objective c programming big nerd ranch pdf download

... public Access not limited protected Access limited to this class and classes derived from this class internal Access limited to this program protected internal Access limited to this program and classes ... static modifier is an instance method. An instance method operates on a specific instance and can access both static and instance members. The instance on which an instance method was invoked can ... public static readonly Color White = new Color(255, 255, 255); public static readonly Color Red = new Color(255, 0, 0); public static readonly Color Green = new Color(0, 255, 0); public static readonly

Ngày tải lên: 12/08/2014, 23:23

... ChatCallback(); InstanceContext clientContext = new InstanceContext(callbackObject); ChatServiceClient chatProxy = new ChatServiceClient(clientContext); This wraps the callback object in an InstanceContext—this ... cache, but you can enable caching by setting the request’sCachePolicy, as Example 13-20 shows Trang 31Example 13-20 Setting cache policyHttpRequestCachePolicy cachePolicy = new HttpRequestCachePolicy( ... PostNote(string note) { IChatClient clientCallback = OperationContext.Current.GetCallbackChannel<IChatClient>(); string name = clientsAndNames[clientCallback]; Console.WriteLine("{0}:

Ngày tải lên: 06/08/2014, 09:20

... stroke 750 | Chapter 20: WPF and... and a single cubic Bezier curve segment, indicated with the C command Example 20-11 Path with Bezier curve and straight edges Cubic Bezier curves require ... top-left corner of the Canvas.) Notice that the Canvas sizes children based on how much space they require—similar to the Auto rows and columns, but in this case the buttons are sized to content ... offers attachable properties to specify which grid cells elements occupy, Canvas defines at- tachable Left and Top properties that specify where the elements should appear. Example 20-6. Explicit positioning

Ngày tải lên: 06/08/2014, 09:20

... will never be more than one character of pushback Modify getchandungetchaccordingly Exercise 4-9 Our getch and ungetch do not handle a pushed-back EOF correctly Decidewhat their properties ought ... characters plus the terminating'\0'). 4.10 Recursion C functions may be used recursively; that is, a function may call itself either directly orindirectly Consider printing a number as a character ... thegetch-ungetchcombination, which must be external so they can be shared, yet which should not be visible to users ofgetchandungetch Static storage is specified by prefixing the normal declaration

Ngày tải lên: 06/08/2014, 09:20

... of l L character-literal: ’c-char-sequence’ L’c-char-sequence’ c-char-sequence: c-char c-char-sequence c-char c-char: any member of the source character set except the single-quote, backslash, ... backslash, or new-line character escape-sequence universal-character-name escape-sequence: simple-escape-sequence octal-escape-sequence hexadecimal-escape-sequence simple-escape-sequence: one of \’ \" ... \v octal-escape-sequence: \ octal-digit \ octal-digit octal-digit \ octal-digit octal-digit octal-digit hexadecimal-escape-sequence: \x hexadecimal-digit hexadecimal-escape-sequence hexadecimal-digit

Ngày tải lên: 12/08/2014, 19:21

... SelectCommand's Connection SqlConnection connection = (SqlConnection) dataAdapter.SelectCommand.Connection; // Create an explicit, reusable insert command dataAdapter.InsertCommand = connection.CreateCommand( ... SqlConnection connection = (SqlConnection) dataAdapter.SelectCommand.Connection; // Create an explicit, reusable insert command dataAdapter.InsertCommand = connection.CreateCommand( ); dataAdapter.InsertCommand.CommandText ... {1}", calc.Add(3,5), calc.Mult(3,5)); } } } // calling this adds the Fraction assembly public void UseFraction( ) { ProgCS.Fraction frac1 = new ProgCS.Fraction(3,5); ProgCS.Fraction frac2 = new

Ngày tải lên: 12/08/2014, 23:22

... Since Cos( ) is static, you don't need to construct an instance of System.Math (and you can't, since System.Math has no public constructor) The Activator class contains four methods, all static, ... which you can use to create objects locally or remotely, or to obtain references to existing objects The four methods are CreateComInstanceFrom, CreateInstanceFrom, GetObject, and CreateInstance: ... CreateInstance: CreateComInstanceFrom Used to create instances of COM objects Trang 19Object theObj = Activator.CreateInstance(someType); Back to the Cos( ) example, you now have one object in hand:

Ngày tải lên: 12/08/2014, 23:22

... the Technical Reviewers Michael Trent has been programming in Objective-C since 1997—and programming Macs since well before that He is a regular contributor to Steven Frank’s www.cocoadev.com Web ... site, a technical reviewer for numerous books and magazine articles, and an occasional dabbler in Mac OS X open source projects Currently, he is using Objective-C and Apple Computer’s Cocoa frameworks ... applications for Mac OS X Michael holds a Bachelor of Science degree in computer science and a Bachelor of Arts degree in music from Beloit College of Beloit,Wisconsin He lives in Santa Clara, California,

Ngày tải lên: 12/08/2014, 23:22

... thebackslash character is a special character in the Objective-C system and does not actuallycount as a character In other words, the Objective-C compiler treats the character ’\n’as a single character, ... @character is an NSStringcharacter string ject ob-NoteAppendix B discusses methods for storing characters from extended character sets, through special escape sequences, universal characters, ... wide characters. The character constant ’\n’, the newline character, is a valid character constant eventhough it seems to contradict the rule cited previously.The reason for this is that thebackslash

Ngày tải lên: 12/08/2014, 23:22

... definitions for ClassA and ClassB here int main (int argc, char *argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; ClassA *a = [[ClassA alloc] init]; ClassB *b = [[ClassB alloc] init]; ... oriented programming languages such as C++.This chapter describes three key concepts: polymorphism, dynamic typing, and dynamic binding Polymorphism enables programs to... object-oriented programming ... Rectangle object itself because none of the variables contained in an object is valid after an object’s memory is released. So the correct code se- quence would be as follows: [[myRect origin] release];

Ngày tải lên: 12/08/2014, 23:22

... definition of the class and is notgood programming practice category can exist in a given Objective-C namespace.This can be tricky because the jective-C namespace is shared between the program code and ... methods. Notice that the protocol doesn’t reference any classes; it s classless Any class can You can check to see whether an object conforms to a protocol by using the conformsToProtocol:method ... expressions such as this: if ( IS_LOWER_CASE (c) ) You can even use this macro in another macro definition to convert a character fromlower case to upper case, leaving any nonlowercase character unchanged:

Ngày tải lên: 12/08/2014, 23:22

... either an array of type char or a literal C-style character string, but not a character string object. Trang 11Constant Character Strings and PointersThe fact that the callcopyString (string2, “So ... a constantcharacter string is used in Objective-C, a pointer to that character string is produced This point might sound a bit confusing now, but, as we briefly noted in Chapter 4,constant character ... key conceptswhen dealing with pointers in Objective-C Pointers and Arrays If you have an array of 100 integers called values, you can define a pointer called valuesPtr, which you can use to access

Ngày tải lên: 12/08/2014, 23:22

... AddressCard *card1 = [[AddressCard alloc] init]; AddressCard *card2 = [[AddressCard alloc] init]; AddressCard *card3 = [[AddressCard alloc] init]; AddressCard *card4 = [[AddressCard alloc] init]; ... AddressCard *card1 = [[AddressCard alloc] init]; AddressCard *card2 = [[AddressCard alloc] init]; AddressCard *card3 = [[AddressCard alloc] init]; AddressCard *card4 = [[AddressCard alloc] init]; ... @”tony.iannino@techfitness.com”; AddressCard *card1 = [[AddressCard alloc] init]; AddressCard *card2 = [[AddressCard alloc] init]; [card1 setName: aName andEmail: aEmail]; [card2 setName: bName

