There are a lot of ways that you can deal with this and frankly none of them is intrinsically ‘right’. You will have to decide for yourself, which method is more ‘comfortable’ for you – it’s always a mater of preferences (although there are certain techniques you should avoid and for good reasons). It will … Read more
The ExceptionUtils#getRootCause() method can come in very handy in such situations.
It seems to me that this topic is very strange and confused. Could someone lights me up? Definitely. I’m not a PHP user, but I might have a little insight after having worked with try/catch in ActionScript, Java, and JavaScript. Bear in mind though, that different languages and platforms encourage different uses for try/catch. That … Read more
Finally always executes. That’s what it’s for, which means its return value gets used in your case. You’ll want to change your code so it’s more like this: function example() { var returnState = false; // initialization value is really up to the design try { returnState = true; } catch { returnState = false; … Read more
No, it’s not a bad practice. Putting return where it makes sense improves readability and maintainability and makes your code simpler to understand. You shouldn’t care as finally block will get executed if a return statement is encountered.
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
I usually do it like this: try { // Use the resource. } catch( Exception ex ) { // Problem with the resource. } finally { // Put away the resource. closeQuietly( resource ); } Elsewhere: protected void closeQuietly( Resource resource ) { try { if (resource != null) { resource.close(); } } catch( Exception … Read more
“Programs must be written for people to read, and only incidentally for machines to execute.” Abelson & Sussman, SICP, preface to the first edition Always aim for readable code. The key thing to remember is: Avoid try-catch in performance-critical functions, and loops Anywhere else they won’t do much harm. Use them wisely, use them when … Read more
The First Syntax: The scope of the try block starts after the Member Initialization list has been completed, So any exception thrown during Member Initialization will not be caught by this try-catch block. The second syntax: It ensures that if an exception gets thrown during Member Initialization list then you are able to catch the … Read more
Use a tryCatch expression around the function that can throw the error message: testFunction <- function (date_in) { return(tryCatch(as.Date(date_in), error=function(e) NULL)) } The nice thing about the tryCatch function is that you can decide what to do in the case of an error (in this case, return NULL). > lapply(dates2, testFunction) [[1]] [1] “2010-04-06” [[2]] … Read more