The difference between a functional programmer and an imperative programmer is an imperative programmer looks at that and says “yeah, great takedown of FP”, while a functional programmer says, “what’s with the unbounded recursion?”
But, more seriously, it's long been established that real programming benefits from use of both imperative and declarative (the latter including—but not limited to—functional) idioms, which is why mainstream imperative OO languages have for more than decade importing functional features at a mad clip, and why functional languages have historically either been impure (e.g., Lisp and ML and many of their descendants) or included embedded syntax sugar that supports expressing imperative sequences using more conventionally imperative idioms (e.g., Haskell do-notation.)
The difference is that embedding functional idioms in imperative languages often requires warnings about what you can and cannot do safely to data without causing chaos, while imperative embeddings in functional code have no such problems.
> * A cake is a hot cake that [...]
The difference between a functional programmer and an imperative programmer is an imperative programmer looks at that and says “yeah, great takedown of FP”, while a functional programmer says, “what’s with the unbounded recursion?”
But, more seriously, it's long been established that real programming benefits from use of both imperative and declarative (the latter including—but not limited to—functional) idioms, which is why mainstream imperative OO languages have for more than decade importing functional features at a mad clip, and why functional languages have historically either been impure (e.g., Lisp and ML and many of their descendants) or included embedded syntax sugar that supports expressing imperative sequences using more conventionally imperative idioms (e.g., Haskell do-notation.)
The difference is that embedding functional idioms in imperative languages often requires warnings about what you can and cannot do safely to data without causing chaos, while imperative embeddings in functional code have no such problems.