-u option using with cvs diff, 154 using with patches, 145
UML state diagrams, depicting events in, 258
UML (Unified Modeling Language) performing visual modeling with, 92 state machines depicted with, 258
unary operators, overloading, 51-52
unified diff format, using with patches, 146
UNIVERSAL base class, inheriting from, 47-48
UNIX systems, installing CPAN modules on, 14
upper() function, using with references, 37
use lib statement, using, 29
use lines in Counter.pm file generated by h2xs program, 102
use statement, using with modules, 22
user communities, growing, 139-142 |