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Created August 17, 2016 00:35
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Rust code shared from the playground
use std::io::{self};
use std::result;
type KKResults <T> = Result <T, KKError>;
#[derive(Debug)]
enum KKError {
Io(io::Error),
}
impl From<io::Error> for KKError {
fn from(err: io::Error) -> KKError {
KKError::Io(err)
}
}
trait knightknave {
fn is_knight_or_knave (&self) -> KKResults <T>;
}
struct Knight;
struct Knave;
struct visitor;
impl knightknave for visitor {
fn is_knight_or_knave(&self) ->KKResults <T> {
Ok(())
}
}
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