An exception is an occurrence in an application process that requires deviation from the program's normal flow.
1
vote
3answers
337 views
Good practice or service for monitoring unhandled application errors for a small organization
I'm working with multiple software with varying ways of monitoring for errors. When I make software, I usually send email with the stack trace to admins(usually me). Some customer software is ...
35
votes
10answers
4k views
Are there any real-world cases for C++ without exceptions?
In When to use C over C++, and C++ over C? there is a statement wrt. to code size / C++ exceptions:
Jerry answers (among other points):
(...) it tends to be more difficult to produce truly tiny ...
7
votes
5answers
651 views
Maybe monad vs exceptions
I wonder what are the advantages of Maybe monad over exceptions? It looks like Maybe is just explicit (and rather space-consuming) way of try..catch syntax.
update Please note that I'm intentionally ...
1
vote
2answers
837 views
Exception hierarchy design
In my company we are building a webapp containing serveral central services that we design ourselves and then specify as interfaces. I.e. the interfaces are application specific and they are then ...
11
votes
5answers
514 views
When to start writing Exception Handling, Logging
When do you start writing your Exception Handling Code? When do you start writing Logging Statements.
For the purpose of elaborating this question, let us assume that we are on .NET platform with ...
3
votes
3answers
125 views
Using Exception Emails as a System Status Indicator
I'm working through our bug list today and I'm trying to clear up/fix issues that we commonly receive exception emails for. Although all the exceptions (so far) are handled, some don't actually ...
14
votes
6answers
2k views
Efficient try / catch block usage?
Should catch blocks be used for writing logic i.e. handle flow control etc? Or just for throwing exceptions? Does it effect efficiency or maintainability of code?
What are the side effects (if there ...
7
votes
6answers
2k views
Do you handle Out-Of-Memory conditions?
What do you do when malloc returns 0 or new throws exception? Just halt or try to survive OOM condition/save the user's work?
11
votes
9answers
2k views
if/else statements or exceptions [duplicate]
Possible Duplicate:
Defensive Programming vs Exception Handling?
I don't know, that this question fit better on this site, or Stack Overflow, but because my question is connected rather to ...
4
votes
2answers
331 views
I have a stacktrace and limit of 250 characters for a bug report
I'm developing an xbox indie game and as a last-resort I have a try...catch encompassing everything.
At this point if an exception is raised I can get the user to send me a message through the xbox ...
1
vote
3answers
91 views
Communicating details of method result?
I have code like this (pseudocode)
foreach(Box box in boxes)
{
if(boxFilter.PassesFilter(box))
{
// do something useful
}
else
{
Log.Log(format("Box %s was rejected", ...
3
votes
1answer
807 views
Unit testing invalid inputs; ArgumentException vs. Custom Exception
In unit tested code I often have multiple checks on the arguments on any method before the actual "work" of the method is begun:
public void DoSomething(string test)
{
if ...
8
votes
4answers
400 views
Exceptions as asserts or as errors?
I'm a professional C programmer and a hobbyist Obj-C programmer (OS X). Recently I've been tempted to expand into C++, because of its very rich syntax.
So far coding I haven't dealt much with ...
6
votes
4answers
454 views
Is rethrowing an exception leaking an abstraction?
I have an interface method that states in documentation it will throw a specific type of exception. An implementation of that method uses something that throws an exception. The internal exception ...
6
votes
12answers
1k views
Should integer divide by zero halt execution?
I know that modern languages handle integer divide by zero as an error just like the hardware does, but what if we could design a whole new language?
Ignoring existing hardware, what should a ...
7
votes
1answer
2k views
Why does Java exit with success after an uncaught exception?
Any time a Perl, Python, C++ or Tcl program halts with an unhandled exception, those language runtimes take care to register a non-zero exit code for the process. Even Eclipse-based programs return 1 ...
8
votes
2answers
293 views
How can I debug exceptions that are not easily reproducible and only occur in a production environment?
