37 lines
955 B
Rust
37 lines
955 B
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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trait IDummy {
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fn do_nothing(&self);
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}
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#[derive(Debug)]
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struct A { a: isize }
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#[derive(Debug)]
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struct B<'a> { b: isize, pa: &'a A }
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impl IDummy for A {
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fn do_nothing(&self) {
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println!("A::do_nothing() is called");
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}
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}
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impl<'a> B<'a> {
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fn get_pa(&self) -> &'a IDummy { self.pa as &'a IDummy }
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}
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pub fn main() {
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let sa = A { a: 100 };
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let sb = B { b: 200, pa: &sa };
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println!("sa is {:?}", sa);
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println!("sb is {:?}", sb);
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}
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