The exception-handling tag has no wiki summary.
2
votes
3answers
278 views
What code lays behind C++ exception?
In C and C++ you can return a single variable inside a function. Now in the case that variable is returning data, and not an error code, you can use exceptions. But how is that possible? If you data ...
2
votes
1answer
108 views
What are the guidelines for either throwing an exception or failing silently for nonvalid arguments? [duplicate]
If you look at XContainer.Add(object content) method you can see that id does not require content to be not null. It just does nothing in case of null.
However List.AddRange(IEnumerable collection) ...
2
votes
1answer
232 views
Why would one transform a checked exception to an unchecked exception? [duplicate]
My buddy told me today that some programmers transform a checked exception (e.g. EJBException, SQLException...) to an unchecked (RuntimeException?)
My buddy explained a call stack where if you change ...
1
vote
1answer
102 views
Can AspectJ or AOP in general be used to test exception handling?
I'm reading a book's chapter ("Controlled Exception Test" in "Testing Object-Oriented Testing") about testing exception handling in a running system (not at unit level). The conclusion is that it is ...
1
vote
2answers
121 views
Understanding unit testing for dynamically changing condition
I was trying to understand how to write unit tests for a few days now. I'm confused with following scenarios in the existing code.
In first function the max value changes depending on the object ...
2
votes
2answers
182 views
We need a custom strategy for collecting unhandled application exceptions. What are our options?
"Unhandled exception" term
In .NET Framework, unhandled exceptions are the exceptions which were not handled by the application itself, and result in a crash. In a case of a desktop application, it ...
0
votes
2answers
256 views
Defensive Programming vs. Exception Handling [duplicate]
I have a question about defense programming and handling of exceptions.
Here is a pseudo-code snippet first:
try {
// do some core logic;
} catch (BadException e) {
ErrorCode ec = ...
36
votes
7answers
2k views
Are there legitimate reasons for returning exception objects instead of throwing them?
This question is intended to apply to any OO programming language that supports exception handling; I am using C# for illustrative purposes only.
Exceptions are usually intended to be raised when an ...
12
votes
5answers
835 views
Strengthening code with possibly useless exception handling
Is it a good practice to implement useless exception handling, just in case another part of the code is not coded correctly?
Basic example
A simple one, so I don't loose everybody :).
Let's say I'm ...
0
votes
1answer
104 views
Exception handling class: static or object-oriented?
I am working in a windows service (using VB.Net) for internal use of my department. When ever a certain type of exception (FooException for now on) is captured, I follow the same logic:
Log the ...
1
vote
3answers
208 views
Am I handling my exceptions in a sensible manner?
I'm still restructuring the code I have been given to update on my current work project, and I've come to the point where I'm looking at how the code handles an 'exceptional' input, that doesn't ...
0
votes
1answer
743 views
Exception Handling in Java web application
I know exception handling is a topic often discussed in the world of Java. I've read a few threads on here and SO as well.
...
1
vote
2answers
165 views
Wrapping specific checked exception in domain unchecked ones? [duplicate]
Uncle Bob says in Clean Code book that Unchecked Exceptions should be used. Now JDK has some checked exceptions: IOException, IllegalAccessException etc. which cannot be avoided.
In my application ...
17
votes
8answers
1k views
Error handling - Should a program fail on errors or silently ignore them
I'm writing a simple little program to transmit MIDI over a network. I know that the program will encounter transmission problems and / or other exception situations that I won't be able to predict.
...
6
votes
3answers
824 views
Throwing an exception inside finally
Static code analyzers like Fortify "complain" when an exception might be thrown inside a finally block, saying that Using a throw statement inside a finally block breaks the logical progression ...
4
votes
7answers
1k views
Is it a acceptable approach to put try catch wherever null pointer exception occurs?
There are instances where the references to objects, fields, variables etc can be null and there might be a possible occurrence of Null Pointer exception occurring at that point.
Is is a permanent ...
2
votes
3answers
215 views
Why does File.Open in .Net throw exceptions and not follow exception handling best practices? [duplicate]
I have read at many places including this - http://msdn.microsoft.com/en-us/library/seyhszts.aspx - that you should use exception handling when something is truly exceptional.
The .Net File.Open ...
1
vote
2answers
207 views
c++ exceptions vs. preliminary error condition checks
Preamble
One of the concepts used in writing Python code is "Easier to ask for forgiveness than permission", aka EAFP. Literally this means that instead of doing checks, whether an operation is ...
2
votes
1answer
287 views
Why would I use Control.Exception in Haskell?
I'm trying to really master Haskell error handling, and I've gotten to the point where I don't understand why I would use Control.Exception instead of Control.Monad.Error.
The way I can see it, I can ...
2
votes
1answer
67 views
Reporting and handling asynchronous process errors to a client
I have a product with two separate applications. The core of the product lives in the database (oracle) and runs according to a schedule. The other is a client application (currently ASP.NET MVC3) ...
3
votes
2answers
317 views
Best way to throw exception and avoid code duplication
I am currently writing code and want to make sure all the params that get passed to a function/method are valid. Since I am writing in PHP I don't have access to all the facilities of other languages ...
4
votes
2answers
433 views
Decision for Unchecked Exceptions in Scala
As a java programmer, I have always been critical of Unchecked Exceptions. Mostly programmers use it as an en-route to coding easiness only to create trouble later. Also the programs (though untidy) ...
