How can I handle errors in C++ using Boost Library?

What are some effective ways to handle errors in C++ using the Boost Library?

You can use Boost's Exception Handling features, like boost::exception and boost::throw_exception, to manage errors.

Can you give me an example of using boost::exception?

Sure! Here's a simple example:

#include <boost/exception/all.hpp>
#include <iostream>

struct my_exception : virtual std::exception, virtual boost::exception {};

void risky_function() {
    throw my_exception();
}

int main() {
    try {
        risky_function();
    } catch (const my_exception& e) {
        std::cerr << "Caught a Boost exception!" << std::endl;
    }
}

This code demonstrates how to throw and catch a Boost exception.

What if I want to add more context to the exception?

You can use boost::throw_exception to add context. For example:

void risky_function() {
    BOOST_THROW_EXCEPTION(my_exception() << boost::errinfo_file_name(__FILE__) << boost::errinfo_line(__LINE__));
}

This will include the file name and line number in the exception.

Are there any best practices for using Boost for error handling?

Yes, always ensure to catch exceptions by reference, use specific exception types, and provide meaningful error messages.