IOS, IOS Questions, Objective-c, Programming

How to catch a Nan?

Nan represents Not a number

When it happens to get a Nan as a result of an expression you have to find a way to catch it before.

Let’s think an if statement and inside this the appropriate check.

A working code is the following:

if ([[NSDecimalNumber decimalNumberWithString:self.price…] isEqual:[NSDecimalNumber notANumber]]) {