From 6e1589ff7df198752f1aa37b94efc64be80fcc61 Mon Sep 17 00:00:00 2001
From: mhart <martin-hart@protonmail.com>
Date: Sun, 11 Oct 2020 20:10:17 +0200
Subject: [PATCH] Change Option<> in parse_orientation() parse_instruction()
 for Result<Instruction, &'static str>

---
 src/main.rs | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 313f30a..c10155e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -11,22 +11,22 @@ enum Instruction {
     F,
 }
 
-fn parse_orientation(c: char) -> Option<Orientation> {
+fn parse_orientation(c: char) -> Result<Orientation, &'static str> {
     match c {
-        'N' => Some(Orientation::N),
-        'E' => Some(Orientation::E),
-        'S' => Some(Orientation::S),
-        'W' => Some(Orientation::W),
-        _ => None,
+        'N' => Ok(Orientation::N),
+        'E' => Ok(Orientation::E),
+        'S' => Ok(Orientation::S),
+        'W' => Ok(Orientation::W),
+        _ => Err("Invalid character, does not match any orientations"),
     }
 }
 
-fn parse_instruction(c: char) -> Option<Instruction> {
+fn parse_instruction(c: char) -> Result<Instruction, &'static str> {
     match c {
-        'L' => Some(Instruction::L),
-        'R' => Some(Instruction::R),
-        'F' => Some(Instruction::F),
-        _ => None,
+        'L' => Ok(Instruction::L),
+        'R' => Ok(Instruction::R),
+        'F' => Ok(Instruction::F),
+        _ => Err("Invalid character, does not match any instructions"),
     }
 }