To ensure a composite function exists, it is crucial to check that the range of the inner function lies within the domain of the outer function. Since \(f \circ g\) and \(g \circ f\) are different ...

In the example it is an anonymous inner function created with fn, but the Clojure compiler behaves similarly regardless of whether you use other mechanisms for creating functions ... a JVM object ...

Great job, you've just nested a function within another function. One other pretty cool reason for nesting functions # is the idea ... in the enclosing scope is available to the inner function even ...