Index

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# Index: Symbols and Numbers

&& operator : 1.2. Establishing a Default Value
* to store filehandles
  7.0. Introduction
  7.16. Storing Filehandles in Variables
@_ array : 10.1. Accessing Subroutine Arguments
\ (backslash)
  escape characters : 1.13. Escaping Characters
  operator
    10.5. Passing Arrays and Hashes by Reference
    11.5. Taking References to Scalars
` (backtick)
  expanding : 1.10. Interpolating Functions and Expressions Within Strings
  operator
    16.1. Gathering Output from a Program
    19.6. Executing Commands Without Shell Escapes
  qx( ) : 4.1. Specifying a List In Your Program
, (comma)
  (see also CSV)
  4.2. Printing a List with Commas
  printing lists with commas : 4.2. Printing a List with Commas
$ variables
  $` variable : 6.0. Introduction
  $^W variable : 13.5. Using Classes as Structs
  $+ variable : 6.0. Introduction
  $' variable : 6.0. Introduction
  $; variable : 9.4. Recognizing Two Names for the Same File
  $/ variable : 8.0. Introduction
  $_ variable
    accidental clobbering : 4.4. Doing Something with Every Element in a List
    outlawing unauthorized use
      1.18. Program: psgrep
      13.15. Creating Magic Variables with tie
  $| variable
    7.0. Introduction
    7.12. Flushing Output
  $1, $2, ... (backreferences) : 6.0. Introduction
    finding duplicate words : 6.16. Detecting Duplicate Words
. (dot) in numbers : 2.17. Putting Commas in Numbers
.. and ... (range) operators : 6.8. Extracting a Range of Lines
=> (comma arrow) operator : 5.0. Introduction
=~ operator, s///, m//, and tr/// with : 1.1. Accessing Substrings
-> (infix) notation : 11.0. Introduction
-> operator : 13.0. Introduction
< > for globbing : 9.6. Globbing, or Getting a List of Filenames Matching a Pattern
< > (diamond) operator
  7.0. Introduction
  7.7. Writing a Filter
  8.0. Introduction
  17.0. Introduction
< access mode : 7.0. Introduction
<&= and <& open modes : 7.19. Opening and Closing File Descriptors by Number
<=> (comparison) operator : 4.14. Sorting an Array Numerically
% for hashes : 5.0. Introduction
> access mode : 7.0. Introduction
>> access mode : 7.0. Introduction
/ (root directory) : 9.0. Introduction
~ (tilde) in filenames, expanding : 7.3. Expanding Tildes in Filenames
_ (file stat cache) : 9.0. Introduction
|| operator : 1.2. Establishing a Default Value
||= (assignment) operator : 1.2. Establishing a Default Value
"0 but not true"
  10.10. Returning Failure
  17.2. Writing a TCP Server
-0 command-line option : 8.0. Introduction
"1 while" : 1.7. Expanding and Compressing Tabs
"500 Server Error", fixing : 19.3. Fixing a 500 Server Error

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