operator=() method from fcf::NTest::SharedPtrAny class

fcf::NTest::SharedPtrAny& operator=(const fcf::NTest::SharedPtrAny& a_source)

fcf::NTest::SharedPtrAny& operator=(fcf::NTest::SharedPtrAny&& a_source)

File: test.hpp ( link_to_the_declaration_in_the_file , link_to_the_implementation_in_the_file )

Available from version: 1.1.1

Assigns one SharedPtrAny instance to another, supporting both copy and move semantics.

The operator= allows for transferring ownership or sharing access to the managed object between fcf::NTest::SharedPtrAny instances.

The implementation handles both:

Copy Assignment: Increases the reference count of the source object.
Move Assignment: Transfers ownership from the source to the target, leaving the source in a null state, without affecting the reference count.

Result

fcf::NTest::SharedPtrAny&

- A reference to the current instance (*this) to allow for assignment chaining.

Example: Copy and Move Assignment Semantics

Demonstrates how to use copy assignment to share ownership and move assignment to transfer ownership between instances.

#define FCF_TEST_IMPLEMENTATION #include <fcfTest/test.hpp> FCF_TEST_DEFINE("SharedPtrAny", "Demo", "AssignmentTest"){ struct Data { std::string val; Data(std::string v) : val(v) {} }; // 1. Initialize two pointers fcf::NTest::SharedPtrAny ptr1 = fcf::NTest::SharedPtrAny::make<Data>("Original"); fcf::NTest::SharedPtrAny ptr2; // 2. Copy Assignment // ptr2 now shares ownership with ptr1. Reference count should be 2. ptr2 = ptr1; FCF_TEST(ptr2.count() == 2, "Reference count should be 2 after copy"); // 3. Move Assignment // We create a temporary pointer and move it to ptr1. // ptr1 will now own the data, and the temporary will be null. FCF_TEST(ptr1.count() == 2, "Count before move"); fcf::NTest::SharedPtrAny temp = fcf::NTest::SharedPtrAny::make<Data>("Temp"); ptr1 = std::move(temp); // After move: ptr1 owns "Temp", temp is null, ptr2 still owns "Original" FCF_TEST(ptr1.count() == 1, "ptr1 count should be 1 after move"); FCF_TEST(!temp, "temp should be null after move"); FCF_TEST(ptr2.count() == 1, "ptr2 count should be 1"); // 4. Verify data integrity Data* data = ptr1.cast<Data>(); FCF_TEST(data != nullptr && data->val == "Temp", "Data integrity check failed"); } int main(int a_argc, char* a_argv[]) { bool error = false; fcf::NTest::cmdRun(a_argc, a_argv, fcf::NTest::CRM_RUN, &error); return error ? 1 : 0; }

Output:

Performing the test: "SharedPtrAny" -> "Demo" -> "AssignmentTest" ... [SUCCESS] Test completed successfully (0.000`003`955 sec) [SUCCESS] All tests were completed. Tests: 1 passed, 0 failed, 0 skipped, 1 total Duration: 0.000`003`955 sec