On stable and beta, this code:
fn main() {
let x: Result<u32, _> = "+1".parse();
println!("{:?}", x);
}
prints Err(ParseIntError { kind: InvalidDigit })
; on nightly it prints Ok(1)
. Is this intentional? Announced?
On stable and beta, this code:
fn main() {
let x: Result<u32, _> = "+1".parse();
println!("{:?}", x);
}
prints Err(ParseIntError { kind: InvalidDigit })
; on nightly it prints Ok(1)
. Is this intentional? Announced?
It happened (intentionally) in #28826. There's even a comment:
I'm adding to relnotes, and we should advertise this change widely when it lands since it's a visible behavioral change.
but the delay between the comment and the actual landing probably meant it slipped off the radar... until now. (Thanks for the reminder!)