NSString&NSArray&NSDictionary定义及使用

NSString *greeting=[[NSString alloc] initWithFormat:@"test %@",nameString];
self.lable.text=greeting;
NSString *objs[3]={@"one",@"two",@"three"};
NSArray *dicObj=[NSArray arrayWithObjects:objs count:3];
NSArray *dicObj2=[[NSArray alloc] initWithObjects:@"one",@"two",@"three", nil];
NSMutableArray *dicObj3=[NSMutableArray arrayWithCapacity:17];
for(NSString *obj in dicObj2)
{
//if([obj isEqual:@"onew"])
{
NSLog(@"good!");
}
}
[dicObj3 enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
if([obj isEqual:@"test"])
{
NSLog(@"test here");
*stop=YES;
}
}];
NSArray *test=[NSArray arrayWithObjects:@"01",@"02", nil];
NSDictionary *dics=[NSDictionary dictionaryWithObject:test forKey:test];
NSArray *dkeys=[dics allKeys];
int count=[dkeys count];
for(int i=0;i<count;i++)
{
id key=[dkeys objectAtIndex:i];
id value=[dics objectForKey:key];
NSLog(@"key=%@ value=%@",key,value);
}