Here is a code snippet, which works for me (I did not reach the error condition). while (true) { T ret = null; try { if (!enumerator.MoveNext()) { break; } ret = enumerator.Current; } catch (Exception ex) { // handle the exception and end the iteration // probably you want it to re-throw it break; … Read more
This appears to be a bug in GCC’s implementation of copy elision. The C++ standard says the following: [class.copy.elision] (emphasis mine) This elision of copy/move operations, called copy elision, is permitted in the following circumstances (which may be combined to eliminate multiple copies): in a throw-expression, when the operand is the name of a non-volatile … Read more
I’m afraid there’s a big problem with the first example, which is that if an exception happens on or after the read, the finally block executes. So far so good. But what if the fr.close() then causes another exception to be thrown? This will “trump” the first exception (a bit like putting return in a … Read more
Check out this Fiddle: http://jsfiddle.net/xYsRA/1/ window.onerror = function (msg, url, line) { console.log(“Caught[via window.onerror]: ‘” + msg + “‘ from ” + url + “:” + line); return true; // same as preventDefault }; window.addEventListener(‘error’, function (evt) { console.log(“Caught[via ‘error’ event]: ‘” + evt.message + “‘ from ” + evt.filename + “:” + evt.lineno); console.log(evt); … Read more
FileNotFoundError is a subclass of OSError, catch that or the exception itself: except OSError as e: Operating System exceptions have been reworked in Python 3.3; IOError has been merged into OSError. See the PEP 3151: Reworking the OS and IO exception hierarchy section in the What’s New documentation. For more details the OS Exceptions section … Read more
How about something like this: public T DeadlockRetryHelper<T>(Func<T> repositoryMethod, int maxRetries) { int retryCount = 0; while (retryCount < maxRetries) { try { return repositoryMethod(); } catch (SqlException e) // This example is for SQL Server, change the exception type/logic if you’re using another DBMS { if (e.Number == 1205) // SQL Server error code … Read more
Handling Errors A sort of an “older style” of error handling is available to us in VBScript, that does make use of On Error Resume Next. First we enable that (often at the top of a file; but you may use it in place of the first Err.Clear below for their combined effect), then before … Read more
You’re probably better off using Try::Tiny which will help you avoid a number of pitfalls with older perls. use Try::Tiny; try { die “foo”; } catch { warn “caught error: $_”; };
To “re-interrupt” as a best practice: try{ //some code } catch (InterruptedException ie) { logger.error(“InterruptedException: “, ie); Thread.currentThread().interrupt(); } catch (ExecutionException ee) { logger.error(“ExecutionException: “,ee); } Usually, when a thread is interrupted, whoever is interrupting the thread, wants the thread to exit what it’s currently doing. However, make sure that you do NOT multi-catch: catch … Read more