1
vote
1answer
237 views
Central Exception Handler
Recently I've been thinking about a general ExceptionHandler, that I could initialize once in my app context and inject it everywhere. The idea that it will have quite simple interface with just ...
5
votes
3answers
931 views
Exception Handling Frequency/Log Detail
I am working on a fairly complex .NET application that interacts with another application. Many single-line statements are possible culprits for throwing an Exception and there is often nothing I can ...
2
votes
4answers
156 views
How to initialize object which may be used in catch clause?
I've seen this sort of pattern in code before:
//pseudo C# code
var exInfo = null; //Line A
try
{
var p = SomeProperty; //Line B
exInfo = new ExceptionMessage("The property was " + p); ...
6
votes
2answers
214 views
Where should I handle fatal exceptions
Suppose I have a controller that loads a file and hands it over to the processing.
Should I handle the exception in the file loader and return Null if something is wrong, or should I throw the ...
2
votes
3answers
892 views
Best method in PHP for the Error Handling ? Convert all PHP errors (warnings notices etc) to exceptions?
What is the best method in PHP for the Error Handling ?
is there a way in PHP to Convert all PHP errors (warnings notices etc) to exceptions ?
what the best way/practise to error handling ?
...
22
votes
9answers
5k views
Is catching general exceptions really a bad thing?
I typically agree with most code analysis warnings, and I try to adhere to them. However, I'm having a harder time with this one:
CA1031: Do not catch general exception types
I understand the ...
0
votes
1answer
627 views
Generic way of handling exceptions in windows phone? [closed]
I mean what are some of the ways other programmers deal with exception for example, when an error occurs when accessing a web service for say. If an example cant be given for windows phone, give the ...
7
votes
1answer
689 views
Best exception handling practices or recommendations?
I think the two main problems with my programs are my code structure/organization and my error handling. I'm reading Code Complete 2, but I need something to read for working with potential problems.
...
8
votes
3answers
422 views
Is it a security flaw to log the class and method name when an exception occurs?
I have the following :
public class doCheck(){
public void performCheck(){
try {
perform all checks......
}
catch(Exception e){
...
2
votes
3answers
457 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 ...
6
votes
4answers
245 views
Logging errors caused by exceptions deep in the application
What are best-practices for logging deep within an application's source? Is it bad practice to have multiple event log entries for a single error?
For example, let's say that I have an ETL system ...
7
votes
5answers
905 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 ...
7
votes
3answers
622 views
“how bad” is unrelated code in try-catch-finally block?
This is a related Q:
Is use of finally clause for doing work after return bad style/dangerous?
In the referenced Q, the finally code is related to the structure used and the necessity of ...
3
votes
3answers
132 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 ...
32
votes
8answers
5k views
Defensive Programming vs Exception Handling?
I'm working through the book "Head First Python" (it's my language to learn this year) and I got to a section where they argue about two code techniques: Defensive coding vs Exception handling. Here ...
14
votes
5answers
2k views
should I throw exception from constructor?
I know I can throw exception from constructor in PHP but should I do it? For example, if a parameter's value is not as I expected it.
Or should I defer throwing an exception till a method is invoked. ...
8
votes
8answers
675 views
Using a try-finally (without catch) vs enum-state validation
I have been reading the advice on this question about how an exception should be dealt with as close to where it is raised as possible.
My dilemma on the best practice is whether one should use a ...
2
votes
1answer
373 views
How would you use Redis for Exception Handling?
I was reading this transcript of an interview with a GitHub developer and he was describing how they use Redis:
Q: You mentioned using Redis. How do you use that?
A: We use Redis for
exception ...
31
votes
7answers
13k views
Why use try … finally without a catch clause?
The classical way to program is with try / catch but when is it appropriate to use try without catch? In Python the following appears legal and can make sense:
try:
#do work
finally:
#do ...
2
votes
6answers
502 views
How assertive should I be in handling exceptions in objects?
I have been writing in C# 4.0 a lot lately and trying to write as lean as possible. As such, I have not been using the classic try/catch blocks and using statements as often.
I understand the general ...
2
votes
3answers
589 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 ...
1
vote
3answers
425 views
C++ and system exceptions
Why standard C++ doesn't respect system (foreign or hardware) exceptions?
E.g. when null pointer dereference occurs, stack isn't unwound, destructors aren't called, and RAII doesn't work.
The ...
5
votes
2answers
378 views
Should exceptions of a subclass extend the superclass exceptions or my own namespace?
Our library extends another (third-party) library. When we create a child class in our library, and want to throw exceptions, should those exceptions extend the exceptions from the parent class or ...
17
votes
4answers
916 views
How to deal with checked exceptions that cannot ever be thrown
Example:
foobar = new InputStreamReader(p.getInputStream(), "ISO-8859-1");
Since the encoding is hardcoded and correct, the constructor will never throw the UnsupportedEncodingException declared in ...
17
votes
9answers
4k 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?
13
votes
2answers
700 views
Abstract exception super type
If throwing System.Exception is considered so bad, why wasn't Exception made abstract in the first place?
That way, it would not be possible to call:
throw new Exception("Error occurred.");
This ...
14
votes
10answers
5k views
Is using nested try-catch blocks an anti-pattern?
Is this an antipattern? It is an acceptable practice?
try {
//do something
} catch (Exception e) {
try {
//do something in the same line, but being less ambitious
...
14
votes
6answers
1k 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 ...
