Question

Hi just starting to learn this language, more of a javascript/PHP guy…

I can’t seem to figure out the proper syntax and after searching the internets for a straight answer or explanation I decided to bother you SOF community:

This works as I want it to work:

    self.displaysTheStack.text = [self.displaysTheStack.text stringByAppendingString:@" "];
    self.displaysTheStack.text = [self.displaysTheStack.text stringByAppendingString:operation];
    self.displaysTheStack.text = [self.displaysTheStack.text stringByAppendingString:@" "];

I wanted to know if I could do the same thing in less lines something like:

NSString *displayTheArrayText = [NSString stringWithFormat:@" ",operation,@" "];

self.displaysTheStack.text = [self.displaysTheStack.text stringByAppendingString:displayTheArrayText];

When I do it this way I get the Two @” ” (spaces) but “operation” doesn’t show up: why and how do I write the latter command properly?

Answer 1

stringWithFormat: uses C-style formats similar to those used by printf

you probably want something like that:

NSString *displayTheArrayText = [NSString stringWithFormat:@" %@ ",operation];

have a look at Formatting String Objects