8 Questions
What types of data structures can index expressions access elements of?
Arrays, pointers to arrays, slices, strings, and maps.
What must the index be in an index expression?
An untyped constant or an integer.
What happens when an out-of-range index is used in an index expression?
Run-time panic
What happens when an out of range index is used in an index expression?
It causes a run-time panic
What happens when a map index is not present in the map?
It returns the zero value for the element type
What is the requirement for map indexes in index expressions?
Must be assignable to the key type of the map
What happens when you assign to an element of a nil map?
It causes a run-time panic
What is the additional boolean value that an index expression on a map yields?
Whether the key is present in the map
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