Storing to a Nil Map
Explore how Go handles nil maps within composite data types. Understand why assigning or storing data on a nil map causes a program crash and learn the proper technique to initialize maps before use. This lesson helps you write safer Go code by checking for nil maps to prevent runtime panics, an essential skill for managing maps effectively.
We'll cover the following...
We'll cover the following...
Now, let’s discuss a special case where a map variable has the nil value. We are allowed to assign a map variable to nil. In that case, we will not be able to use that variable until we assign it to a new map variable. Put simply, if we try to store data on a nil map, our program will crash. ...