Suchi Suchi - 1 month ago 5x
Objective-C Question

Check if an NSString is just made out of spaces

I want to check if a particular string is just made up of spaces. It could be any number of spaces, including zero. What is the best way to determine that?

NSString *str = @"         ";
NSCharacterSet *set = [NSCharacterSet whitespaceCharacterSet];
if ([[str stringByTrimmingCharactersInSet: set] length] == 0)
    // String contains only whitespace.