Question

Okay I am learning about arrays and how to work with them like I used to…… (Used to do alot of scripting but now am trying to learn to develop ipad and iphone app’s

But my issue is I have it where it pulls a bunch of data from yahoo finance with a for loop..

But now my issue is how can I work with just one peice of the array data that has been pulled

here is my example

-(IBAction) clicked:(id)sender {

   NSString * StockOneYahooFinance = [NSString stringWithFormat:@"http://finance.yahoo.com/q/hp?s=S+Historical+Prices"];
   NSString * PulledStockOne = [NSString stringWithContentsOfURL:[NSURL URLWithString:StockOneYahooFinance] encoding:1 error:nil];

   for (i=1;i<=10;i++){

      NSString *StartPulling = [[PulledStockOne componentsSeparatedByString:@"nowrap align="] objectAtIndex:i];

      NSString *StartOpen = [[StartPulling componentsSeparatedByString:@">"] objectAtIndex:3];
      NSString *Open = [[StartOpen componentsSeparatedByString:@"<"] objectAtIndex:0];

      NSString *StartClose = [[StartPulling componentsSeparatedByString:@">"] objectAtIndex:9];
      NSString *Close = [[StartClose componentsSeparatedByString:@"<"] objectAtIndex:0];

      NSMutableArray *StockOpens = [[NSMutableArray alloc] initWithCapacity:6];
      [StockOpens addObject:Open];


      sixtyday.text = [OpenValues objectAtIndex:10];
      nintyday.text = [CloseValues objectAtIndex:10];


      if ([OpenValues objectAtIndex:10]=[OpenValues objectAtIndex:11] {
         sevenday.text = @"Plus One";
      } 
   }
}

But now I want to do something like

year.text=StockOpens[5];

How can I do this.

Answer 1

Starting in Xcode 4.4 (LLVM 4.0), literals can be used for C-style subscripting in Objective-C.

year.text = StockOpens[5];

LLVM has documented the use of literal here: Objective-C Literals

Note: Because Clang will translate the literal usage, in this case to objectAtIndexedSubscript:, the OS X v10.8 (or iOS 6) Foundation framework is required.