Index: Symbols & Numbers

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Index: Symbols & Numbers

Symbols

& (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
&&= (assignment) operator: 4.5.6. Assignment Operators
&= (assignment) operator: 4.5.6. Assignment Operators

<> (angle brackets)

<=> (comparison) operator: 4.5.4.2. Equality operators
<...> (line-input) operator: 4.9. Filehandles
<<= (assignment) operator: 4.5.6. Assignment Operators
<< debugger commands, and: 6.2. Debugger Commands
< (less-than) operator: 4.5.4.1. Relational operators
<= (less-than-or-equal) operator: 4.5.4.1. Relational operators
>>= (assignment) operator: 4.5.6. Assignment Operators
> (greater-than) operator: 4.5.4.1. Relational operators
>= (greater-than-or-equal) operator: 4.5.4.1. Relational operators
>> (to open file for appending): 4.9. Filehandles

* (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

@ (at sign)

@_ array: 4.7.2. Passing Arguments
dereferencing with: 4.8.2. Dereferencing
format fieldholders: 4.12. Formats
prototype symbol (list): 4.7.5. Prototypes
signifying arrays: 4.2.5.1. Arrays

(backslash)

creating references: 4.8.1. Creating References
reference creation operator: 4.5.2. Unary Operators

! (bang)

!= (not equal to) operator: 4.5.4.2. Equality operators
CPAN.pm eval command: 2.4.4. Installing Modules with the CPAN Module
logical negation operator: 4.5.2. Unary Operators
Perl debugger command: 6.2. Debugger Commands
!! Perl debugger command: 6.2. Debugger Commands

{} (braces)

delimiting statement blocks: 4.3. Statements
regular expression quantifiers: 4.6.6. Quantifiers
{{ Perl debugger command: 6.2. Debugger Commands
{ Perl debugger command: 6.2. Debugger Commands

[] (brackets)

Perl debugger command: 6.2. Debugger Commands
regular expression metacharacter: 4.6.4. Character Classes

^ (caret)

in [...] construct: 4.6.4. Character Classes
grid geometry manager placeholder: 21.2.2. The grid Geometry Manager
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), 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 metacharacter: 4.6.2. Regular Expression Syntax
signifying scalar variables: 4.2.5. Variables

$ variables

$' variable: 4.4.5. Regular Expression 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: 4.4.1. 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

$^N variable: 4.4.5. Regular Expression 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

$0 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: 6.2. Debugger Commands
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)

== (equal to) operator: 4.5.4.2. Equality operators

assignment operator: 4.2.5. Variables

4.5.6. Assignment Operators

for embedded documentation (pod): 4.1. Program Structure

in hash name/value pairs: 4.2.5.2. Hashes

for pod commands: 4.13. Pod

=> operator, defining key/value pairs: 4.2.5.2. Hashes

4.5.11.3. Comma operator

/ (forward slash): 2.4.4. Installing Modules with the CPAN Module

# (hash mark)

#! (shebang) line: 3. The Perl Executable
for comments: 4.1. Program Structure
format fieldholder: 4.12. Formats

- (hyphen)

arithmetic negation operator: 4.5.2. Unary Operators

grid geometry manager placeholder: 21.2.2. The grid Geometry Manager

Perl debugger command: 6.2. Debugger Commands

in [...] construct: 4.6.4. Character Classes

-> (arrow) operator: 4.5.1. The Arrow Operator

dereferencing with: 4.8.2.1. Arrow dereferencing

-- (autodecrement) operator: 4.5.5. Autoincrement and Autodecrement

( ) (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)

%SIG: 4.10. Signals
dereferencing with: 4.8.2. Dereferencing
modulus operator: 4.5.3. Arithmetic Operators
prototype symbol (hash): 4.7.5. Prototypes
signifying variable type: 4.2.5.2. 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

? (question mark)

regular expression metacharacter: 4.6.2. Regular Expression Syntax
?: (conditional) operator: 4.5.11.2. Conditional operator
?...? pattern match operator: 4.6.1. Pattern-Matching Operators
?...? Perl debugger command: 6.2. Debugger Commands

; (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: 6.2. Debugger Commands

~ (tilde)

bitwise negation operator: 4.5.2. Unary Operators
suppressing output whitespace: 4.12. Formats
~~ to print strings in fields: 4.12. Formats

_ (underscore)

_ _END_ _ constant: 4.4.4. Global Special Constants
_ _END_ _ marker: 8.5. AutoLoader
_ _FILE_ _ constant: 4.4.4. Global Special Constants
filehandle: 4.4.3. Global Special Filehandles
improving number legibility: 4.2.1. Numbers
_ _LINE_ _ constant: 4.4.4. Global Special Constants
_ _PACKAGE_ _ constant: 4.4.4. Global Special Constants

| (vertical bar)

format fieldholders: 4.12. Formats
OR bitwise operator: 4.5.10. Bitwise Operators
Perl debugger command: 6.2. Debugger Commands
regular expression metacharacter: 4.6.2. Regular Expression Syntax
|= (assignment) operator: 4.5.6. Assignment Operators
|| Perl debugger command: 6.2. Debugger Commands
||= (assignment) operator: 4.5.6. Assignment Operators

Numbers

038 (octal value) sequence: 4.6.3. Escaped Sequences

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