Index: Symbols & Numbers

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## Index: Symbols & Numbers

- (hyphen)
  -0 command-line option: 8.. Basic Operations
  -a command-line option, writing filters: 7.14.3.2. Command-line options
  -e command-line option, writing filters: 7.14.3.2. Command-line options
  -> (arrow) operator: 11.. References
    13.. Methods
  -> (infix) notation: 11.. References
  -i command-line option
    modifying files with: 7.16.2. Solution
    writing filters: 7.14.3.2. Command-line options
  -I command-line switch: 12.8.2. Solution
  -n command-line option, writing filters: 7.14.3.2. Command-line options
  -p command-line option
    modifying files with: 7.16.2. Solution
    writing filters: 7.14.3.2. Command-line options
  -t command-line option: 15.2.2. Solution
- (minus sign), modifiers and: 6.18.3. Discussion
( ) (parentheses): 1.. Introduction
  autouse pragma: 12.3.3. Discussion
  prototyping functions: 10.11.3.1. Omitting parentheses
  substitution: 6.1.3. Discussion
* (asterisk), typeglobs: 7.5.1. Problem
@ (at sign)
  @_ array: 10.1.2. Solution
  @EXPORT array (use pragma): 12.1.3. Discussion
  @EXPORT_OK array (use pragma): 12.1.3. Discussion
  @EXPORT_TAGS array (use pragma): 12.1.3. Discussion
  @INC array: 12.8.3. Discussion
  references to arrays: 11.1.2. Solution
  splice( ): 4.12.3. Discussion
\ (backslash)
  \1, \2, . . . (backreferences): 6.16.2. Solution
  ` string metacharacter: 1.18.3. Discussion
  \a for terminal bell: 15.7.2. Solution
  creating arrays: 11.6.2. Solution
  creating references: 11.. Anonymous Data
  \E string metacharacter: 1.18.3. Discussion
  escaping characters: 1.18.1. Problem
  \G anchor: 6.14.3. Discussion
  \l string escape: 1.13.2. Solution
  references to arrays: 11.1.3. Discussion
  references to scalars: 11.5.2. Solution
  \u string escape: 1.13.2. Solution
  \X metacharacter: 1.8.3. Discussion
` (backtick)
  executing commands without shell escapes: 19.5.3. Discussion
  expanding: 1.15.3. Discussion
  gathering program output: 16.1.2. Solution
  running another program: 16.2.3. Discussion
: (colon)
  module names: 12.. Modules
  package names: 12.. Introduction
, (comma)
  in numbers: 2.16.1. Problem
  printing lists with: 4.2.1. Problem
-0 command-line option: 8.. Basic Operations
{} (curly braces): 1.. Introduction
  creating anonymous arrays and hashes: 11.. References
$ (dollar sign)
  $1, $2, . . . (backreferences): 1.11.3. Discussion
    6.. Special Variables
    finding doubled words: 6.16.2. Solution
  $| variable: 7.. I/O Operations
    7.19.2. Solution
  $* variable (deprecated): 6.. Pattern-Matching Modifiers
  $& variable: 1.11.3. Discussion
    6.. Special Variables
  $#ARRAY variable: 4.3.2. Solution
  $^F variable: 12.7.3. Discussion
  hashes: 5.. Introduction
  $^I variable: 7.16.3. Discussion
  $^O variable: 7.25. Program: lockarea
    9.10.3. Discussion
  $VERSION variable (use pragma): 12.1.3. Discussion
  $^W variable: 12.14.3. Discussion
. (dot)
  . . and . . . range operators: 6.8.2. Solution
  period in numbers: 2.16.1. Problem
= (equals sign)
  =~ operator: 1.1.3. Discussion
  =begin pod directive: 12.20.3. Discussion
  =end pod directive: 12.20.3. Discussion
  => operator: 5.. Introduction
/ (forward slash)
  /e substitution modifier: 1.12.3. Discussion
    6.. Pattern-Matching Modifiers
  /g pattern-matching modifier: 6.. Pattern-Matching Modifiers
    finding Nth matches: 6.5.2. Solution
    where last pattern ended: 6.14.3. Discussion
  /i pattern-matching modifier: 6.. Pattern-Matching Modifiers
  /m pattern-matching modifier: 6.. Pattern-Matching Modifiers
    multiple lines: 6.6.2. Solution
  /o pattern-matching modifier: 6.10.2. Solution
  root directory: 9.. Introduction
  /s pattern-matching modifier: 6.. Pattern-Matching Modifiers
    multiple lines: 6.6.2. Solution
  /x pattern modifier: 1.12.3. Discussion
    comments in regular expressions: 6.4.3. Discussion
% (percent sign)
  hashes: 5.. Introduction
  %SIG hash: 16.15.2. Solution
+ (plus sign), file-access modes: 7.1.3. Discussion
# (pound sign), with printf( ): 2.15.3. Discussion
' (single quote): 1.. Introduction
  escaping: 14.10.1. Problem
[] (square brackets): 1.. Introduction
  creating anonymous arrays and hashes: 11.. References
~ (tilde), in filenames, expanding: 7.3.1. Problem
_ (underscore), file stat cache: 9.. Introduction
$0 variable: 7.12.3. Discussion
| (vertical bar)
  ||= (assignment) operator: 1.2.2. Solution
  || operator
    vs. or operator: 1.2.3. Discussion
    separating multiple comparisons: 4.16.3. Discussion
& (ampersand), && operator: 1.2.3. Discussion
> (right angle bracket), file-access modes: 7.. I/O Operations
  7.1.3. Discussion
< (left angle bracket)
  file-access modes: 7.. I/O Operations
    7.1.3. Discussion
  <&= and <& open modes: 7.9.2. Solution
  <FH> line input operator: 7.. I/O Operations
  <=> numerical comparison operator: 4.15.2. Solution
<> (angle brackets): 1.. Introduction
  globbing: 9.6.2. Solution
  line input operator: 7.14.2. Solution
  reading strings from binary files: 8.14.2. Solution
" (double quote): 1.. Introduction
  escaping: 14.10.1. Problem

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