ios - UItextfield initialized with empty string? not null? nor nil? -

i have uitextfield, when initialized , didn't input values it, found value of uitextfield not null nor nil.

 nsstring *notes = (notesfield.text)?(notesfield.text):@"hello";     nslog(@"notes: %@",notes); 

it returns nothing notes

    nsstring *notes1;  //or use legnth      if ([notesfield.text isequal:@""]) {      notes1=@"hello";         nslog(@"empty textfield: %@",notes1);         //then returns "hello"     }     else     {         notes1=notesfield.text;         nslog(@"not empty textfield: %@",notes1);     } 

why that? can still user ternary operator ? ?

nsstring *notes = ([notesfield.text length])?(notesfield.text):@"hello"; 

you can use

nsstring *notes = ([notesfield.text length])?(notesfield.text):@"hello"; 

or

nsstring *notes = ([notesfield.text length]==0)?@"hello":(notesfield.text); 

or

nsstring *notes = ([notesfield.text isequaltostring:@""])?@"hello":(notesfield.text); 

and case when uitextfield has no entry (initial case), use second or third option , beter. nsstring *notes = ([notesfield.text length])?@"hello":(notesfield.text); won't work fine expect because notesfield.text true if there no text in textfield. should use notesfield.text.length or [notesfield.text isequaltostring:@""].

hope clear now.