Function not_null

src/fl/stl/not_null.h:173–177

Primary constructor - accepts non-null pointer Asserts non-null in debug builds, undefined behavior if null in release Note: Not explicit to allow implicit conversion from T (matching GSL behavior) Note: Not constexpr in C++11 due to FL_NOT_NULL_ASSERT limitation

    // Note: Not explicit to allow implicit conversion from T (matching GSL behavior)
    // Note: Not constexpr in C++11 due to FL_NOT_NULL_ASSERT limitation
    not_null(T ptr) FL_NOEXCEPT : mPtr(ptr) {
        if (mPtr == nullptr) {
            detail::not_null_assert_failed("not_null constructed with nullptr");
        }
    }

    // Copy constructor (defaulted)
    constexpr not_null(const not_null& other) FL_NOEXCEPT = default;