[chrisco255]

You're mutating result every step along the way and passing it into the functions as well, such that if it's an object or an array it could be mutated in non-transparent ways. The main benefit is to encourage a more functional, immutable data flow.

[thomas_moon]

I get your point but I guess I fail to see how more obscure syntax at the time of composition helps someone understand something should be immutable. If I'm mutating inputs in a functional programming code base, syntax probably isn't the problem.

edit: wasn't to isn't