Question

Is it possible to initialize NSString object with null value?
Something like:

NSString *strNullTest = [[NSString alloc]initWithString:[NSNull null]];

When I am doing this it’s giving warning:

instance method -“null” not found return type default to id.

Does anyone knows the right way to initialize a string object with null?

Answer 1

there is no “null string” exist in objc. why you want a null string?

either you can use an empty string @"" or just use nil

if you want to put the string in a array or dictionary, [NSNull null] is good. all you need to do is to compare the value with [NSNull null] fist by object == [NSNull null]