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Index: Symbols

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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