No one would implement this in a real productive project. This is for explanatory reasons only, and aimed at people already familiar with combinatorial logic.

>> I think programming in general, and FP in particular, will become a better place if we all grow up a bit and stop pretending we're too smart to need good naming.

I with you on this, but I think this is a bad example.

And while we are at it, documentation matters as well. The 'good code is the best documentation' attitude[ * ] might be valid if your methods consist of 3 lines and you use 6 methods in 5 modules. But anything bigger will become hard to maintain in the long run.

[ * ]: I encountered this especially in the haskell and erlang world.