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+// Copyright 2025, Amlal El Mahrouss (amlal@nekernel.org)
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+// Official repository: https://github.com/ocl-org/core
+
+#include <ocl/crc_hash.hpp>
+#include <ocl/print.hpp>
+#include <ocl/option.hpp>
+
+struct invalid_callable {
+ explicit invalid_callable() = default;
+ void operator()(const char* reason)
+ {
+ ocl::detail::throw_runtime_error();
+ }
+};
+
+/// \brief Option Monad example
+int main(int argc, char** argv)
+{
+ ocl::option opt{ocl::eval_eq(nullptr, nullptr)};
+ opt.expect("option::incorrect");
+
+ ocl::option opt2{ocl::eval_eq(argv, nullptr)};
+ opt2.expect<invalid_callable>("option::incorrect");
+
+ return 0;
+}