An exception is an occurrence in an application process that requires deviation from the program's normal flow.

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12
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5answers
900 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
6answers
4k views

Converting an empty string to a number [closed]

If you are designing a function which should conver a string to an integer, how would you convert an empty string? The question is only about this one particular input value (empty string). Between ...
4
votes
8answers
1k views

Best Practice for Argument Checking

Say I have a web service with a method MyWebServiceMethod(string passedValue). The web service calls a method MyServiceMethod(string passedValue) where the value from the web service is passed along. ...
40
votes
7answers
19k views

Why is there no 'finally' construct in C++?

Exception handling in C++ is limited to try/throw/catch. Unlike Object Pascal, Java, C# and Python, even in C++ 11, the finally construct has not been implemented. I have seen an awful lot of C++ ...
1
vote
2answers
1k views

Assertions vs Exceptions - is my understanding of the differences between the two correct? [duplicate]

Design By Contract uses preconditions and postconditions of the public methods in a class together to form a contract between the class and its clients. a) In code we implement preconditions ...
0
votes
1answer
141 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 ...
2
votes
3answers
235 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 ...
22
votes
3answers
1k views

Why is Option/Maybe considered a good idea and checked exceptions are not?

Some programming languages like e.g. Scala have the concept of Option types (also called Maybe), which can either contain a value or not. From what I've read about them they are considered widely to ...
1
vote
2answers
3k 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
682 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
2k 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. ...
2
votes
7answers
1k views

better way to define an exception thrown by a method in Java?

I know how to define exceptions and all, but I'm not sure if the way I'm doing it is the most intuitive and readable by another users. I have a very simple method I've written that I want to throw an ...
15
votes
3answers
3k views

How many are too many nested function calls?

Quoted from MSDN about StackOverflowException: The exception that is thrown when the execution stack overflows because it contains too many nested method calls. Too many is pretty vague here. ...
35
votes
8answers
13k views

Are exceptions as control flow considered a serious antipattern? If so, Why?

Back in the late 90's I worked quite a bit with a code base that used exceptions as flow control. It implemented a finite state machine to drive telephony applications. Lately I am reminded of those ...
13
votes
4answers
13k 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 ...
11
votes
2answers
659 views

The suffix Exception on exceptions in java

Specifying a suffix of Exception on exception classes feels like a code smell to me (Redundant information - the rest of the name implies an error state and it inherits from Exception). However, it ...
0
votes
2answers
244 views

Is there anything special to consider when writing my own exception class in C++? [closed]

If I wanted to implement my own version of the std::exception for no good reason, are there any special things about implementing this kind of object that I should be aware of? It seems like a fairly ...
7
votes
8answers
5k 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 ...
-1
votes
1answer
205 views

Good library for combining .net stack traces [closed]

I currently report my production exceptions to a mysql database, where they have been collecting dust for the most part. The problem I faced is grouping the stack traces. I would like to be able to ...
0
votes
2answers
418 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 ...
4
votes
2answers
2k views

How to remove duplicate exception block code

I have good number of Service and DAO classes which has the same set of 30 line exception code block which gets repeated and it shows up in Code Duplication report. The approach which i can think of ...
10
votes
5answers
15k views

throwing runtime exception in Java application

I am working as a contractor designing enterprise Java application for my client in the role of a technical lead. The application will be used by end users and there will be a support team who will ...
60
votes
11answers
7k views

I've been told that Exceptions should only be used in exceptional cases. How do I know if my case is exceptional?

My specific case here is that the user can pass in a string into the application, the application parses it and assigns it to structured objects. Sometimes the user may type in something invalid. ...
1
vote
2answers
441 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 ...
33
votes
8answers
4k views

Are exceptions an OOP concept?

Having read a post yesterday, I realized I did not know much about the origin of exceptions. Is it an OOP related concept only? I tend to think it is, but again there are database exceptions.
4
votes
1answer
635 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
128 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) ...
2
votes
1answer
107 views

Data decoding initialization/Constructor error handling

I have a set of loadable data decoders for a specific type of data and a stream to read containing data. Now I want the program to select the correct decoder in a reliable way so I want to use a ...
4
votes
4answers
928 views

Having error codes option in C++ library for performance

I have written an open source and cross-platform C++ File Library which have exception and error codes. Exceptions can be disabled when the program is running. In that case, the user have to check the ...
3
votes
2answers
535 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 ...
9
votes
3answers
3k 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) ...
8
votes
5answers
1k views

“Programming error” exceptions - Is my approach sound?

I am currently trying to improve my use of exceptions, and found the important distinction between exceptions that signify programming errors (e.g. someone passed null as argument, or called a method ...
1
vote
1answer
579 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 ...
36
votes
4answers
4k views

Python Forgiveness vs. Permission and Duck Typing

In Python, I often hear that it is better to "beg forgiveness" (exception catching) instead of "ask permission" (type/condition checking). In regards to enforcing duck typing in Python, is this try: ...
6
votes
3answers
2k 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 ...
4
votes
3answers
123 views

Designing exceptions for conversion failures

Suppose there are some methods to convert from "X" to "Y" and vice versa; the conversion may fail in some cases, and exceptions are used to signal conversion errors in those cases. Which would be the ...
9
votes
2answers
371 views

Use an else after exception (or not)

Consider this bit of code: if (x == 1) { throw "no good; aborting" ; } [... more code ...] Now consider this code: if (x == 1) { throw "no good; aborting" ; } else { [... more code ...] } ...
2
votes
4answers
302 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
795 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 ...
1
vote
4answers
178 views

What is the best way to go about testing that we handle failures appropriately?

we're working on error handling in an application. We try to have fairly good automated test coverage. One big problem though is that we don't really know of a way to test some of our error handling. ...
5
votes
3answers
4k 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 ? ...
41
votes
10answers
4k views

Why are exceptions considered better than explicit error testing? [duplicate]

Possible Duplicate: Defensive Programming vs Exception Handling? if/else statements or exceptions I often come across heated blog posts where the author uses the argument: "exceptions vs ...
35
votes
11answers
17k 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 ...
39
votes
12answers
3k views

Why are errors named as “Exception” but not as “Error” in programming languages?

I've been thinking about that for quite a while actually. I am not a native english speaker myself but still I have years of programming experience and I always asked me this. Why is it named as ...
0
votes
1answer
2k 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 ...
47
votes
8answers
19k views

Return magic value, throw exception or return false on failure?

I sometimes end up having to write a method or property for a class library for which it is not exceptional to have no real answer, but a failure. Something cannot be determined, is not available, not ...
10
votes
1answer
2k views

Best exception handling practices or recommendations? [closed]

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
737 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
1k 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
437 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 ...