Mastering Perl, 2nd Edition

Index

Symbols

# (hash symbol), Writing in Binary

$! variable, Perl Error Basics, Operating System Errors

$0 variable, Scripts with a Different Name

$? variable, Perl Error Basics, Child Process Errors, Left << and Right >> Shift Operators

$@ variable, Perl Error Basics, eval–autodie

$_ variable, Safe Compartments, The Symbol Table

% (modulus) operator, Subroutines as Data

%! hash, Operating System Errors

& (AND) operator, Bitwise AND (&)–Bitwise AND (&)

(?!PATTERN) lookaheads, Negative lookahead assertions–Negative lookahead assertions

(?#...) sequence, Readable Regexes, /x and (?#…)

(?1) syntax, Repeating a Subpattern–Repeating a Subpattern

(?<!PATTERN) lookbehinds, Lookbehind Assertions, (?<!PATTERN) and (?<=PATTERN)

(?<=PATTERN) lookbehinds, Lookbehind Assertions, (?<!PATTERN) and (?<=PATTERN)

(?=PATTERN) lookaheads, Positive lookahead assertions–Positive lookahead assertions

*_ variable, Safe Compartments

// (defined-OR) operator, Turning on Extra Output

/x flag, Readable Regexes, /x and (?#…)

: (colon), JSON

<< (left shift) operator, Left << and Right >> Shift Operators

>> (right shift) operator, Left << and Right >> Shift Operators

@_ variable, Safe Compartments, The Symbol Table, Subroutines as Arguments

^ (exclusive OR) operator, Exclusive OR (^)–Exclusive OR (^)

| (OR) operator, Binary OR (|)–Binary OR (|)

|| (short circuit) operator, Turning on Extra Output

~ (NOT) operator, Unary NOT (~)

A

Aas, Gisle, Readable Regexes, /x and (?#…), The perlbench Tool

.al file, AutoSplit

aliasing variables, Aliasing ...