Error AsCString is a function provided by various C++ packages/libraries that returns the error message associated with a particular exception object as a C-style string.
Here are a few code examples:
// Example using the std::runtime_error exception class #include #include
try { // code that might throw a std::runtime_error exception } catch (const std::runtime_error& e) { const char* errorMsg = e.what(); // get the error message as a C-style string std::cout << "Caught exception: " << errorMsg << std::endl; }
// Example using the boost::exception library #include #include
try { // code that might throw a boost::exception } catch (const boost::exception& e) { const char* errorMsg = boost::diagnostic_information(e).c_str(); // get the error message as a C-style string std::cout << "Caught exception: " << errorMsg << std::endl; }
In the first example, we catch a std::runtime_error exception and retrieve its error message using the .what() member function, which returns a const char* pointing to a null-terminated string.
In the second example, we use the boost::exception library to throw and catch exceptions that contain additional diagnostic information (such as a stack trace). We use the boost::diagnostic_information() function to extract the error message as a std::string, convert it to a C-style string using .c_str(), and print it out.
Based on these examples, we can see that Error AsCString is likely part of a larger package or library that provides exception handling functionality in C++. Possible libraries could include the C++ Standard Library (for std::runtime_error), boost::exception, or other third-party libraries.
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