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// edition:2021
//check-pass
#![warn(unused)]
#![allow(dead_code)]
#![feature(rustc_attrs)]
#[derive(Debug, Clone, Copy)]
enum PointType {
TwoD { x: u32, y: u32 },
ThreeD{ x: u32, y: u32, z: u32 }
}
// Testing struct patterns
struct Points {
points: Vec<PointType>,
}
impl Points {
pub fn test1(&mut self) -> Vec<usize> {
(0..self.points.len())
.filter_map(|i| {
let idx = i as usize;
match self.test2(idx) {
PointType::TwoD { .. } => Some(i),
PointType::ThreeD { .. } => None,
}
})
.collect()
}
pub fn test2(&mut self, i: usize) -> PointType {
self.points[i]
}
}
fn main() {
let mut points = Points {
points: Vec::<PointType>::new()
};
points.points.push(PointType::ThreeD { x:0, y:0, z:0 });
points.points.push(PointType::TwoD{ x:0, y:0 });
points.points.push(PointType::ThreeD{ x:0, y:0, z:0 });
points.points.push(PointType::TwoD{ x:0, y:0 });
println!("{:?}", points.test1());
println!("{:?}", points.points);
}
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