Learning Perl, Fourth Edition

Index

Symbols

#! line, portability, What’s Inside That Program?

$_ default variable, Perl’s Favorite Default: $_

.. (range operator), The qw Shortcut

/g modifier (global replacements), Global Replacements with /g

/i, case-insensitive matching, Option Modifiers

/s, any character match in regular expressions, Option Modifiers

<> diamond operator, Input from the Diamond Operator

<STDIN> operator, list context, Forcing Scalar Context

=~ (binding operator), The Binding Operator, =~

m// and, Option Modifiers

@ (at sign), array referencing, The pop and push Operators

@ARGV array, The Invocation Arguments

^ (caret), character classes, Character Class Shortcuts

_filehandle, Using the Special Underscore Filehandle

| (bar), regular expressions, Grouping in Patterns

A

access

array elements, Accessing Elements of an Array

databases, Databases

hash elements, Hash Element Access

algorithms, high-water mark, Empty Parameter Lists

ampersand, subroutines, Omitting the Ampersand

anchors

regular expressions, Word Anchors

word anchors, Word Anchors

answers to exercises, Answers to Chapter 2 Exercises

arguments

invocation, Input from the Diamond Operator, The Invocation Arguments

subroutines, Arguments

passing, Arguments

array slices, Array Slice

arrays, Lists and Arrays

@ sign, The pop and push Operators

@ARGV, Input from the Diamond Operator

bits, Bits and Pieces

elements

access, Accessing Elements of an Array

foreach control, The foreach Control Structure

grep and, map and grep

indices, Special Array Indices, What Is a Hash?

interpolation ...