Programming in Objective-C 2 0 edition phần 2 docx

... are dealing with a short int size of 16 bits: w1 00 00 000 0 00 01 01 01 0x15 w2 00 00 000 0 00 00 1 100 & 0x0c ——————————————————————————————————— w3 00 00 000 0 00 00 0 100 0x04 Bitwise ANDing is frequently ... 100 produces -1 .00 000 0 -1 50 divided by 100 .0 produces -1. 500 000 (float) -1 50 divided by 100 produces -1. 500 000 Whenever a floating-point value is assi...

Ngày tải lên: 12/08/2014, 23:22

... Reference David Beazley ISBN-13: 978 -0- 6 72- 328 62- 6 Programming in Objective-C Stephen G. Kochan ISBN-13: 978 -0- 321 -56615-7 PostgreSQL Korry Douglas ISBN-13: 978 -0- 6 72- 3 301 5-5 Developer’s Library books ... forming names in Objective-C. Choosing Names In Chapter 2, Programming in Objective-C, ” you used several variables to store integer values. For example, you...

Ngày tải lên: 12/08/2014, 23:22

... = 5, h = 8 Origin at ( 100 , 20 0) Area = 40, Perimeter = 26 Inside the main routine, you allocated and initialized a rectangle identified as myRect and a point called myPoint. Using the setX:andY: ... 50] ; NSLog (@”Origin at (%i, %i)”, myRect.origin.x, myRect.origin.y); [myRect release]; [myPoint release]; [pool drain]; return 0; } Program 8.5 Output Origin at ( 100 , 20 0) Origin...

Ngày tải lên: 12/08/2014, 23:22

... function finds the minimum integer value in an array containing a specified number of elements: // Function to find the minimum in an array int minimum (int values[], int numElements) { int minValue, ... 83 and 24 0 is %i”, gcd (83, 24 0) ); [pool drain]; return 0; } Program 13.5 Output The gcd of 1 50 and 35 is 5 The gcd of 1 02 6 and 405 is 27 The gcd of 83 and 24 0 is 1 Th...

Ngày tải lên: 12/08/2014, 23:22

... copied.” 2 ; char string2[ 50] ; copyString (string2, string1); NSLog (@”%s”, string2); copyString (string2, “So is this.”); NSLog (@”%s”, string2); [pool drain]; return 0; } Program 13.13 Output A string ... [[NSAutoreleasePool alloc] init]; NSString *str = @ Programming is fun”; NSLog (@”%@”, str); [pool drain]; return 0; } Program 15 .2 Output Programming is fun In the line NSS...

Ngày tải lên: 12/08/2014, 23:22

... not equal to set2 set1 contains 10 set2 does not contain 10 set1 after adding 4 and removing 10: { 3 1 5 4 } set1 intersect set2: { 3 5 } set1 union set : { 12 3 5 20 0 } The print method uses ... alloc] init]; NSMutableSet *set1 = [NSMutableSet setWithObjects: INTOBJ(1), INTOBJ(3), INTOBJ(5), INTOBJ( 10) , nil]; NSSet *set2 = [NSSet setWithObjects: INTOBJ(-5), INTOBJ( 100 ), INTOBJ(3)...

Ngày tải lên: 12/08/2014, 23:22

... variables point to the same lo- cation in memory. Making changes to the instance variables with a message such as [origin setX: 100 andY: 20 0] ; changes the x, y coordinate of the XYPoint object ... arrayWithObjects: [NSMutableString stringWithString: @”one”], [NSMutableString stringWithString: @”two”], [NSMutableString stringWithString: @”three”], nil ]; NSMutableArray *dataArray2; NSMu...

Ngày tải lên: 12/08/2014, 23:22

... Application Designing the Interface In Figure 21 .4, and in your Xcode main window, notice a file called MainWindow.xib.An xib file contains all the information about the user interface for your program, including information ... for your interface. This window is depicted in Figure 21 .6 in one of its display formats. The MainWindow.xib window (Figure 21 .7) is the controlling win...

Ngày tải lên: 12/08/2014, 23:22

... a is defined to contain n elements, the statement that begins if (index >= 0 && index < n && ([a objectAtIndex: index] == 0) ) references the element contained in the array ... 537 Expressions pa2 - pa1 produces the number of elements in a contained between the pointers pa2 and pa1 (assuming that pa2 points to an element further in a than pa1) and has integer...

Ngày tải lên: 12/08/2014, 23:22