Question

ok..so i’m reading from an sqlite db data into a string…it works..but when the data is null there is a problem

NSLog(@"%@",string);
if(string!=NULL && [string length]!=0){ do stuff }

note that the NSLog output is <null> not NULL or nil and i think here is the problem…i’m trying to check for NULL when the string is <null>

does that make sence?

in any case…is there any way to check if the string is <null>? or is there a better way to check for this problem?

Answer 1

<null> is what the description method on NSNull prints out. You should also check for string != [NSNull null].

(NSNull is a placeholder singleton for collections, where actual nil values aren’t allowed.)