Knowledge check

Answer the following questions to demonstrate what you've learned:

When are Rust traits useful?

When a function or struct needs to accept optional parameters.

When we need to specify function or struct parameters in terms of behavior rather than concrete value.

When we need to avoid the compile-time guarantees of the Borrow Checker.

When we need our values to continue to be valid beyond their lifetime scope.

What does the following function signature mean? fn show_on_screen<T: Display>(data: T)

The data parameter can be of any type.

The data parameter can be of any type that optionally implements the Display trait.

The data parameter is restricted only to types that implement the Display trait.

The data parameter is optional.

You must answer all questions before checking your work.

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