202606021226 Fitness functions

A term from evolutionary computing, a fitness function is an objective function used to summarize how close a prospective design solution is to achieving the set goals.¹ It determines whether something is improving by being evaluated over time.

In 202109061338 Software Engineering we can use fitness functions to measure any quality of our program that we would like. A common example is a test coverage percentage fitness function. We can see over time if our test coverage is increasing, decreasing, or holding steady. Fitness functions 202109251100 Verify behaviors and assert properties.