objective c - How can I use a nullable int or a NSInteger pointer? -


I have not been set already, so it needs a value to calculate in the getter method I I like to use the nullable int build, so I do not need another bool to check that it has already been done.

My first bud was to go for a NSInteger * I can check whether it is a tap and otherwise there is a value set for it but I do not know if it is possible That's because I can not really get the value assigned to it.

  if (! Value) {value = [self calcValue]; }     return value;   

It leads to

P> I How do I specify a int as a nsinteng * ?
How do I put a NSInteger * to a ?

A NSInteger is actually a int . You are searching for NSNumber , which lets you treat numbers as objects.


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