Evaluating to Values

I mentioned that an if is an expression. And if you remember from Anatomy of Rust:

An expression is evaluated to a value of a specific type

So far, every if expression we’ve had evaluates to unit. However, we can have it evaluate to something else, with the following restriction:

• There must be an else at the end

• Each block for each if, else, and else if in the expression must evaluate to the same type

For example, this code is good: