Add bool conversion operator to Result class

GregoryKogan · Dec 26, 2023 · 26d8263 · 26d8263
1 parent 35fc3d7
commit 26d8263
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Showing 2 changed files with 5 additions and 0 deletions.
diff --git a/src/result.h b/src/result.h
@@ -41,6 +41,9 @@ template <typename T, typename E> class Result {
   [[nodiscard]] auto unwrap() const -> T;
   [[nodiscard]] auto unwrap_err() const -> E;
 
+  /// @brief `true` if the Result is successful, `false` otherwise.
+  constexpr explicit operator bool() const noexcept { return is_ok(); }
+
   /// @name Accesses the value of a successful Result.
   /// @return Pointer or reference to the value.
   ///@{

diff --git a/tests/is_ok.cpp b/tests/is_ok.cpp
@@ -6,11 +6,13 @@ TEST(IsOk, Ok) {
   const int value = 5;
   res::Result<int, std::string> result = res::Ok(value);
   EXPECT_TRUE(result.is_ok());
+  EXPECT_TRUE(result);
   EXPECT_FALSE(result.is_err());
 }
 
 TEST(IsOk, Err) {
   res::Result<int, std::string> result = res::Err(std::string("Something went wrong"));
   EXPECT_FALSE(result.is_ok());
+  EXPECT_FALSE(result);
   EXPECT_TRUE(result.is_err());
 }