#includeboost::system::error_code ec; // some code that may encounter error if (error_condition) { ec = boost::system::error_code(error_code_type, boost::system::generic_category()); }
#includeIn this example, the std::error_code type is used to handle errors encountered by the std::filesystem::exists() function. The ErrorResult ErrorCode is initialized by the function and stored in the ec variable. The exists variable holds a Boolean value indicating whether the file exists or not. In conclusion, ErrorResult ErrorCode is a widely used type for handling errors and exceptions in C++. Its usage can be found in many libraries and packages such as boost, std::filesystem, etc.std::error_code ec; auto exists = std::filesystem::exists("path/to/file", ec); if (exists) { // do something with file } else { // handle error }