Ngày tải lên: 12/08/2014, 23:22

... objects from inside amethod, for later disposal Reference CountingWhen we talked about the basic Objective-C object class NSObject, we noted that mem-ory is allocated with the allocmethod and can ... straightforward technique called reference counting.The concept is as follows:When an object is created, its reference count is set to1 Each time you need to ensure that the object be kept around, you incrementits ... according to the <NSCopying>protocol We now show how you can add a copymethod to your Fractionclass, which youused extensively in Part I,“The Objective-C 2.0 Language.” Note that the techniques

Ngày tải lên: 12/08/2014, 23:22

... Objective-C language abstract class A class defined to make creating subclasses easier Instances are created from the subclass, not of the abstract class See also concrete subclass accessor method A method ... (displayString).There is also a Calculator object (myCalculator) that can perform the actual calculation between the two fractions.We will associate a single method called clickDigit: to handle the pressing ... not currently se- lected, click the label you just created to select it. Notice that the Inspector window auto- matically changes to give you information about the currently selected object in

Ngày tải lên: 12/08/2014, 23:22

... Appendix B Objective-C 2.0 Language Summary declares myFract to be an object of type Fraction—or more explicitly, myFract is used to hold a pointer to the object’s data structure after an instance of ... in the class and instance methods in any category extensions to the class, but not by any subclasses This restricts access to the class itself @public By instance methods in the class, ... the truncation occurs Storage Classes and Scope The term storage class refers to the manner in which memory is allocated by the compiler in. .. the following begins an interface declaration

Ngày tải lên: 12/08/2014, 23:22

... active object class here, but I discuss active objects fully in Chapters 8 and 9. The active object class must be passed a means to access the RMessage associated with the client request, which ... inline CShutdown::CShutdown() : CTimer(-1) {CActiveScheduler::Add(this);} inline void CShutdown::ConstructL() {CTimer::ConstructL();} inline void CShutdown::Start() {After(KShutdownDelay);} void CShutdown::RunL() ... expires CActiveScheduler::Stop(); } The CServer-derived object owns a CShutdown object. As I des- cribed above, the server reference-counts its connected client sessions. The shutdown timer object

Ngày tải lên: 13/08/2014, 08:21

... follow your customs,and I´ll follow mine. – C Napier C/C++ compatibility — silent differences between C and C++ — C code that is not C++ — deprecated features — C++ code that is not C — coping with ... explicit Program-type conversion is necessary, s st ta ti ic c_ _c ca as st t, r re ei nt er rp re et t_ _c ca as st t, c co on ns st t_ _c ca as st t, or a combination of these can do what a C-style ... opt class-name virtual access-specifier opt :: opt nested-name-specifier opt class-name access-specifier virtual opt :: opt nested-name-specifier opt class-name access-specifier: private protected

Ngày tải lên: 12/08/2014, 19:21

... character constant is an integer, written as one character within single quotes, such as'x' The value of a character constant is the numeric value of the character in the machine'scharacter set ... numerical value of the character in the machine's character set This is called a character constant, although it is just another way to write a small integer So, for example, 'A' is a characterconstant; ... to Functions 98 5.12 Complicated Declarations 100 Chapter 6 - Structures 105 6.1 Basics of Structures 105 6.2 Structures and Functions 107 6.3 Arrays of Structures 109 6.4 Pointers to Structures

Ngày tải lên: 16/08/2012, 11:09

... generic cc compiler or the Free Software Foundation's gcc compiler. For MS-DOS/Windows users, instructions are included for Borland C++, Turbo C++, and Microsoft Visual C++. (These compilers compile ... Determining Accuracy Precision and Speed Power Series Programming Exercises III. Advanced Programming Concepts 17. Advanced Pointers Pointers and Structures free Function Linked List Structure Pointer ... login ok, access restrictions apply ftp> cd /published/oreilly/nutshell /practical_ c3 250 CWD command successful ftp> binary 200 Type set to I ftp> get examples.tar.gz 200 PORT command successful

Ngày tải lên: 12/12/2013, 22:15