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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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