Index

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# Index: Symbols and Numbers

-0 option (perl) : 3.2. Command-Line Options
\007 (octal value) sequence : 4.6.3. Escaped Sequences
& (ampersand)
  AND bitwise operator : 4.5.10. Bitwise Operators
  calling subroutines : 4.7.1. Calling Subroutines
  in encoded URLs : 9.2. URL Encoding
  prototype symbol : 4.7.5. Prototypes
  && (logical AND) operator : 4.5.9. Logical Operators
  &&= (assignment) operator : 4.5.6. Assignment Operators
  &= (assignment) operator : 4.5.6. Assignment Operators
<> (angle brackets) : 4.10. Formats
  greater-than operator : 4.5.4.1. Relational operators
  less-than operator : 4.5.4.1. Relational operators
  < Perl debugger command : Chapter 6, Reference: <
  << Perl debugger command : Chapter 6, Reference: <<
  <<= (assignment) operator : 4.5.6. Assignment Operators
  <= (less-than-or-equal) operator : 4.5.4.1. Relational operators
  <=> (comparison) operator : 4.5.4.2. Equality operators
  <% %> delimiters : 20.2. Server-Side PerlScript
  > Perl debugger command : Chapter 6, Reference: >
  <...> line-input operator : 4.9. Filehandles
  >> to open file for appending : 4.9. Filehandles
  >> Perl debugger command : Chapter 6, Reference: >>
  >>= (assignment) operator : 4.5.6. Assignment Operators
  >= (greater-than-or-equal) operator : 4.5.4.1. Relational operators
* (asterisk)
  multiplication operator : 4.5.3. Arithmetic Operators
  prototype symbol (typeglob) : 4.7.5. Prototypes
  regular expression metacharacter : 4.6.2. Regular Expression Syntax
  ** (exponentiation) operator : 4.5.3. Arithmetic Operators
  **= (assignment) operator : 4.5.6. Assignment Operators
  *= (assignment) operator : 4.5.6. Assignment Operators
  *? regular expression quantifier : 4.6.6. Quantifiers
@ (at sign)
  @_ array : 4.7.2. Passing Arguments
  dereferencing with : 4.8.2. Dereferencing
  format fieldholders : 4.10. Formats
  prototype symbol (list) : 4.7.5. Prototypes
  signifying arrays : 4.2.4.1. Arrays
\ (backslash)
  creating references : 4.8.1. Creating References
  in prototype declarations : 4.7.5. Prototypes
  reference creation operator : 4.5.2. Unary Operators
  regular expression metacharacter : 4.6.2. Regular Expression Syntax
! (bang)
  CPAN.pm eval command : Chapter 2, Reference: !
  logical negation operator : 4.5.2. Unary Operators
  .newsrc entries : 15.3. The News::Newsrc Module
  Perl debugger command : Chapter 6, Reference: !
  !! Perl debugger command : Chapter 6, Reference: !!
  != (not equal to) operator : 4.5.4.2. Equality operators
  !~ (pattern match) operator : 4.5.7. Pattern Match Operators
{} (braces)
  delimiting statement blocks : 4.3. Statements
  regular expression metacharacter : 4.6.2. Regular Expression Syntax
  regular expression quantifiers : 4.6.6. Quantifiers
  { Perl debugger command : Chapter 6, Reference: {
  {{ Perl debugger command : Chapter 6, Reference: {{
[] (brackets)
  Perl debugger command : Chapter 6, Reference: =
  regular expression metacharacter
    4.6.2. Regular Expression Syntax
    4.6.4. Character Classes
^ (caret)
  in [...] construct : 4.6.4. Character Classes
  filled field fieldholder : 4.10. Formats
  grid geometry manager placeholder : 18.2.2. The grid Geometry Manager
  regular expression anchor : 4.6.5. Anchors
  regular expression metacharacter : 4.6.2. Regular Expression Syntax
  XOR bitwise operator : 4.5.10. Bitwise Operators
  ^= (assignment) operator : 4.5.6. Assignment Operators
: (colon)
  .newsrc entries : 15.3. The News::Newsrc Module
  in package names : 7.1. Namespaces and Packages
, (comma)
  number legibility without : 4.2.1. Numbers
  operator : 4.5.11.3. Comma operator
$ (dollar sign)
  dereferencing with : 4.8.2. Dereferencing
  prototype symbol (scalar) : 4.7.5. Prototypes
  regular expression anchor : 4.6.5. Anchors
  regular expression metacharacter : 4.6.2. Regular Expression Syntax
  signifying scalar variables : 4.2.4. Variables
$ variables
  $0 variable : 4.4.1. Global Special Variables
  $1, $2, $3, ...
    4.4.5. Regular Expression Special Variables
    4.6.7. Pattern Match Variables
  $& variable : 4.4.5. Regular Expression Special Variables
  $< variable : 4.4.1. Global Special Variables
  $> variable : 4.4.1. Global Special Variables
  $' variable : 4.4.5. Regular Expression Special Variables
  $@ variable : 4.4.1. Global Special Variables
  $\ variable : 4.4.1. Global Special Variables
  $` variable : 4.4.5. Regular Expression Special Variables
  $! variable : 4.4.1. Global Special Variables
  $[ variable : 4.4.1. Global Special Variables
  $] variable : 4.4.1. Global Special Variables
  $^ variable : 4.4.6. Filehandle Special Variables
  $^A variable : 4.4.1. Global Special Variables
  $^D variable : 4.4.1. Global Special Variables
  $^E variable : 4.4.1. Global Special Variables
  $^F variable : 4.4.1. Global Special Variables
  $^H variable : 4.4.1. Global Special Variables
  $^I variable : 4.4.1. Global Special Variables
