rust/tests/ui/autoref-autoderef/autoderef-method-priority.rs

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// run-pass
#![allow(non_camel_case_types)]
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trait double {
fn double(self) -> usize;
}
impl double for usize {
fn double(self) -> usize { self }
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}
impl double for Box<usize> {
fn double(self) -> usize { *self * 2 }
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}
pub fn main() {
let x: Box<_> = Box::new(3);
assert_eq!(x.double(), 6);
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}