3 #![allow(non_camel_case_types)]
4 #![allow(non_upper_case_globals)]
6 static tau
: f64 = 2.0*3.14159265358979323;
8 struct Point {x: f64, y: f64}
9 struct Size {w: f64, h: f64}
12 rectangle(Point
, Size
)
16 fn compute_area(shape
: &shape
) -> f64 {
18 shape
::circle(_
, radius
) => 0.5 * tau
* radius
* radius
,
19 shape
::rectangle(_
, ref size
) => size
.w
* size
.h
24 // self is in the implicit self region
25 pub fn select
<'r
, T
>(&self, threshold
: f64, a
: &'r T
, b
: &'r T
)
27 if compute_area(self) > threshold {a}
else {b}
31 fn select_based_on_unit_circle
<'r
, T
>(
32 threshold
: f64, a
: &'r T
, b
: &'r T
) -> &'r T
{
34 let shape
= &shape
::circle(Point{x: 0.0, y: 0.0}
, 1.0);
35 shape
.select(threshold
, a
, b
)
48 fn thing(x
: A
) -> thing
{
55 pub fn bar(self: Box
<thing
>) -> isize { self.x.a }
56 pub fn quux(&self) -> isize { self.x.a }
57 pub fn baz
<'a
>(&'a
self) -> &'a A { &self.x }
58 pub fn spam(self) -> isize { self.x.a }
61 trait Nus { fn f(&self); }
62 impl Nus
for thing { fn f(&self) {}
}
65 let y
: Box
<_
> = Box
::new(thing(A {a: 10}
));
66 assert_eq
!(y
.clone().bar(), 10);
67 assert_eq
!(y
.quux(), 10);
69 let z
= thing(A {a: 11}
);
70 assert_eq
!(z
.spam(), 11);