diff --git a/exercises/12_options/options3.rs b/exercises/12_options/options3.rs index 5b70a792..4cedb512 100644 --- a/exercises/12_options/options3.rs +++ b/exercises/12_options/options3.rs @@ -1,14 +1,17 @@ +#[derive(Debug)] struct Point { x: i32, y: i32, } fn main() { - let y: Option = Some(Point { x: 100, y: 200 }); + let optional_point = Some(Point { x: 100, y: 200 }); - match y { - Some(p) => println!("Co-ordinates are {},{} ", p.x, p.y), - _ => panic!("no match!"), + // TODO: Fix the compiler error by adding something to this match statement. + match optional_point { + Some(p) => println!("Co-ordinates are {},{}", p.x, p.y), + _ => panic!("No match!"), } - y; // Fix without deleting this line. + + println!("{optional_point:?}"); // Don't change this line. } diff --git a/rustlings-macros/info.toml b/rustlings-macros/info.toml index 6027b6b1..5a47c85f 100644 --- a/rustlings-macros/info.toml +++ b/rustlings-macros/info.toml @@ -631,7 +631,8 @@ hint = """ The compiler says a partial move happened in the `match` statement. How can this be avoided? The compiler shows the correction needed. -After making the correction as suggested by the compiler, do read: +After making the correction as suggested by the compiler, read the related docs +page: https://doc.rust-lang.org/std/keyword.ref.html""" # ERROR HANDLING diff --git a/solutions/12_options/options3.rs b/solutions/12_options/options3.rs index 4e181989..0081eeb2 100644 --- a/solutions/12_options/options3.rs +++ b/solutions/12_options/options3.rs @@ -1 +1,26 @@ -// Solutions will be available before the stable release. Thank you for testing the beta version 🥰 +#[derive(Debug)] +struct Point { + x: i32, + y: i32, +} + +fn main() { + 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!("Co-ordinates are {},{}", p.x, p.y), + // ^^^ added + _ => panic!("No match!"), + } + + // Solution 2: Matching over a reference (`&Option`) by added `&` before + // `optional_point`. + match &optional_point { + Some(p) => println!("Co-ordinates are {},{}", p.x, p.y), + _ => panic!("No match!"), + } + + println!("{optional_point:?}"); +}