diff options
Diffstat (limited to 'rustlings/solutions/12_options/options3.rs')
| -rw-r--r-- | rustlings/solutions/12_options/options3.rs | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/rustlings/solutions/12_options/options3.rs b/rustlings/solutions/12_options/options3.rs index dcf2377..c918f71 100644 --- a/rustlings/solutions/12_options/options3.rs +++ b/rustlings/solutions/12_options/options3.rs @@ -1,4 +1,27 @@ +#[derive(Debug)] +struct Point { + x: i32, + y: i32, +} + fn main() { - // DON'T EDIT THIS SOLUTION FILE! - // It will be automatically filled after you finish the exercise. + let optional_point = Some(Point { x: 100, y: 200 }); + + // Solution 1: Matching over the `Option` (not `&Option`) but without moving + // out of the `Some` variant. + match optional_point { + Some(ref p) => println!("Coordinates are {},{}", p.x, p.y), + // ^^^ added + _ => panic!("No match!"), + } + + // Solution 2: Matching over a reference (`&Option`) by added `&` before + // `optional_point`. + match &optional_point { + //^ added + Some(p) => println!("Coordinates are {},{}", p.x, p.y), + _ => panic!("No match!"), + } + + println!("{optional_point:?}"); } |