  $^L variable : 4.4.1. Global Special Variables
  $^M variable : 4.4.1. Global Special Variables
  $^O variable : 4.4.1. Global Special Variables
  $^P variable : 4.4.1. Global Special Variables
  $: variable : 4.4.1. Global Special Variables
  $, variable : 4.4.1. Global Special Variables
  $$ variable : 4.4.1. Global Special Variables
  $. variable : 4.4.1. Global Special Variables
  $= variable : 4.4.6. Filehandle Special Variables
  $# variable : 4.4.1. Global Special Variables
  $- variable : 4.4.6. Filehandle Special Variables
  $( variable : 4.4.1. Global Special Variables
  $) variable : 4.4.1. Global Special Variables
  $% variable : 4.4.6. Filehandle Special Variables
  $+ variable : 4.4.5. Regular Expression Special Variables
  $? variable : 4.4.1. Global Special Variables
  $" variable : 4.4.1. Global Special Variables
  $; variable : 4.4.1. Global Special Variables
  $/ variable : 4.4.1. Global Special Variables
  $~ variable : 4.4.6. Filehandle Special Variables
  $_ ($ARG) variable : 4.4.1. Global Special Variables
  $| variable : 4.4.6. Filehandle Special Variables
  $^T variable : 4.4.1. Global Special Variables
  $^W variable : 4.4.1. Global Special Variables
  $^X variable : 4.4.1. Global Special Variables
. (dot)
  concatenation operator : 4.5.11.4. String operator
  Perl debugger command : Chapter 6, Reference: .
  regular expression metacharacter : 4.6.2. Regular Expression Syntax
  .. (range) operator : 4.5.11.1. Range operator
  ... (range) operator : 4.5.11.1. Range operator
  .= (assignment) operator : 4.5.6. Assignment Operators
= (equal sign)
  assignment operator
    4.2.4. Variables
    4.5.6. Assignment Operators
  for embedded documentation (pod) : 4.1. Program Structure
  in hash name/value pairs : 4.2.4.2. Hashes
  for pod commands : 4.11. Pod
  == (equal to) operator : 4.5.4.2. Equality operators
  => operator, defining key/value pairs
    4.2.4.2. Hashes
    4.5.11.3. Comma operator
  =~ (pattern match) operator : 4.5.7. Pattern Match Operators
# (hash mark)
  for comments : 4.1. Program Structure
  format fieldholder : 4.10. Formats
  #! (shebang) line : 3. The Perl Interpreter
- (hyphen)
  arithmetic negation operator : 4.5.2. Unary Operators
  grid geometry manager placeholder : 18.2.2. The grid Geometry Manager
  Perl debugger command : Chapter 6, Reference: -
  in [...] construct : 4.6.4. Character Classes
  -> (arrow) operator
    4.5.1. The Arrow Operator
    7.4. Object Syntax
    dereferencing with : 4.8.2.1. Arrow dereferencing
  -= (assignment) operator : 4.5.6. Assignment Operators
  -- (autodecrement) operator : 4.5.5. Autoincrement and Autodecrement
  -- option (perl) : 3.2. Command-Line Options
() (parentheses)
  around function arguments : 5. Function Reference
  operator precedence and : 4.5. Operators
  regular expression metacharacter : 4.6.2. Regular Expression Syntax
  (?...) extended regular expression syntax : 4.6.8. Extended Regular Expressions
% (percent sign)
  dereferencing with : 4.8.2. Dereferencing
  modulus operator : 4.5.3. Arithmetic Operators
  prototype symbol (hash) : 4.7.5. Prototypes
  signifying variable type : 4.2.4.2. Hashes
  %= (assignment) operator : 4.5.6. Assignment Operators
+ (plus)
  1 : 4.5.5. Autoincrement and Autodecrement
  regular expression metacharacter : 4.6.2. Regular Expression Syntax
  unary operator : 4.5.2. Unary Operators
  += (assignment) operator : 4.5.6. Assignment Operators
  +? regular expression quantifier : 4.6.6. Quantifiers
? (question mark)
  regular expression metacharacter : 4.6.2. Regular Expression Syntax
  ?: (conditional) operator : 4.5.11.2. Conditional operator
  ?? regular expression quantifier : 4.6.6. Quantifiers
  ?...? pattern match operator : 4.6.1. Pattern-Matching Operators
  ?...? Perl debugger command : Chapter 6, Reference: ?pattern?
; (semicolon)
  ending Perl statements : 4.1. Program Structure
  in prototype declarations : 4.7.5. Prototypes
/ (slash)
  division operator : 4.5.3. Arithmetic Operators
  encoding in URLs : 9.2. URL Encoding
  /= (assignment) operator : 4.5.6. Assignment Operators
  /.../ pattern match operator : 4.6. Regular Expressions
  /.../ Perl debugger command : Chapter 6, Reference: /pattern/
~ (tilde)
  bitwise negation operator : 4.5.2. Unary Operators
  suppressing output whitespace : 4.10. Formats
  ~~ to print strings in fields : 4.10. Formats
_ (underscore)
  filehandle : 4.4.3. Global Special Filehandles
  improving number legibility : 4.2.1. Numbers
| (vertical bar)
  format fieldholders : 4.10. Formats
  OR bitwise operator : 4.5.10. Bitwise Operators
  Perl debugger command : Chapter 6, Reference: |
  regular expression metacharacter : 4.6.2. Regular Expression Syntax
  |= (assignment) operator : 4.5.6. Assignment Operators
  || (logical OR) operator : 4.5.9. Logical Operators
  || Perl debugger command : Chapter 6, Reference: ||
  ||= (assignment) operator : 4.5.6. Assignment Operators

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