exception-handling

问题 So, I am trying to return from a floating point exception, but my code keeps looping instead. I can actually exit the process, but what I want to do is return and redo the calculation that causes the floating point error. The reason the FPE occurs is because I have a random number generator that generates coefficients for a polynomial. Using some LAPACK functions, I solve for the roots and do some other things. Somewhere in this math intensive chain, a floating point exception occurs. When

问题 So, I am trying to return from a floating point exception, but my code keeps looping instead. I can actually exit the process, but what I want to do is return and redo the calculation that causes the floating point error. The reason the FPE occurs is because I have a random number generator that generates coefficients for a polynomial. Using some LAPACK functions, I solve for the roots and do some other things. Somewhere in this math intensive chain, a floating point exception occurs. When

问题 So, I am trying to return from a floating point exception, but my code keeps looping instead. I can actually exit the process, but what I want to do is return and redo the calculation that causes the floating point error. The reason the FPE occurs is because I have a random number generator that generates coefficients for a polynomial. Using some LAPACK functions, I solve for the roots and do some other things. Somewhere in this math intensive chain, a floating point exception occurs. When

问题 I'm trying to find a good article/examples of how DDD entities treat errors (and what would be considered exceptional errors and what wouldn't) and how they pass them up to the calling application layer (which usually wraps operations in a transaction that would need to be rolled back). Currently I'm thinking to consider all errors that would break the transaction of an aggregate (such as validation) to be exceptions. This way I can rollback the transaction in a "catch" block. For example:

问题 [EDIT - Disclaimer: This is a really bad idea, see the accepted answer for an actual solution.] I define my own exception handler using set_exception_handler() function. After the handler execution, I need the script to continue. Is there any way to do it? Disclaimer: I know try-catch blocks but I need to process Exceptions dynamicaly. Every calling of Clazz::foo() specifies its own exceptions which should be caught by my handler. That's the reason I can't use it. Example: class Clazz {

问题 Basically, why isn't this exception caught? var http = require('http'), options = { host: 'www.crash-boom-bang-please.com', port: 80, method: 'GET' }; try { var req = http.request(options, function(res) { res.setEncoding('utf8'); res.on('data', function (chunk) { console.log('BODY: ' + chunk); }); }); req.on('error', function(e) { throw new Error("Oh noes"); }); req.end(); } catch(_error) { console.log("Caught the error"); } Some people suggest that these errors need to be handled with event

问题 I've got some C# code that compiles fine under both mono and the Microsoft's .net compilers, but only runs on mono. The error message is (newlines added by me) Unhandled Exception: System.TypeLoadException: Could not load type 'Hasse.Groups.Heavy.Product.PowerGroup`1' from assembly 'Hasse, Version=1.0.x.y, Culture=neutral, PublicKeyToken=null' because it has recursive generic definition. The type actually has a recursive generic definition, so my question is: why does it work with mono? [The

问题 I've got some C# code that compiles fine under both mono and the Microsoft's .net compilers, but only runs on mono. The error message is (newlines added by me) Unhandled Exception: System.TypeLoadException: Could not load type 'Hasse.Groups.Heavy.Product.PowerGroup`1' from assembly 'Hasse, Version=1.0.x.y, Culture=neutral, PublicKeyToken=null' because it has recursive generic definition. The type actually has a recursive generic definition, so my question is: why does it work with mono? [The

问题 I have these two functions, with duplicated exception treatment, which has the sole purpose of displaying an error message: void func1() noexcept { try { do_task(); do_another_task(); } catch (const std::out_of_range& e) { show_msg("Out of range error", e.what()); } catch (const std::logic_error& e) { show_msg("Logic error", e.what()); } catch (const std::system_error& e) { show_msg("System error", e.what()); } catch (const std::runtime_error& e) { show_msg("Runtime error", e.what()); } catch

问题 I have these two functions, with duplicated exception treatment, which has the sole purpose of displaying an error message: void func1() noexcept { try { do_task(); do_another_task(); } catch (const std::out_of_range& e) { show_msg("Out of range error", e.what()); } catch (const std::logic_error& e) { show_msg("Logic error", e.what()); } catch (const std::system_error& e) { show_msg("System error", e.what()); } catch (const std::runtime_error& e) { show_msg("Runtime error", e.what()); } catch