 the object can be null). To mark an object in our Zig code as “optional”, we use the <code>?</code> operator. When you put this <code>?</code> operator right before the data type of an object, you transform this data type into an optional data type, and the object becomes an optional object.</p>
<p>Take the snippet below as an example. We are creating a new variable object called <code>num</code>. This object have the data type <code>?i32</code>, which means that, this object contains either a signed 3