diff --git a/subject_source/src/errors/result.rs b/subject_source/src/errors/result.rs
new file mode 100644
index 0000000..d1d05b0
--- /dev/null
+++ b/subject_source/src/errors/result.rs
@@ -0,0 +1,19 @@
+pub fn is_err(res: &Result<i32, &str>) -> bool {
+    match res {
+        Err(_) => true,
+        Ok(_) => false,
+    }
+}
+
+pub fn is_ok(res: &Result<i32, &str>) -> bool {
+    !is_err(res)
+}
+
+pub fn get_err_or_panic(res: Result<i32, &str>) -> &str {
+    match res {
+        Err(e) => e,
+        Ok(_) => panic!("result was not an error"),
+    }
+}
+
+pub fn