Effective Perl Programming: Ways to Write Better, More Idiomatic Perl, Second Edition

Index

Symbols

& (ampersand), sigil for subroutines, 17

&&, and operator used in place of, 67–68

$ anchor, 124

$ (dollar sign), sigil for scalars, 17

$_ (dollar underscore)

built-ins that use, 58

as default for many operations, 53–54

localizing, 55

main package and, 54

-p switch and, 430

programming style and, 55–56

$’ match variable, 117

$` match variable, 117

$. special variable, 429–430

$& match variable, 117

$1, $2, $3 capture variables, 103–105

$@, for handling exceptions, 365, 370–371

$dbh, per-class database connections, 389

$^C variable, 426

“ ” (double quotes), options for quote strings, 73–74

%+ hash, labeled capture results in, 114–115

% (percent symbol), sigil for hashes, 17

( ) [ ], forcing list context, 60

( ) (parentheses). See ...