: Perl in a Nutshell, 7.1. Namespaces and Packages
- :: for package identifiers
- Advanced Perl Programming, 6.6. Nesting Packages
- Programming Perl, 5.1. Packages
- Programming Perl, 8.2.7. Previous Perl Traps
- for instance methods
: Advanced Perl Programming, 7.2.4. The Need for Polymorphism
- , (comma)
- (see also CSV)
- Programming Perl, 8.2.1. Universal Blunders
- array literal character
: Learning Perl on Win32 Systems, 3.2. Literal Representation
- delimiting list values
- Perl Cookbook, 4.2. Printing a List with Commas
- Programming Perl, 2.3.4. List Values and Arrays
- key/value pairs and
: Programming Perl, 2.3.5. Hashes (Associative Arrays)
- large numbers and
: Programming Perl, 2.3.2.1. Numeric literals
- number legibility without
: Perl in a Nutshell, 4.2.1. Numbers
- operator
- (see also = (equal sign), => operator)
- Learning Perl on Win32 Systems, D.4. Other Operators
- Perl in a Nutshell, 4.5.11.3. Comma operator
- Programming Perl, 2.5.18. Comma Operators
- Programming Perl, 8.2.3. Awk Traps
- $ (dollar sign)
- in debugger
: Programming Perl, 8.1.2. Using the Debugger
- dereferencing scalars
- Advanced Perl Programming, 1.1.3. References to Scalars
- Perl in a Nutshell, 4.8.2. Dereferencing
- line boundary
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- Programming Perl, 2.4.1.3. The fine print
- prototype character
- Perl in a Nutshell, 4.7.5. Prototypes
- Programming Perl, 2.7.3. Prototypes
- regular expression anchor
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- Perl in a Nutshell, 4.6.5. Anchors
- removing significance in strings
: Learning Perl, 2.6.4. Interpolation of Scalars into Strings
- scalar variable names
- Learning Perl, 2.5. Scalar Variables
- Perl in a Nutshell, 4.2.4. Variables
- Programming Perl, 2.3.1. Variables
- word boundary
: Programming Perl, 1.7.3. Nailing Things Down
- $ variables
- $0 ($PROGRAM_NAME)
- 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
- $1, $2, $3...
: (see backreferences)
- $& ($MATCH)
- Learning Perl, 7.4.5. Special Read-Only Variables
- 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, 6.4.2.2. a2p
- Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
- Programming Perl, 8.3.1. Time Efficiency
- $< ($REAL_USER_ID)
- 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
- $> ($EFFECTIVE_USER_ID)
- 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
- $' ($POSTMATCH)
- Perl Cookbook, 6.0. Introduction
- Learning Perl, 7.4.5. Special Read-Only Variables
- 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, 6.4.2.2. a2p
- Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
- Programming Perl, 8.3.1. Time Efficiency
- $* ($MULTILINE_MATCHING)
: Programming Perl, 2.9.1. Regular Expression Special Variables
- $@ ($EVAL_ERROR)
- 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
- $` ($PREMATCH)
- Perl Cookbook, 6.0. Introduction
- Learning Perl, 7.4.5. Special Read-Only Variables
- 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, 6.4.2.2. a2p
- Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
- Programming Perl, 8.3.1. Time Efficiency
- $\ ($OUTPUT_RECORD_SEPARATOR)
- 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
- $! ($OS_ERROR)
- 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
- $[
- Perl in a Nutshell, 4.4.1. Global Special Variables
- Programming Perl, 2.9.3. Global Special Variables
- $] ($PERL_VERSION)
- 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
- $^ ($FORMAT_TOP_NAME)
- Learning Perl, 11.6.3. Changing the Top-of-Page Format Name
- 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
- Programming Perl, 8.2.1. Universal Blunders
- $^A ($ACCUMULATOR)
- Perl in a Nutshell, 4.4.1. Global Special Variables
- Programming Perl, 2.8.3. Accessing Formatting Internals
- Programming Perl, 2.9.3. Global Special Variables
- Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
- formline function
: Programming Perl, 3.2.42. formline
- $^D ($DEBUGGING)
- 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
- $^E variable
: Perl in a Nutshell, 4.4.1. Global Special Variables
- $^F ($SYSTEM_FD_MAX)
- 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
- $^H
- Perl in a Nutshell, 4.4.1. Global Special Variables
- Programming Perl, 2.9.3. Global Special Variables
- $^I ($INPLACE_EDIT)
- Learning Perl, 17.5. Variable-Length (Text) Databases
- 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
- $^L ($FORMAT_FORMFEED, $FORMAT_LINEFEED)
- Perl in a Nutshell, 4.4.1. Global Special Variables
- Programming Perl, 2.8.1. Format Variables
- Programming Perl, 2.9.3. Global Special Variables
- Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
- $^M variable
: Perl in a Nutshell, 4.4.1. Global Special Variables
- $^O ($OSNAME)
- 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
- $^P ($PERLDB)
- 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
- $^T ($BASETIME)
- Learning Perl, 10.5. The -x File Tests
- Learning Perl on Win32 Systems, 10.6. The -x File Tests
- Perl in a Nutshell, 4.4.1. Global Special Variables
- Programming Perl, 2.5.10. Named Unary and File Test Operators
- Programming Perl, 2.9.3. Global Special Variables
- Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
- $^W ($WARNING)
- Perl Cookbook, 13.5. Using Classes as Structs
- 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
- $^X ($EXECUTABLE_NAME)
- 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
- $: ($FORMAT_LINE_BREAK _CHARACTERS)
- Learning Perl, 11.4.4. Filled Fields
- 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
- $, ($LIST_SEPARATOR, $OUTPUT_FIELD_SEPARATOR)
- 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
- $$ ($PROCESS_ID)
- 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
- $. ($INPUT_LINE_NUMBER)
- 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
- resetting with close function
: Programming Perl, 3.2.18. close
- $= ($FORMAT_LINES_PER_PAGE)
- Learning Perl, 11.6.5. Changing the Position on the Page
- 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
- $# ($OFMT)
- 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
- $- ($FORMAT_LINES_LEFT)
- Learning Perl, 11.6.5. Changing the Position on the Page
- Perl in a Nutshell, 4.4.6. Filehandle Special Variables
- Programming Perl, 2.9.2. Per-Filehandle Special Variables
- Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
- interaction with $= variable
: Learning Perl, 11.6.5. Changing the Position on the Page
- $( ($REAL_GROUP_ID)
- 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
- $) ($EFFECTIVE_GROUP_ID)
- 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
- $% ($FORMAT_PAGE_NUMBER)
- Learning Perl, 1.5.14. Listing the Secret Words
- Learning Perl on Win32 Systems, 1.6.14. Listing the Secret Words
- 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
- $+ ($LAST_PAREN_MATCH)
- 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
- $? ($CHILD_ERROR)
- 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
- backtick operator and
: Programming Perl, 2.3.7.1. Command input (backtick) operator
- close function and
: Programming Perl, 3.2.18. close
- $" ($LIST_SEPARATOR)
- Perl in a Nutshell, 4.4.1. Global Special Variables
- Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
- $; ($SUBSCRIPT_SEPARATOR)
- Perl Cookbook, 9.4. Recognizing Two Names for the Same File
- 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
- $/ ($INPUT_RECORD_SEPARATOR)
- Perl Cookbook, 8.0. Introduction
- Learning Perl, 6.1. Input from STDIN
- Learning Perl, 14.2. Using Backquotes
- Learning Perl on Win32 Systems, 6.1. Input from STDIN
