I am currently doing the following:
let line_parts = line.split_whitespace().take(3).collect::<Vec<&str>>();
let ip = line_parts[0];
let bytes = line_parts[1];
let int_number = line_parts[2];
Is it possible to do something like this?
let [ip, bytes, int_number] = line.split_whitespace().take(3).collect();
I'm noticed various references to vector destructuring on some sites but the official docs don't seem to mention it.
It seems what you need is "slice patterns":
fn main() {
let line = "127.0.0.1 1000 what!?";
let v = line.split_whitespace().take(3).collect::<Vec<&str>>();
if let [ip, port, msg] = &v[..] {
println!("{}:{} says '{}'", ip, port, msg);
}
}
Note the if let
instead of plain let
. Slice patterns are refutable, so we need to take this into account (you may want to have an else
branch, too).