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Learning Perl, 3rd. Ed.Search this book

Symbols & Numbers | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Index: Symbols & Numbers

-- autodecrement operator: 10.6. Autoincrement and Autodecrement
` ` backquotes/backticks: 1.5. A Whirlwind Tour of Perl
14.4. Using Backquotes to Capture Output
{ } curly braces (see curly braces)
- hyphen: 6.2. Input from the Diamond Operator
8.1. Character Classes
( ) parentheses (see parentheses)
' ' single quotes: 2.3.1. Single-Quoted String Literals
[ ] square brackets: 7.3. A Pattern Test Program
8.1. Character Classes
- subtraction operator: 2.2.5. Numeric Operators
+ addition operator: 2.2.5. Numeric Operators
.= append operator: 2.5.3. Binary Assignment Operators
@_ array variable: 4.5. Arguments
= assignment operator: 2.5.2. Scalar Assignment
@ at-sign: 3.4. List Assignment
++ autoincrement operator: 10.6. Autoincrement and Autodecrement
\\\\ backslash: 2.3.1. Single-Quoted String Literals
8.4.1. Backreferences
=~ binding operator: 9.3. The Binding Operator, =~
^ caret anchor: 8.3. Anchors
, comma: 5.2.3. The Big Arrow
$_ default variable (see default variable)
/ division operator: 2.2.5. Numeric Operators
$ dollar sign (see dollar sign)
. dot (see dot)
./ dot and slash: 1.4.1. A Simple Program
.. dot-dot: 13.3. Links and Files
-e command-line option: 16.4.1. In-place Editing from the Command Line
-eval option, find2perl command and: B.26. Converting find Command Lines to Perl
** exponentiation operator: 2.2.5. Numeric Operators
_ _FILE_ _ and _ _LINE_ _ tokens: 11.3. Fatal Errors with die
_ filehandle: 11.6.5. Using the Special Underscore Filehandle
-> little arrow: 5.2.3. The Big Arrow
13.8.3. The File::Spec Module
-i.bak command-line option: 16.4.1. In-place Editing from the Command Line
#! line: 1.4.2. What's Inside That Program?
1.5. A Whirlwind Tour of Perl
% modulus operator: 2.2.5. Numeric Operators
17.2. Picking Items from a List with grep
* multiplication operator: 2.2.5. Numeric Operators
-n command-line option: 16.4.1. In-place Editing from the Command Line
! negation operator (see negation operator)
. operator: 2.3.3. String Operators
-p command-line option: 16.4.1. In-place Editing from the Command Line
% percent sign (see percent sign)
| pipe: 11.1. What Is a Filehandle?
14.5. Processes as Filehandles
+ plus sign: 7.2.2. Simple Quantifiers
# pound sign: 1.4.2. What's Inside That Program?
? question mark: 7.2.2. Simple Quantifiers
**= raise to the power of operator: 2.5.3. Binary Assignment Operators
.. range operator: 3.3. List Literals
; semicolon (see semicolon)
* star: 7.2.2. Simple Quantifiers
. string concatenate operator: 2.5.3. Binary Assignment Operators
?\: ternary operator: 10.9.2. The Ternary Operator, ?:
~ tilde: 16.4. Variable-length (Text) Databases
~ tilde-prefix: 12.1. Moving Around the Directory Tree
_ underscore: 2.2.3. Integer Literals
4.10. The use strict Pragma
$! variable: 11.3. Fatal Errors with die
\\| vertical bar: 7.2.4. Alternatives
-w option: 2.4. Perl's Built-in Warnings
16.4.1. In-place Editing from the Command Line
vs. warnings pragma: B.6.6. The warnings Pragma
& ampersand: 4.3. Invoking a Subroutine
4.11.1. Omitting the Ampersand
$& variable: 9.5.2. The Automatic Match Variables
&& operator: 10.9. Logical Operators
10.9.3. Control Structures Using Partial-Evaluation Operators
&max subroutine: 4.5. Arguments
4.8.1. A Better &max Routine
@ARGV array: 6.3. The Invocation Arguments
$ARGV variable: 6.2. Input from the Diamond Operator
$atime (timestamp): 11.6.1. The stat and lstat Functions
changing: 13.7. Changing Timestamps
\\\\B nonword-boundary anchor: 8.3.1. Word Anchors
\\\\b word-boundary anchor: 8.3.1. Word Anchors
$ctime (timestamp): 11.6.1. The stat and lstat Functions
changing: 13.7. Changing Timestamps
%d conversion: 6.5. Formatted Output with printf
\\\\d shortcut: 8.1.1. Character Class Shortcuts
$dev (device number): 11.6.1. The stat and lstat Functions
\\\\E shortcut: 9.6.5. Case Shifting
__END__ marker: 10.8.1. The last Operator
%ENV hash: 14.3. The Environment Variables
%f conversion: 6.5. Formatted Output with printf
%g conversion: 6.5. Formatted Output with printf
/g modifier, s/// substitution operator and: 9.6.1. Global Replacements with /g
$gid (see group-ID)
=> big arrow: 5.2.3. The Big Arrow
17.4. Unquoted Hash Keys
> greater-than sign: 11.2. Opening a Filehandle
`Hello, world' program: 1.4.1. A Simple Program
/i modifier: 9.2.1. Case-insensitive Matching with /i
s/// substitution operator and: 9.6.3. Option Modifiers
$^I variable: 16.4. Variable-length (Text) Databases
$ino (inode number): 11.6.1. The stat and lstat Functions
\\\\l shortcut: 9.6.5. Case Shifting
@lines array variable: 1.5. A Whirlwind Tour of Perl
< less-than sign: 11.2. Opening a Filehandle
/m option: 17.5.2. Matching Multiple-line Text
$mode: 11.6.1. The stat and lstat Functions
$mtime (timestamp): 11.6.1. The stat and lstat Functions
changing: 13.7. Changing Timestamps
\\\\n shortcut: 1.4.2. What's Inside That Program?
within a single-quoted string: 2.3.1. Single-Quoted String Literals
.new files, renaming from .old files: 13.2. Renaming Files
$nlink (number of links): 11.6.1. The stat and lstat Functions
$now variable: 14.4. Using Backquotes to Capture Output
.old files, renaming to .new files: 13.2. Renaming Files
.plx file extension: 1.4.1. A Simple Program
.pm files: 7.1. What Are Regular Expressions?
$" variable: 3.5. Interpolating Arrays into Strings
"money numbers" (see decimals)
"" double quotes (see double quotes)
"short-circuit" logical operators: 10.9. Logical Operators
%s conversion: 6.5. Formatted Output with printf
/s modifier: 9.2.2. Matching Any Character with /s
s/// substitution operator and: 9.6.3. Option Modifiers
\\\\s shortcut: 8.1.1. Character Class Shortcuts
$size: 11.6.1. The stat and lstat Functions
\\\\u shortcut: 9.6.5. Case Shifting
$uid (see user-ID, numeric)
/usr/bin/perl: 1.4.2. What's Inside That Program?
/usr/local/bin/perl: 1.4.2. What's Inside That Program?
\\\\w characters: 8.3.1. Word Anchors
\\\\w shortcut: 8.1.1. Character Class Shortcuts
`wimla,' diamond operator and: 6.2. Input from the Diamond Operator
Ú Ú forward slashes: 7.2. Using Simple Patterns
9.1. Matches with m//


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