- 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
- $~ ($FORMAT_NAME)
- Learning Perl, 11.6.2. Changing the Format Name
- 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
- $_ ($ARG)
- Perl in a Nutshell, 4.4.1. Global Special Variables
- Programming Perl, 2.4.1.3. The fine print
- Programming Perl, 2.9.3. Global Special Variables
- Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
- accidental clobbering
: Perl Cookbook, 4.4. Doing Something with Every Element in a List
- angle operator and
: Programming Perl, 2.3.7.2. Line input (angle) operator
- file tests default
: Learning Perl on Win32 Systems, 10.6. The -x File Tests
- forearch statement and
- Learning Perl, 4.5. The foreach Statement
- Learning Perl on Win32 Systems, 4.6. The foreach Statement
- Programming Perl, 2.6.4.3. Foreach loops
- glob()
: Programming Perl, 2.3.7.3. Filename globbing operator
- grep()
: Programming Perl, 3.2.72. grep
- implicit assignment to when reading
: Learning Perl, 6.1. Input from STDIN
- map()
: Programming Perl, 3.2.91. map
- outlawing unauthorized use
- Perl Cookbook, 1.18. Program: psgrep
- Perl Cookbook, 13.15. Creating Magic Variables with tie
- regular expression matching default
: Learning Perl on Win32 Systems, 7.2. Simple Uses of Regular Expressions
- selecting other than with =~ operator
: Learning Perl, 7.4.1. Selecting a Different Target (the =~ Operator)
- split() default
: Learning Perl on Win32 Systems, 7.6.1. The split Function
- stat(), lstat()
: Learning Perl on Win32 Systems, 10.7. The stat Function
- tr() default target
: Learning Perl on Win32 Systems, 15.5. Transliteration
- unlink() default
: Learning Perl on Win32 Systems, 13.1. Removing a File
- $_[0]
: Learning Perl, 8.4. Arguments
- $| ($OUTPUT_AUTOFLUSH)
- 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
- $a, $b, ..., sorting with
: Learning Perl, 15.4. Advanced Sorting
- . (dot)
: Programming Perl, 2.5.10. Named Unary and File Test Operators
- concatenation operator
- Perl in a Nutshell, 4.5.11.4. String operator
- Programming Perl, 1.5.2. String Operators
- Programming Perl, 2.5.8. Additive Operators
- Programming Perl, 8.3.1. Time Efficiency
- example of
: Learning Perl, A.7. Chapter 8, Functions
- in numbers
: Perl Cookbook, 2.17. Putting Commas in Numbers
- Perl debugger command
- Perl in a Nutshell, Chapter 6, Reference: .
- Programming Perl, 8.1.1. Debugger Commands
- regular expression metacharacter
- Learning Perl, 7.3.1. Single-Character Patterns
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- Programming Perl, 1.7. Regular Expressions
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- Programming Perl, 2.4.1.3. The fine print
- self-name for directory
- Learning Perl, A.11. Chapter 12, Directory Access
- Learning Perl, 13.3.1. About Hard and Soft Links
- .. (range) operator
- Perl Cookbook, 6.8. Extracting a Range of Lines
- Perl in a Nutshell, 4.5.11.1. Range operator
- Programming Perl, 2.5.15. Range Operator
- .. for parent directory
: Learning Perl, 13.3.1. About Hard and Soft Links
- .. list construction operator
: Learning Perl, 3.2. Literal Representation
- ... (range) operator
- Perl Cookbook, 6.8. Extracting a Range of Lines
- Perl in a Nutshell, 4.5.11.1. Range operator
- .= (assignment) operator
- Learning Perl, 2.6.1. Binary Assignment Operators
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- " (double quotation marks)
- Advanced Perl Programming, 5.3. Watch Your Quotes
- Programming Perl, 2.3.2.2. String literals
- Programming Perl, 2.4.1.1. The regular expression bestiary
- in formline arguments
: Programming Perl, 3.2.42. formline
- = (equal sign)
- array assignment operator
: Learning Perl on Win32 Systems, 3.4.1. Assignment
- assignment operator
- Learning Perl on Win32 Systems, 2.6. Scalar Operators and Functions
