Question

How would I detect if an array displays the following in an if statement? (I tried NULL and it didn’t work)…

When I NSLog the description of the array, this is what returns:

NSLog(@"%@", [manager purDesc]description]);

2011-08-30 13:43:20.227 PROJECT[2921:f503] manager purDesc Dump:(
        {
        amt = "\n      ";
        desc = "\n      ";
    }
)

I need to say “If [manager purDesc] looks like that, display a UIAlertView“.

Sorry everyone, I feel like I’m having trouble getting my point across this morning. If you don’t understand, please comment with your question and I’ll try to explain better.

Answer 1

Actually, your structure seems to be a dictionary inside an array. Not sure how that all stacks up. To see if all items in a dictionary are only whitespace.

BOOL empty = YES;
NSCharacterSet* wp = [NSCharacterSet whitespaceAndNewlineCharacterSet];
for(NSString* key in dict)
{
    NSString* val = [dict objectForKey: key];
    // trim white space and check length
    if([[val stringByTrimmingCharactersInSet: wp]length])
    {
        empty = NO;
        break;
    }
}

the array version is left as an exercise to the reader. 🙂