mars-rover-fe

commit f09e4d4bee909ea28b0d1691703f5eee0ffb402f
parent c812b79363f9f85901d76f7d25ae201323baff7e
Author: Daniel Barlow <dan@telent.net>
Date:   Wed,  1 Nov 2023 00:23:58 +0000

use match instead of if/else

Rotation is an enum so leverage the compiler to tell us
we've considered all cases

Diffstat:
M
src/main.rs
 | 
19
+++++++++++--------

1 file changed, 11 insertions(+), 8 deletions(-)
diff --git a/src/main.rs b/src/main.rs
@@ -39,14 +39,17 @@ mod rover {
     }
 
     pub fn rotate((lon, lat, direction) : &Rover, rotation: Rotation) -> Rover {
-	if rotation == Rotation::Left {
-	    let new_d = next_direction(*direction);
-	    (*lon, *lat, new_d)
-	} else {
-	    let new_d = next_direction(*direction);
-	    let new_d = next_direction(new_d);
-	    let new_d = next_direction(new_d);
-	    (*lon, *lat, new_d)
+	match rotation {
+	    Rotation::Left => {
+		let new_d = next_direction(*direction);
+		(*lon, *lat, new_d)
+	    },
+	    Rotation::Right => {
+		let new_d = next_direction(*direction);
+		let new_d = next_direction(new_d);
+		let new_d = next_direction(new_d);
+		(*lon, *lat, new_d)
+	    }
 	}
     }
 }