I am working on an issue where the exception only occurs in our production environment. I don't have access to these environments, nor do I know what this exception means. Looking at the error ...
4
votes
1answer
190 views
Nulls in every type and checked exceptions in Java?
I know that null being added to every type in Java is a source of much frustration regarding the language's type system. At the same time I generally hear complaining about checked exceptions - that ...
16
votes
7answers
2k views
Is it good practice to catch a checked exception and throw a RuntimeException?
I read some code of a colleague and found that he often catches various exceptions and then always throws a 'RuntimeException' instead. I always thought this is very bad practice. Am I wrong?
14
votes
6answers
985 views
Why not use the word bug instead of exception?
If we refer to exceptions as bugs, why not just call it a bug in the first place instead of an exception?
If in the code it's called exception and as soon as it occurs it's called a bug. Then why not ...
3
votes
3answers
1k views
How to store exception messages
How are exception messages commonly stored? for any domain. I'm thinking about this from a maintenance standpoint.
if(!Condition1)
throw new Exception("Some exception");
if(!Condition2)
...
8
votes
7answers
722 views
Use of NotImplementedException
Is it considered bad practice to throw NotImplementedException for code you haven't written yet? Possibly TODO comments would be considered safer?
0
votes
2answers
191 views
Is it possible to prune the stacktrace returned for a custom exception in PHP
I am working on a project in PHP that does a lot of input validation and can throw different custom exception classes in various layers of the application. To make the project code easier to read, ...
2
votes
3answers
515 views
What do you think of this Exception handling practice
I'm working on a project that includes a lot of creating/manipulating and reading JSONObjects and arrays but not in a systematic way. So there is JSON code everywhere.
It is ok for me except that ...
0
votes
2answers
382 views
A good substitute for ASMX web service methods, but not a general handler
The best thing I like about ASP.NET MVC, is that you can directly call a server method (called action), from the client. This is so convenient, and so straightforward, that I really like to implement ...
8
votes
9answers
729 views
Should security restrictions cause a service to return null or throw an exception?
I'm in a bit of a disagreement with a more experienced developer on this issue, and wondering what others think about it; our environment is Java, EJB 3, services, etc.
The code I wrote calls a ...
12
votes
2answers
645 views
Is it more sensible to log exceptions in a catch-all or in a base exception class?
I'm in the process of refactoring a fairly large web app. One of the major issues is inconsistent error handling and I'm trying to come up with a sensible strategy.
I've created a custom error ...
9
votes
2answers
526 views
What is a 'good number' of exceptions to implement for my library?
I've always wondered how many different exception classes I should implement and throw for various pieces of my software. My particular development is usually C++/C#/Java related, but I believe this ...
19
votes
3answers
2k views
Why are exception specifications bad?
Back in school some 10+ years ago, they were teaching you to use exception specifiers. Since my background is as one of them Torvaldish C programmers who stubbornly avoids C++ unless forced to, I only ...
13
votes
7answers
762 views
Do exceptions basically exist to prevent a system from crashing?
Second of all, I was wondering if anyone knew what the difference was between exceptions (in the realm of exception control flow) and Exceptions (such as used in Java).
But are they there to ...
2
votes
1answer
71 views
What are possible/useful implementations when extending exceptions?
I have seen a lot of exceptions - custom or integrated in the language (PHP) itself that have no differences but their class name.
When extending default exceptions to use within your own code, are ...
3
votes
2answers
296 views
Why do interrupts need to be turned off when inside other interrupt code?
Simple question that will help me understand my OS class... thanks!
Basically, why is it unsafe to have an interrupt within an interrupt? (or exception within exception)
2
votes
2answers
127 views
How to handle fired listeners exceptions
This is more of a design question and i was hoping to get pros and opinions on what makes sense.
BACKGROUND
Imagine something that holds one or more event listeners. Every now and then the thing ...
7
votes
3answers
2k views
Should I use try catch in my test methods?
