... language source file
.cc, .cpp C+ + language source file
.h Header file
.m Objective- C source file
.mm Objective- C+ + source file
.pl Perl source file
.o Object (compiled) file
Objective- C source files ... 429
Using NSData to Create Custom Archives 436
Using the Archiver to Copy Objects 439
Exercises 441
20 Introduction to Cocoa and Cocoa Touch 443
Framework Layers 443
Cocoa Touch 444
21 Writing ... entire C language
before learning Objective- C is wrong. C is a procedural language containing many features
that are not necessary for programmingin Objective- C, especially at the novice level. In
fact,...
... instance or object contains not only information about its initial
characteristics acquired from the factory, but also its current characteristics.Those charac-
teristics can change dynamically.As ... http://www.simpopdf.com
24
Chapter 2 Programmingin Objective- C
The percent character inside the first argument is a special character recognized by the
NSLog function.The character that immediately ... in mind when writing a particular program or a particular sequence of statements.
You can insert comments into an Objective- C program in two ways. One is by using
two consecutive slash characters...
... alloc] init];
Calculator *deskCalc;
deskCalc = [[Calculator alloc] init];
[deskCalc clear];
[deskCalc setAccumulator: 100.0];
[deskCalc add: 200.];
[deskCalc divide: 15.0];
[deskCalc subtract: ... a single character enclosed in
single quotes, with a C- style character string, which is any number of characters enclosed
in double quotes.As mentioned in the last chapter, a string of characters ... rule cited previously.The reason for this is that the
backslash character is a special character in the Objective- C system and does not actually
count as a character. In other words, the Objective- C...
... of programmingin Objective- C
rests on the extensive frameworks that are available.
Chapter 2, Programmingin Objective- C, ” begins by teaching you how to write your
first program in Objective- C.
Because ... be
printed at the points indicated by the next two occurrences of the %i characters in the
format string.
Summary
After reading this introductory chapter on developing programs in Objective- C, you
should ... Object, Anyway? 27
Instances and Methods 28
An Objective- C Class for Working with Fractions 30
The @interface Section 33
Choosing Names 34
Class and Instance Methods 35
The @implementation Section...
... ShoppingCart.cs. The
ShoppingCart represents a collection of Product objects.
Listing 3-11. The ShoppingCart class
using System.Collections.Generic;
namespace LanguageFeatures {
public class ShoppingCart ... interface. Listing 3-14 shows the ShoppingCart class updated to implement the
IEnumerable<Product> interface.
Listing 3-14. Implementing an interface in the ShoppingCart class
using System.Collections.Generic;
using ... Summary.aspx.cs code-behind file
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
namespace...
... // Calculate the radius
circumference = 2.0f*Pi*radius; // Calculate the circumference
area = Pi*radius*radius; // Calculate the area
printf("\nThe circumference is %.2f", circumference);
... objectives of the
code as well as the specifics of how the code works.
CHAPTER 2 ■ FIRST STEPS IN PROGRAMMING
51
This time you’ll have a go at calculating the circumference and area of a circular ... used currently for developing mobile phone apps in
the form of Objective C. ObjectiveC is standard C with a thin veneer of object-oriented programming capability
added. C is easy to learn because...
... to: innovations in fingerprint development,
* By David A. Stoney, Ph.D., Director, McCrone Research Institute, Chicago, and Clinical
Professor of Forensic Science, University of Illinois at Chicago.
0923Ch01Frame ... determining the general
pattern area of the latent print, a reference point is selected by the examiner
to begin the search for matching characteristics in the inked print. The
reference point ... German police forces
commenced fingerprinting: Augsburg, Hamburg, and Nuremburg. In 1912,
a conference of all German police forces took place in Berlin, at which it was
concluded that identification...
... of a Class of Objects
18
Creating a Class
19
Running the Program
21
Organizing Classes and Class Behavior
24
Inheritance
24
Creating a Class Hierarchy
26
Inheritance in Action
28
Single ... line 1 and the closing brace
(“}”) on line 18 is part of this class.
The
VolcanoRobot class contains three instance variables and two instance methods.
The instance variables are defined in lines ... 441
Checking an Object’s Serialized Fields
442
Inspecting Classes and Methods with Reflection
443
Inspecting and Creating Classes
443
Working with Each Part of a Class
445
Inspecting a Class
447
Summary
...
... transactions
.
ROLLBACK—Undoes database transactions
.
SAVEPOINT—Creates points within groups of transactions in which to
ROLLBACK
.
SET TRANSACTION—Places a name on a transaction
Transactional commands ... designed to maintain specific information about every
record in the table. The fields in the PRODUCTS_TBL table consist of PROD_ID,
PROD_DESC, and COST. These fields categorize the specific information ... Exercises 383
Windows Installation Instructions for MySQL . 383
Windows Installation Instructions for Oracle . 386
Windows Installation Instructions for Microsoft SQL Server . 388
APPENDIX C: ...
... Statement
Constructing the CRC Cards
Classes
Responsibilities
Collaborators
The Tenant CRC Card
The Expense CRC Card
The Rent Input Screen CRC card
The Rent Record CRC Card
The Expense Input Screen CRC ... Class Members
A User-Defined String Type
The Standard C+ + string Class
Defining and Assigning string Objects
Input/Output with string Objects
Finding string Objects
Modifying string Objects
Comparing ... and Base Class
Specifying the Derived Class
Accessing Base Class Members
The protected Access Specifier
Derived Class Constructors
Overriding Member Functions
Which Function Is Used?
Scope Resolution...
... //for cout, etc.
using namespace std;
int main()
{
char charvar1 = ‘A’; //define char variable as character
char charvar2 = ‘\t’; //define char variable as tab
cout << charvar1; //display character
cout ... character
cout << charvar2; //display character
charvar1 = ‘B’; //set char variable to char constant
cout << charvar1; //display character
cout << ‘\n’; //display newline character
return ... backslash causes an
“escape” from the normal way characters are interpreted. In this case the t is interpreted not as
the character ‘t’ but as the tab character. A tab causes printing to continue...
...
when the object is accessed.
c) A static constructor can have
public as a accessibility
modifiers
74. class A
{
public static int X = B.Y + 1;
}
class B
{
public static int Y = A.X ... explicitly or implicitly.
b) Static constructors can have
accessibility modifiers.
e) Static constructors are called
when the class is loaded.
c) Static constructors cannot
be called ...
error.
c) Incompatible type for ’=’
can’t convert SubClass to
SuperClass.
b) No constructor matching
SuperClass() found in class
SuperClass
d) Wrong number of arguments
in constructor....