... QMenus, and QMenuBars 327
10.2 Regions and QDockWidgets 337
10.3 QSettings: Saving and Restoring Application State 339
10.4 Clipboard and Data Transfer Operations 341
x An Introduction to Design Patterns ... Connecting to SQL from Qt 541
18.2 Queries and Result Sets 546
18.3 Database Models 548
18.4 Review Questions 549
xii An Introduction to Design Patterns in C++...
... 1 instances of Person
in Company and 0 to 1 instances of Employee in Company. The diamonds
indicate the aggregation of classes within Company.
If there can be many instances of a class inside ... but there can
only be one instance of “COM1.”
Creating Singleton Using a Static Method
The easiest way to make a class that can have only one instance is to
embed a static variable in...
... Companion. Finally, we
recently published Java Design Patterns: a Tutorial, and Visual Basic
Design Patterns, which illustrate all of these patterns in those languages.
Defining Design Patterns ...
you always
Program to an interface and not to an implementation.
Putting this more succinctly, you should define the top of any class
hierarchy with an abstract clas...
... Companion. Finally, we
recently published Java Design Patterns: a Tutorial, and Visual Basic
Design Patterns, which illustrate all of these patterns in those languages.
Defining Design Patterns ...
you always
Program to an interface and not to an implementation.
Putting this more succinctly, you should define the top of any class
hierarchy with an abstract clas...
... related to the Internet and Web browsers in Section 0.4.
4 Chapter 0 Introduction to Computers and Programming Languages
network
LAN
WAN
internet
If you want to learn more about the history of ... is
executed and the user enters abc123 and 14?
Scanner scanner = new Scanner(System .in) ;
try {
int num1 = scanner.nextInt();
System.out.println("Input 1 accepted");
int num2 =...
... increased cancer cases. It is often difficult to determine
if an increase in cancer in humans is due to exposure to a
particular substance, since exposure may have occurred
many years before, and ... source before it spreads into the room and into
Engineering controls
__
25
your breathing zone. All ventilation systems require careful
engineering design and regular maintenan...
... resistors, each with a
20% tolerance. Calculate the mean, variance, and tolerance of the resis-
tance of their series combination. Is the tolerance of this combination
less than the tolerance ... vari-
ances.
Forinstance, suppose we wish to express the mean and variance of the area
A of a rectangular plot of land in terms of the mean and variance of its length L
and width W.IfL and W .....
... also
an excellent tutorial on the ins and outs of C++ is an added bonus.”
Andrew Binstock
Editor, Unix Review
“Bruce continues to amaze me with his insight into C++, and
Thinking in C++
... are thinking about
design
, not simply coding. And
to understand C++ this way, you must understand the problems
with C and with programming in general. This book discusses
p...