Question

I am new to Objective C. we can create String Object by one of these. can anybody tell difference & which is best,simplest way to doing this?

NSString *simpleString = @"This is a simple string";
NSString *anotherString = [NSString stringWithString:@"This is another simple string"];
NSString *oneMorestring = [[NSString alloc] initWithString:@"One more!"];
NSMutableString *mutableOne = [NSMutableString stringWithString:@"Mutable String"];
NSMutableString *anotherMutableOne =[[NSMutableString alloc] initWithString:@"A retained one"];
NSMutableString *thirdMutableOne =[NSMutableString stringWithString:simpleString];

Answer 1

The First method is the simplest and best method for creating string instance if the string is constant. The first method is also prefer as it follow Modern Objectice-C Language.

The Main deference between NSString and NSMutableString is that NSString object is constant. and we can’t change or update its value. But NSMutableString has property to change or updates its value.