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#![allow(non_camel_case_types)]
trait Parser<T> {
fn parse(text: &str) -> Option<T>;
}
impl<bool> Parser<bool> for bool {
fn parse(text: &str) -> Option<bool> {
Some(true) //~ ERROR mismatched types
}
}
fn main() {
println!("{}", bool::parse("ok").unwrap_or(false));
}
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