In Kotlin, if and when statements are expressions that return a value. This allows for a more concise and functional
programming style with less cognitive complexity, because it results in fewer return points and fewer variable assignments in a function.
If both branches of an if statement end with a return statement, the if statement should be used instead as
an expression for a return statement.
If all branches of an exhaustive when statement end with a return statement, the when statement should be
used instead as an expression for a return statement. A when statement is exhaustive when it covers all elements of an enum
or features an else clause.
What is the potential impact?
Readability and Understanding
This change makes it easier to understand a function because it will reduce its complexity. This is because the function now contains fewer return
points that the developer needs to keep track of.