asdf.rs

//i have kv, an iterator over a str.split call, whose next value is the value i'm working on
//in this match arm, i want to take the value and make it an i64

try!(i64::from_str_radix(try!(kv.next().ok_or(error::Error::InvalidResponse)), 10).or(Err(error::Error::InvalidResponse)))

//oh wait, never mind, i need an Option<i64> anyway, and i'll try! it anyway further down, so this is much nicer
kv.next().and_then(|s| i64::from_str_radix(s, 10).ok())