- (void)viewDidLoad {
[super viewDidLoad];
CGRect frame= CGRectMake(520, 280, 320, 480);
CGImageRef small;
small= CGImageCreateWithImageInRect([[UIImage imageNamed:@"3.png"] CGImage],frame);
UIImageView *test=[[UIImageView alloc] initWithImage:[UIImage imageWithCGImage:small]];
[self.view addSubview:test];
[test release];
}
Command Guru will hold a 7 days, full immersion iPhone development session near Venice, Italy.
The development team leader will be Mr. Aaron Hillegass.
Dates: from december 6 to 12.
Location: by our big friends @ Big Rock (an H-Farm company)
Developers required skills:
Skills that make you shine:
UI designers are needed too.
For this first project we'll select 10 people only.
[UPDATE: only 3 seats left]
International Developers Welcome!
Free RedBull, Red wine (Italian...) and PIZZA.
Two way Airplane tickets + room included!
It will be a 7-day full-immersion development madness!
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- (NSArray *)sortedArrayUsingSelector:(SEL)comparator A selector that identifies the method to use to compare two elements at a time. The method should returnParameters
NSOrderedAscending if the receiver is smaller than the argument, NSOrderedDescending if the receiver is larger than the argument, and NSOrderedSame if they are equalNSArray *sortedArray =
[anArray sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)];
@property (nonatomic, readwrite, retain) NSMutableArray *parameters;
[self.parameters sortUsingSelector:@selector(compare:)];
#pragma mark - - (NSComparisonResult)compare:(id)inObject { NSComparisonResult result = [self.name compare:[(MPURLRequestParameter *)inObject name]]; if (result == NSOrderedSame) { result = [self.value compare:[(MPURLRequestParameter *)inObject value]]; } return result; } ////////////////////////////////////////////////////////// sortedArrayUsingFunction:适合基本类型（支持compare方法） #pragma mark SORT METHOTDS NSInteger sortObjectsByLatestTime(id obj1, id obj2, void *context) { NSDate* d1 = [(MessageGroup*)obj1 latestTime]; NSDate* d2 = [(MessageGroup*)obj2 latestTime]; //sort by desc return [d2 compare:d1]; } NSInteger dateSort(id obj1, id obj2, void *context) { NSDate* d1 = ((Inbox*)obj1).datetime; NSDate* d2 = ((Inbox*)obj2).datetime; return [d1 compare:d2]; } //////////////////////////////////////////////////////////////////// -(NSArray*)sortedMessages { return [[groupMessages allValues] sortedArrayUsingFunction:sortObjectsByLatestTime context:NULL]; } ////////////////////////////////////////////////////////// sortUsingDescriptors:适合元素是dict类型，initWithKey既是dict key. NSMutableArray *regions = [NSMutableArray array];
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"name" ascending:YES];
NSArray *sortDescriptors = [NSArray arrayWithObject:sortDescriptor];
[regions sortUsingDescriptors:sortDescriptors];
[sortDescriptor release];
NSMutableData *data1, *data2;
NSString *myString = @"string for data1";
NSString *yourString = @"string for data2";
const char *utfMyString = [myString UTF8String];
const char *utfYourString = [yourString UTF8String];
unsigned char *firstBuffer, secondBuffer[20];
/* initialize data1, data2, and secondBuffer... */
data1 = [NSMutableData dataWithBytes:utfMyString length:strlen(utfMyString)+1];
data2 = [NSMutableData dataWithBytes:utfYourString length:strlen(utfYourString)+1];
[data2 getBytes:secondBuffer];
NSLog(@"data2 before: \"%s\"\n", (char *)secondBuffer);
firstBuffer = [data2 mutableBytes];
[data1 getBytes:firstBuffer];
NSLog(@"data1: \"%s\"\n", (char *)firstBuffer);
[data2 getBytes:secondBuffer];
NSLog(@"data2 after: \"%s\"\n", (char *)secondBuffer);
|
Q: Given that |
+ (void)getStreamsToHostNamed:(NSString *)hostName
port:(NSInteger)port
inputStream:(NSInputStream **)inputStreamPtr
outputStream:(NSOutputStream **)outputStreamPtr
{
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
assert(hostName != nil);
assert( (port > 0) && (port < 65536) );
assert( (inputStreamPtr != NULL) || (outputStreamPtr != NULL) );
readStream = NULL;
writeStream = NULL;
CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef) hostName, port,((inputStreamPtr != nil) ? &readStream : NULL),((outputStreamPtr != nil) ? &writeStream : NULL));
if (inputStreamPtr != NULL) {
*inputStreamPtr = [NSMakeCollectable(readStream) autorelease];
}
if (outputStreamPtr != NULL) {
*outputStreamPtr = [NSMakeCollectable(writeStream) autorelease];
}
}
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标准文档 官方手册
GDB需要编译时使用-g 参数
1 (gdb)break main 设置断点
break file.m: 36 在file.m处设置断点
(gdb)info breakpoints 查看断点信息
(gdb) info break
Num Type Disp Enb Address What
1 breakpoint keep y 0x0000660c in -[CocoaXMLParser downloadAndParse:] at /Developer/Platforms/iPhoneOS.platform/Developer/Documentation/DocSets/com.apple.adc.documentation.AppleiPhone3_0.iPhoneLibrary.docset/Contents/Resources/Documents/samplecode/XMLPerformance/XMLPerformance/Classes/CocoaXMLParser.m:72
breakpoint already hit 1 time
(gdb) disable 1 禁止断点1
2 (gdb)run 运行程序
3 (gdb)next 执行下一行代码
4 (gbb)shell cc -g -o memerror merror.m
不退出gdb编译程序
(gdb)run blargle 带参数运行程序
5 (gdb) call (int) strlen(argv[1]) 调用func
6 (gdb) set var stringbuffer = (void *) maclloc ((int)strlen(argv[1]+1)
修改代码，而无须重新编译和重新运行，patch error 当前session立即生效
7 (gdb) list 列出当前代码片段
