Feat: Use unwrapping for error handling.

src/main.rs

@@ -10,17 +10,20 @@ struct Cli {
 fn main() {
     let args = Cli::parse();
 
-    let content = std::fs::read_to_string(&args.path).expect("Could not read file.");
+    // let content = std::fs::read_to_string(&args.path).expect("Could not read file.");
 
-    let result = std::fs::read_to_string("test.txt");
-    match result {
+    let result = std::fs::read_to_string(&args.path);
+    let content = match result {
         Ok(content) => {
-            println!("File content: {}", content);
-        }
+            content
+        },
         Err(error) => {
-            println!("Oh no error: {}", error);
-        }
+            panic!("Oh no error: {}", error);
         }
+    };
+
+    // can do the same with following
+    // let content = std::fs::read_to_string(&args.path).unwrap();
 
     for line in content.lines() {
         if line.contains(&args.pattern) {