I am doing unit testing.
I am trying to test one function.
I call it from my test component. But If remote function cannot handle the exception then my tester component will also get exception, I ...
4
votes
2answers
401 views
Is there a term for the error-handling anti-pattern of discarding all available info and just returning failure?
From time to time (unfortunately way too often) I have to fix code such as this:
// C++ code
bool anyOldFunction(Param p) {
try {
...
if(some_condition_here) {
handleErrorX();
return ...
8
votes
4answers
444 views
Is exception handling a cross-cutting concern?
I don't see much of a difference between the concerns of exception handling and logging in that both are cross cutting concerns. What do you think? Shouldn't it be handled separately on its own rather ...
11
votes
3answers
905 views
How did the idea of Exception-handling emerge into programming languages? [duplicate]
Possible Duplicate:
Who designed exceptions?
Today if we look at any language, exception handling is almost a compulsory feature. The languages that didn't have it earlier are implementing ...
5
votes
5answers
2k views
Is it not a good practice to handle runtime exceptions in the code?
I am working on a Java application, and I see that Run time exceptions are handled in many places. For example,
try {
//do something
}catch(NullPointerException e){
...
4
votes
2answers
408 views
Checked vs Unchecked vs No Exception… A best practice of contrary beliefs
There are many requirements needed for a system to properly convey and handle exceptions. There are also many options for a language to choose from to implement the concept.
Requirements for ...
19
votes
13answers
2k views
Why are null references shunned while throwing exceptions is considered okay?
I don't quite understand the consistent bashing of null references by some programming language folks. What's so bad about them? If I request read access to a file that doesn't exist then I'm ...
11
votes
4answers
947 views
Good use of try catch-blocks?
I always find myself wrestling with this... trying to find the right balance between try/catching and the code not becoming this obscene mess of tabs, brackets, and exceptions being thrown back up ...
11
votes
9answers
1k views
What's the best way to manage error logging for exceptions?
Introduction
If an error occurs on a website or system, it is of course useful to log it, and show the user a polite message with a reference code for the error.
And if you have lots of systems, you ...
4
votes
3answers
395 views
Improving exception handling? [duplicate]
I am a newbie programmer and I recently started learning about exception handling in Java.
I know what try, catch and finally blocks do, but I really need to understand how to use them well and where ...
8
votes
5answers
2k views
How to simulate events that cause exceptions to test try/catch blocks?
I understand how exceptions work and how to catch and handle them in C# but how can I simulate events that may cause an exception to ensure that it is caught correctly? For example, is it possible to ...
1
vote
1answer
309 views
How does compiler handle exceptions that are implicit? Looking for design strategies
Throughout the function handleException, the exception encountered is implicit. How does the compiler handle such implicit passing of exceptions? [For e.g. in C++ methods, this pointer is passed to ...
25
votes
12answers
1k views
What are developer's problems with helpful error messages?
It continue to astounds me that, in this day and age, products that have years of use under their belt, built by teams of professionals, still to this day - fail to provide helpful error messages to ...
32
votes
4answers
990 views
How to write a good exception message
I'm currently doing a code review and one of the things I'm noticing are the number of exceptions where the exception message just seems to reiterate where the exception occurred. e.g.
throw new ...
6
votes
4answers
134 views
Do you have any teamguidelines regarding exceptions?
My team recently inherited a project from a team where the amount of developers dropped so low they had to offload some work. One of the projects we inherited was a project littered with nested code, ...
2
votes
1answer
55 views
Error handling, creating time line, need help defining what aspects of the environment need tracking
For my final year project, I'm working on a script that will run your python program and provide a time line of events(so far working on assignments) and create a story of what happened(the changes in ...
29
votes
19answers
2k views
Is it ever ok to have an empty catch statement?
I thought about it and could not come up with an example. Why would somebody want to catch an exception and do nothing about it? Can you give an example? Maybe it is just something that should never ...
