Index

U

W

 u option

wantarray() built in, using with functional 

using with cvs diff, 154

interfaces, 79

using with patches, 145

warn() API function, using, 201

UML state diagrams, depicting events in, 258

WeakRef module, using, 44

UML (Unified Modeling Language)

Web sites

performing visual modeling with, 92

Artistic License, 127

state machines depicted with, 258

Bugzilla, 161

unary operators, overloading, 51 52

CPAN, 1

unified diff format, using with patches, 146

CPAN browsing, 12

UNIVERSAL base class, inheriting from, 

CPAN entry screen, 6

47 48

CPAN network interactive exploration, 3

UNIX systems, installing CPAN modules on, 

CPAN's bug tracking service, 159 160

14

CPAN search engines, 12 13

upper() function, using with references, 37

CVS (Concurrent Versions Systems), 

use lib statement, using, 29

149

use lines in Counter.pm file generated by 

CVS resources, 159

h2xs program, 102

CygWin utility, 17

use statement, using with modules, 22

DBI module, 169

user communities, growing, 139 142

Ezmlm, 142

free software, 2 3

V

freshmeat, 163

Gnome, 205

values

GPL (General Public License), 127

returning in functional interfaces, 

LWP project, 171

78 79

Majordomo, 142

returning with Inline::C, 248 250

mirrors, 4, 15

Vanguard Media Web site, 28

Perl internals tutorial, 204

$var placeholder variables, using with 

perl packrats mailing list archives, 3

typemaps, 234

qmail, 142

variables

RFC 2046 (MIME types), 205

accessing in Perl environment, 197

Sendmail, 142

advisory about types and names of, 25

SourceForge site, 141

creating in packages, 24

Vanguard Media, 28

exporting, 33

WinZip utility, 17

version dependence, compatibility of, 

WinZip utility, downloading, 17

125 126

wrappers, using with Perl C API, 202 203

version incompatibility, discovering with 

write() method

Makefile.PL file generated by h2xs, 107

overriding, 46

VERSION() method, using, 47

timestamping log lines with, 46

version numbers, including in module 

using, 41 42

distributions, 134

WriteMakefile() subroutine, role in 

$VERSION variable, setting up for 

Makefile.PL file generated by h2xs, 106

Counter.pm file generated by h2xs 

program, 102

void return types versus PPCODE blocks, 249

28

287

7