try-catch
Call-stack for exceptions in C++
What you are doing is not good practice. Here’s why: 1. It’s unnecessary. If you compile your project in debug mode so that debugging information gets generated, you can easily get backtraces for exception handling in a debugger such as GDB. 2. It’s cumbersome. This is something you have to remember to add to each … Read more
What are the circumstances under which a finally {} block will NOT execute?
If you call System.exit() the program exits immediately without finally being called. A JVM Crash e.g. Segmentation Fault, will also prevent finally being called. i.e. the JVM stops immediately at this point and produces a crash report. An infinite loop would also prevent a finally being called. The finally block is always called when a … Read more
C++ get description of an exception caught in catch(…) block
There is one trick you might be able to use: catch(…) { handle_exception(); } void handle_exception() { try { throw; } catch (const std::exception &e) { std::cout << e.what() << “\n”; } catch (const int i) { std::cout << i << “\n”; } catch (const long l) { std::cout << l << “\n”; } catch … Read more
how to save exception in txt file?
Since you want to save the exception to C:\Error.txt, you don’t need Directory.Exists, Directory.CreateDirectory, or Server.MapPath(“~/Error.txt”). You can simply use StreamWriter like this: string filePath = @”C:\Error.txt”; Exception ex = … using( StreamWriter writer = new StreamWriter( filePath, true ) ) { writer.WriteLine( “—————————————————————————–” ); writer.WriteLine( “Date : ” + DateTime.Now.ToString() ); writer.WriteLine(); while( ex … Read more
javascript node.js getting line number in try catch?
Those [Getter/Setter] members indicate further information available on the error object. You can easily dump the contents of those getters/setters using a small helper function (very trivial implementation, further refinement is up to you) function dumpError(err) { if (typeof err === ‘object’) { if (err.message) { console.log(‘\nMessage: ‘ + err.message) } if (err.stack) { console.log(‘\nStacktrace:’) … Read more
How to throw an exception with a status code?
You can use err.code const error = new Error(“message”) error.code = “YOUR_STATUS_CODE” throw error;
Where do I put try/catch with “using” statement? [duplicate]
If your catch statement needs to access the variable declared in a using statement, then inside is your only option. If your catch statement needs the object referenced in the using before it is disposed, then inside is your only option. If your catch statement takes an action of unknown duration, like displaying a message … Read more
Can I use a try/catch in JavaScript without specifying the catch argument/identifier?
Optional catch binding in 2019 Node.js In Node.js, this feature is called Optional Catch Binding and is supported since Node.js version 10.3, see https://node.green. Typescript In Typescript, this is allowed since version 2.5. Browser support Chrome: since 68 Firefox: since 58 Edge, IE, Safari: no support for now Standard The proposal is currently Stage 4, … Read more