I don’t think it would be readable. Too much going on. You’d need an outer iter over lines, an inner over words, a check for number and a conversion. And there would be zero error handling.
It is simpler to bang out a [int(num) for num in text.splitlines()[0].split(’ ')[1:]] in Python, but that just shows the happy path with no error handling, and does a bunch of allocations that the Rust version doesn’t. You can also get slightly fancier in the Rust version by collecting into a Result for more succinct error handling if you’d like.
EDIT: Here’s also a version using anyhow for error handling, and the aforementioned Result collecting:
Yeah I was trying to do something like reading the first line by getting an iterator and just looping through the other lines normally, since first line was kind of a special case but it got messy quick. I realized halfway that my collects were redundant but couldn’t really simplify it. Thanks
Rust borrows a lot of it’s design from functional programming languages like Haskell, which has its good and bad. You could also choose to implement this behavior iteratively like typical C programs, but that tends to be ugly in other ways.
Personally, I’ve grown fond of the functional style. You see it in other places too, like the higher order functions in JavaScript. What’s good about them in Rust is you still get amazing performance due to zero-cost abstraction. Trying to implement it yourself would likely be slower, so use them any chance you get.