- Perl in a Nutshell, 4.2.4. Variables
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 1.5.3. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- copy constructor
: Programming Perl, 7.2.48.6. Copy constructor
- debugger command
: Programming Perl, 8.1.1. Debugger Commands
- for embedded documentation (pod)
- Perl in a Nutshell, 4.1. Program Structure
- Perl in a Nutshell, 4.11. Pod
- in hash name/value pairs
: Perl in a Nutshell, 4.2.4.2. Hashes
- => (corresponds to) operator
- Perl Cookbook, 5.0. Introduction
- Learning Perl, 19.7.2. Fancier Calling Sequences
- Perl in a Nutshell, 4.2.4.2. Hashes
- Perl in a Nutshell, 4.5.11.3. Comma operator
- Programming Perl, 2.5.18. Comma Operators
- with key/value pairs
: Programming Perl, 2.3.5. Hashes (Associative Arrays)
- with named parameters
: Programming Perl, 2.3.5. Hashes (Associative Arrays)
- => operator (CGI)
: Learning Perl on Win32 Systems, 18.4.5. Fancier Calling Sequences
- == (equal to) operator
- Learning Perl, 2.4.2. Operators for Strings
- Perl in a Nutshell, 4.5.4.2. Equality operators
- Programming Perl, 2.5.12. Equality Operators
- Programming Perl, 8.2.1. Universal Blunders
- =~ (binding) operator
- Perl Cookbook, 1.1. Accessing Substrings
- Learning Perl, 7.4.1. Selecting a Different Target (the =~ Operator)
- Perl in a Nutshell, 4.5.7. Pattern Match Operators
- Programming Perl, 2.5.6. Binding Operators
- Programming Perl, 8.2.3. Awk Traps
- examples of
- Learning Perl, 1.5.8. Making It Fair for the Rest
- Learning Perl on Win32 Systems, 1.6.8. Making It Fair for the Rest
- substitution and
: Learning Perl, 7.5. Substitutions
- tr operator and
: Learning Perl, 15.5. Transliteration
- > (greater than sign)
: (see < > (angle brackets))
- # (hash mark)
- for comments
: Perl in a Nutshell, 4.1. Program Structure
- format fieldholder
: Perl in a Nutshell, 4.10. Formats
- #! (shebang) line
- Learning Perl, 1.4. Basic Concepts
- Perl in a Nutshell, 3. The Perl Interpreter
- - (hyphen)
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- Programming Perl, 2.5.10. Named Unary and File Test Operators
- in [...] construct
: Perl in a Nutshell, 4.6.4. Character Classes
- arithmetic negation operator
- Perl in a Nutshell, 4.5.2. Unary Operators
- Programming Perl, 2.5.5. Ideographic Unary Operators
- grid geometry manager placeholder
: Perl in a Nutshell, 18.2.2. The grid Geometry Manager
- Perl debugger command
- Perl in a Nutshell, Chapter 6, Reference: -
- Programming Perl, 8.1.1. Debugger Commands
- in regular expression ranges
: Learning Perl, 7.3.1. Single-Character Patterns
- subtractive operator
: Programming Perl, 2.5.8. Additive Operators
- -> (arrow) operator
- Advanced Perl Programming, 1.1.7. Shortcuts with the Arrow Notation
- Advanced Perl Programming, 1.3.2. Final Shortcut: Omit Arrows Between Subscripts
- Perl Cookbook, 11.0. Introduction
- Perl Cookbook, 13.0. Introduction
- Perl in a Nutshell, 4.5.1. The Arrow Operator
- Perl in a Nutshell, 7.4. Object Syntax
- Programming Perl, 2.5.2. The Arrow Operator
- Programming Perl, 4.3.3. Using the Arrow Operator
- Programming Perl, 5.3.6. Method Invocation
- Programming Perl, 5.5.1. Object-Oriented Scaling Tips
- dereferencing with
: Perl in a Nutshell, 4.8.2.1. Arrow dereferencing
- indirect notation versus
: Advanced Perl Programming, 7.2.5.1. Detour: The indirect notation
- for instance methods
: Advanced Perl Programming, 7.2.4. The Need for Polymorphism
- -*- for Emacs
: Programming Perl, 6.1.1. Command Processing
- -= (assignment) operator
- Learning Perl, 11.4.2. Numeric Fields
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- -- (autodecrement) operator
- Learning Perl, 2.6.2. Autoincrement and Autodecrement
- Perl in a Nutshell, 4.5.5. Autoincrement and Autodecrement
- Programming Perl, 1.5.4. Autoincrement and Autodecrement Operators
- Programming Perl, 2.5.3. Autoincrement and Autodecrement
- Programming Perl, 7.2.48.3. Overloadable operations
- -- switch, Perl
- Perl in a Nutshell, 3.2. Command-Line Options
- Programming Perl, 6.1.2. Switches
- -| piping pseudo-command
: Programming Perl, 6.2.2.2. Talking to yourself
- < (left angle bracket)
: (see < > (angle brackets))
- () (parentheses)
- anonymous arrays
: Advanced Perl Programming, 1.2.3. References to Anonymous Storage
- around function arguments
: Perl in a Nutshell, 5. Function Reference
- array literals and
: Learning Perl on Win32 Systems, 3.2. Literal Representation
- chdir() and
: Learning Perl on Win32 Systems, 12.1. Moving Around the Directory Tree
- forcing array context with
: Learning Perl on Win32 Systems, 3.4.1. Assignment
- in functions
: Programming Perl, 3. Functions
- grouping operator
: Programming Perl, 2.4.1.2. The rules of regular expression matching
- keys() and
: Learning Perl on Win32 Systems, 5.4.1. The keys Function
- for list values
: Programming Perl, 2.3.4. List Values and Arrays
- operator precedence and
: Perl in a Nutshell, 4.5. Operators
- print() and
: Learning Perl on Win32 Systems, 6.3.1. Using print for Normal Output
- in regular expressions
- (see also backreferences)
- Learning Perl on Win32 Systems, 7.3.4. Precedence
- Learning Perl on Win32 Systems, 7.3.2.3. Parentheses as memory
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- Programming Perl, 1.7.4. Backreferences
- Programming Perl, 2.4.1.1. The regular expression bestiary
- Programming Perl, 2.5. Operators
- Programming Perl, 2.5.1. Terms and List Operators (Leftward)
- Programming Perl, 8.4. Programming with Style
- values() and
: Learning Perl on Win32 Systems, 5.4.2. The values Function
- (?!) assertion
: Programming Perl, 2.4.1.4. Regular expression extensions
- (?!...) assertion
: Programming Perl, 2.4.1.2. The rules of regular expression matching
- (?:) for grouping
: Programming Perl, 2.4.1.4. Regular expression extensions
- (?...) assertion
- Perl in a Nutshell, 4.6.8. Extended Regular Expressions
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- (?=) assertion
: Programming Perl, 2.4.1.4. Regular expression extensions
- (?#) for comments
: Programming Perl, 2.4.1.4. Regular expression extensions
- (?i) modifier
: Programming Perl, 2.4.1.4. Regular expression extensions
- % (percent sign)
: Programming Perl, 2.5.10. Named Unary and File Test Operators
- associative array prefix
- Learning Perl, 1.5.6. Giving Each Person a Different Secret Word
- Learning Perl, 5.2. Hash Variables
- Learning Perl on Win32 Systems, 1.6.6. Giving Each Person a Different Secret Word
- Learning Perl on Win32 Systems, 5.2. Hash Variables
- for checksums
: Programming Perl, 3.2.182. unpack
- dereferencing with
- Advanced Perl Programming, 1.1.5. References to Hashes
- Perl in a Nutshell, 4.8.2. Dereferencing
- for hash names
- Perl Cookbook, 5.0. Introduction
- Programming Perl, 2.3.1. Variables
- modulus operator
- Learning Perl on Win32 Systems, 2.4.1. Operators for Numbers
- Perl in a Nutshell, 4.5.3. Arithmetic Operators
- Programming Perl, 2.5.7. Multiplicative Operators
- prototype character
- Perl in a Nutshell, 4.7.5. Prototypes
- Programming Perl, 2.7.3. Prototypes
- signifying variable type
: Perl in a Nutshell, 4.2.4.2. Hashes
- %= (assignment) operator
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- + (plus sign)
: Programming Perl, 2.5.10. Named Unary and File Test Operators
- additive operator
: Programming Perl, 2.5.8. Additive Operators
- in filenames
: Programming Perl, 3.2.102. open
- modifying open()
: Learning Perl, 17.4. Fixed-Length Random Access Databases
- quantifier
- Programming Perl, 1.7. Regular Expressions
