Symbols & Numbers | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Index: U

undef (value)

autovivification and: 4.7. Autovivification

filesystem capture example: 7.6. Building Recursively Defined Data

ref operator and: 9.6. Making a Method Work with Either Classes or Instances

variables with value of: 6.7. Closure Variables as Static Local Variables

weak references and: 10.6. Weakening the Argument

unimport method (Exporter): 12.10. Exporting in a Primarily OO Module

UNIVERSAL class

inheritance and: 8.5. A Few Notes About @ISA

purpose of: 11.1. UNIVERSAL Methods

utility methods: 11.2. Testing Your Objects for Good Behavior

11.2. Testing Your Objects for Good Behavior

unshift function: 2.5.1. Extending @INC

12.7. Setting the Path at the Right Time

URIs (universal resource identifiers): 12.10. Exporting in a Primarily OO Module

URI::URL module: 12.10. Exporting in a Primarily OO Module

url subroutine (URI::URL): 12.10. Exporting in a Primarily OO Module

use base: 8.5. A Few Notes About @ISA

use CGI: 12.11. Custom Import Routines

use lib: 12.7. Setting the Path at the Right Time

12.7. Setting the Path at the Right Time

13.10. Using the Alternate Library Location

use operation: 12.6. What use Is Doing

13.3. The Prototype Module Itself

14.3. Writing Tests with Test::More

14.3. Writing Tests with Test::More

use strict: 8.1. If We Could Talk to the Animals...

8.5. A Few Notes About @ISA

Copyright © 2003 O'Reilly & Associates, Inc. All Rights Reserved.