Answer by nlta for Idiomatic way to only get insides of `Some` from a vector of options?

You can use filter_map it only returns the Somes not the Nones.

let optvec   = vec![Some(1), None, Some(4), None];let filtered: Vec<i32> = optvec.iter().filter_map(|f| *f).collect();println!("{:?}", filtered);>>> [1, 4]