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- regular expression metacharacter
- Learning Perl, 7.3.2.2. Multipliers
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- unary operator
- Perl in a Nutshell, 4.5.2. Unary Operators
- Programming Perl, 2.5.5. Ideographic Unary Operators
- += (assignment) operator
- Learning Perl, A.3. Chapter 4, Control Structures
- Learning Perl, 2.6.1. Binary Assignment Operators
- Learning Perl on Win32 Systems, A.3. Chapter 4, Control Structures
- Learning Perl on Win32 Systems, 2.6.1. Binary Assignment Operators
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- ++ (autoincrement) operator
- Learning Perl, 2.6.2. Autoincrement and Autodecrement
- Learning Perl, 14.1. Using system and exec
- Learning Perl on Win32 Systems, 2.6.2. Autoincrement and Autodecrement
- Learning Perl on Win32 Systems, 14.1. Using system and exec
- Perl in a Nutshell, 4.5.5. Autoincrement and Autodecrement
- Programming Perl, 1.5.4. Autoincrement and Autodecrement Operators
- Programming Perl, 2.5.3. Autoincrement and Autodecrement
- Programming Perl, 7.2.48.3. Overloadable operations
- +? regular expression quantifier
: Perl in a Nutshell, 4.6.6. Quantifiers
- # (pound sign)
- comment character
- Learning Perl, 1.4. Basic Concepts
- Learning Perl on Win32 Systems, 1.5. Basic Concepts
- format field characters
: Learning Perl, 11.4.2. Numeric Fields
- ? (question mark)
: Programming Perl, 2.5.10. Named Unary and File Test Operators
- debugger command
: Programming Perl, 8.1.1. Debugger Commands
- quantifier
- Programming Perl, 1.7.1. Quantifiers
- Programming Perl, 2.4.1.2. The rules of regular expression matching
- regular expression metacharacter
- Learning Perl, 7.3.2.2. Multipliers
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- ?: (conditional) operator
- Learning Perl on Win32 Systems, 9.6. &&, ||, and ?: as Control Structures
- Perl in a Nutshell, 4.5.11.2. Conditional operator
- Programming Perl, 2.5.16. Conditional Operator
- ?...? operator
: (see m?? (match) operator)
- ?...? Perl debugger command
: Perl in a Nutshell, Chapter 6, Reference: ?pattern?
- ' (quotation marks, single)
- Advanced Perl Programming, 5.3. Watch Your Quotes
- Programming Perl, 2.3.2.2. String literals
- " (quotation marks, double)
- Advanced Perl Programming, 5.3. Watch Your Quotes
- Programming Perl, 2.3.2.2. String literals
- Programming Perl, 2.4.1.1. The regular expression bestiary
- in formline arguments
: Programming Perl, 3.2.42. formline
- > (right angle bracket)
: (see < > (angle brackets))
- ; (semicolon)
- Programming Perl, 2.6.1. Simple Statements
- Programming Perl, 8.2.1. Universal Blunders
- ending Perl statements
- Learning Perl, 1.5.1. The "Hello, World" Program
- Perl in a Nutshell, 4.1. Program Structure
- in prototype declarations
: Perl in a Nutshell, 4.7.5. Prototypes
- # (hash mark)
- for comments
: Programming Perl, 2.4. Pattern Matching
- in formats
: Programming Perl, 2.8. Formats
- #! (shebang) notation
- Learning Perl on Win32 Systems, 1.5. Basic Concepts
- Programming Perl, 1.3.1. How to Do It
- Programming Perl, 6.1.1. Command Processing
- Programming Perl, 6.3.1.3. Security bugs
- ' (single quotation marks)
- Advanced Perl Programming, 5.3. Watch Your Quotes
- Programming Perl, 2.3.2.2. String literals
- / (slash)
: Programming Perl, 2.5.10. Named Unary and File Test Operators
- choosing alternate to, in substitution
: Learning Perl, 7.5. Substitutions
- debugger command
: Programming Perl, 8.1.1. Debugger Commands
- division operator
- Perl in a Nutshell, 4.5.3. Arithmetic Operators
- Programming Perl, 2.5.7. Multiplicative Operators
- encoding in URLs
: Perl in a Nutshell, 9.2. URL Encoding
- in import list
: Programming Perl, 7.2.15.1. Specialized import lists
- regular expression delimiter
- Learning Perl, 7.2. Simple Uses of Regular Expressions
- Learning Perl, 7.4.3. Using a Different Delimiter
- Learning Perl on Win32 Systems, 7.2. Simple Uses of Regular Expressions
- Learning Perl on Win32 Systems, 7.4.3. Using a Different Delimiter
- root directory
- Perl Cookbook, 9.0. Introduction
- Programming Perl, 3.2.17. chroot
- /= (assignment) operator
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- // operator
: (see match (m//) operator)
- /.../ Perl debugger command
: Perl in a Nutshell, Chapter 6, Reference: /pattern/
- ~ (tilde)
- bitwise negation operator
- Perl in a Nutshell, 4.5.2. Unary Operators
- Programming Perl, 2.5.5. Ideographic Unary Operators
- complement operator
: Programming Perl, 8.2.3. Awk Traps
- in filenames, expanding
: Perl Cookbook, 7.3. Expanding Tildes in Filenames
- in formats
: Learning Perl, 11.4.4. Filled Fields
- suppressing output whitespace
- Perl in a Nutshell, 4.10. Formats
- Programming Perl, 2.8. Formats
- ~~ to print strings in fields
- Learning Perl on Win32 Systems, 11.4.4. Filled Fields
- Perl in a Nutshell, 4.10. Formats
- _ (underscore)
- Perl Cookbook, 9.0. Introduction
- Programming Perl, 2.3.1. Variables
- Programming Perl, 8.2.7. Previous Perl Traps
- filehandle
- Perl in a Nutshell, 4.4.3. Global Special Filehandles
- Programming Perl, 2.9.5. Global Special Filehandles
- improving number legibility
: Perl in a Nutshell, 4.2.1. Numbers
- large numbers and
: Programming Perl, 2.3.2.1. Numeric literals
- in variable names
- Learning Perl, 2.5. Scalar Variables
- Programming Perl, 8.4. Programming with Style
- | (vertical bar)
- bitwise OR operator
- Perl in a Nutshell, 4.5.10. Bitwise Operators
- Programming Perl, 2.4.1.1. The regular expression bestiary
- Programming Perl, 2.5.13. Bitwise Operators
- as format field characters
- Learning Perl, 11.4.1. Text Fields
- Perl in a Nutshell, 4.10. Formats
- Programming Perl, 2.8.1. Format Variables
- open() and
- 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
- Programming Perl, 3.2.102. open
- for option speficiers
: Programming Perl, 7.2.35.2. Aliases and abbreviations
- Perl debugger command
- Perl in a Nutshell, Chapter 6, Reference: |
- Programming Perl, 8.1.1. Debugger Commands
- regular expression metacharacter
- Learning Perl, 7.3.2.4. Alternation
- Perl in a Nutshell, 4.6.2. Regular Expression Syntax
- |= (assignment) operator
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- |- piping pseudo-command
: Programming Perl, 6.2.2.2. Talking to yourself
- || (logical OR) operator
- Perl Cookbook, 1.2. Establishing a Default Value
- Learning Perl, 1.5.9. Making It a Bit More Modular
- Learning Perl on Win32 Systems, 1.6.9. Making It a Bit More Modular
- Perl in a Nutshell, 4.5.9. Logical Operators
- Programming Perl, 2.5.14. C-style Logical (Short Circuit) Operators
- as control structure
: Learning Perl, 9.6. && and || as Control Structures
- die() and
- Learning Perl, 10.3. A Slight Diversion: die
- Learning Perl on Win32 Systems, 10.4. A Slight Diversion: die
- examples of
- Learning Perl, A.7. Chapter 8, Functions
- Learning Perl, A.15. Chapter 16, System Database Access
- Learning Perl, 15.4. Advanced Sorting
- Learning Perl on Win32 Systems, A.7. Chapter 8, Functions
- Learning Perl on Win32 Systems, 15.4. Advanced Sorting
- || Perl debugger command
- Perl in a Nutshell, Chapter 6, Reference: ||
- Programming Perl, 8.1.1. Debugger Commands
- ||= (assignment) operator
- Perl Cookbook, 1.2. Establishing a Default Value
- Perl in a Nutshell, 4.5.6. Assignment Operators
- Programming Perl, 2.5.17. Assignment Operators
- /o pattern match modifier
- Perl Cookbook, 6.10. Speeding Up Interpolated Matches
- Perl in a Nutshell, 4.6.1. Pattern-Matching Operators
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