越努力.越幸福.－－－－willingseal.
LLVM4
@
不使用字面量
NSString *string1 = [[NSStringalloc]initWithCString:"willingseal"encoding:NSUTF8StringEncoding];
NSLog(@"-string1-%@",string1);
使用字面量
NSString *string2 =@"willingseal";
NSLog(@"-string2-%@",string2);
打印：
2013-05-22 16:05:08.973 Keybord[2396:c07] -string1-willingseal
2013-05-22 16:05:08.974 Keybord[2396:c07] -string2-willingseal
NSNumber *number1 = [NSNumbernumberWithFloat:4];
NSLog(@"number1－%@",number1);
NSNumber *number2 =@4.933F;
NSLog(@"number2-%@",number2);
打印：
2013-05-22 16:09:04.354 Keybord[2454:c07] number1－4
2013-05-22 16:09:04.354 Keybord[2454:c07] number2-4.933
NSString *str1 =@"ddv";
NSString *str2 =@"ddr";
NSString *str3 =@"dde";
NSArray *array=@[str1,str2,str3];
NSLog(@"array-%@",array);
／／使用数组下标查找
NSString *a = array[2];
NSLog(@"a-%@",a);
打印：
2013-05-22 16:09:04.354 Keybord[2454:c07] array-(
ddv,
ddr,
dde
)
2013-05-22 16:09:04.354 Keybord[2454:c07] a-dde
错误：：：：
这里有一点问题。。。。可是我还不知到怎么回事，该怎么弄。。。。
这个？？？？？？？？
NSDictionary *dics =@[@"key1",@"v1",@"key2",@"v2",@"key3",@"v3"];
NSLog(@"dics--%@",dics);
打印：
2013-05-22 16:09:04.355 Keybord[2454:c07] dics--(
key1,
v1,
key2,
v2,
key3,
v3
)
这个打印出来的是一个数组，，，把一个数组赋给了字典，会出现警告
字典的：
NSDictionary *options =
@{
@"backup": @YES,
@"daysToKeepBackup":
@903,
@"flags": @"foo"
};
NSLog(@"options-%@",options);
打印：
2013-05-24 14:01:21.517 Keybord[624:c07] options-{
backup = 1;
daysToKeepBackup = 903;
flags = foo;
}