> Do folks really prefer the latter example? The first one is so clear to me and the second looks inscrutable.
Literally everything in programming is inscrutable until you learn it the first time. The latter should be trivial to understand for anyone who's spent even a little amount of time in a language with functional elements.
A day-one beginner doesn't understand a `for` loop. You probably think they're trivial. Bitwise operations are the same. They might be new to you, but `zip` and `map` frankly don't take much more effort to understand than anything else you probably take for granted. `zip` walks through everything in two separate wrappers and pairs up each element inside. `map` opens up a wrapper, lets you do something with what's inside, and re-wraps the result.
For instance, you can do the exact same thing with arrays. Pair up each element inside (like a zipper on clothing), then for every element inside, add them together:
[1, 3].zip([4, 1]).map(|(a, b)| a + b ) # [5, 4]
That said, you can write this specific function even simpler:
Literally everything in programming is inscrutable until you learn it the first time. The latter should be trivial to understand for anyone who's spent even a little amount of time in a language with functional elements.
A day-one beginner doesn't understand a `for` loop. You probably think they're trivial. Bitwise operations are the same. They might be new to you, but `zip` and `map` frankly don't take much more effort to understand than anything else you probably take for granted. `zip` walks through everything in two separate wrappers and pairs up each element inside. `map` opens up a wrapper, lets you do something with what's inside, and re-wraps the result.
For instance, you can do the exact same thing with arrays. Pair up each element inside (like a zipper on clothing), then for every element inside, add them together:
That said, you can write this specific function even simpler: