From bf66df1a16461ef1ee50510803a3097914ffcb82 Mon Sep 17 00:00:00 2001
From: Hunter Kvalevog <hunter@kvog.sh>
Date: Mon, 14 Sep 2026 17:15:13 -0500
Subject: Add rustlings

---
 rustlings/exercises/13_error_handling/errors1.rs | 41 ++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 rustlings/exercises/13_error_handling/errors1.rs

(limited to 'rustlings/exercises/13_error_handling/errors1.rs')

diff --git a/rustlings/exercises/13_error_handling/errors1.rs b/rustlings/exercises/13_error_handling/errors1.rs
new file mode 100644
index 0000000..e07fddc
--- /dev/null
+++ b/rustlings/exercises/13_error_handling/errors1.rs
@@ -0,0 +1,41 @@
+// TODO: This function refuses to generate text to be printed on a nametag if
+// you pass it an empty string. It'd be nicer if it explained what the problem
+// was instead of just returning `None`. Thankfully, Rust has a similar
+// construct to `Option` that can be used to express error conditions. Change
+// the function signature and body to return `Result<String, String>` instead
+// of `Option<String>`.
+fn generate_nametag_text(name: String) -> Option<String> {
+    if name.is_empty() {
+        // Empty names aren't allowed
+        None
+    } else {
+        Some(format!("Hi! My name is {name}"))
+    }
+}
+
+fn main() {
+    // You can optionally experiment here.
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn generates_nametag_text_for_a_nonempty_name() {
+        assert_eq!(
+            generate_nametag_text("Beyoncé".to_string()).as_deref(),
+            Ok("Hi! My name is Beyoncé"),
+        );
+    }
+
+    #[test]
+    fn explains_why_generating_nametag_text_fails() {
+        assert_eq!(
+            generate_nametag_text(String::new())
+                .as_ref()
+                .map_err(|e| e.as_str()),
+            Err("Empty names aren't allowed"),
+        );
+    }
+}
-- 
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