simplify switch case in mapError in Result

jdisho · Jan 15, 2019 · b2f32af · b2f32af
1 parent ff3ec71
commit b2f32af
Showing 1 changed file with 2 additions and 6 deletions.
diff --git a/Source/Result.swift b/Source/Result.swift
@@ -213,12 +213,8 @@ extension Result {
     /// - Returns: A `Result` instance containing the result of the transform. If this instance is a success, returns
     ///            the same instance.
     public func mapError<T: Error>(_ transform: (Error) -> T) -> Result {
-        switch self {
-        case .failure(let error):
-            return .failure(transform(error))
-        case .success:
-            return self
-        }
+        guard case .failure(let error) = self else { return self }
+        return .failure(transform(error))
     }
 
     /// Evaluates the specified closure when the `Result` is a failure, passing the unwrapped error as a parameter.