An exception is a rarely occurring (exceptional!) condition that requires deviation from the program's normal flow.

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Count check before Linq Single() call

Should I check Count before Linq Single() call if I excpecte only one elemet? ...
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57 views

Extended exception for network errors in Python

I need a custom exception for network errors that holds a related exception and more than one URL (the first one as the used service has its URL but it indirectly calls other URLs), so I wrote this: ...
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23 views

Python exception handling class - Getting as much details printed

I'm trying to write a Exception Handling class in Python so that I can re-use. If you have any ideas on how I can improve this to output more detailed information I would appreciate it: ...
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119 views

DAO to create, update, and delete a project

I'm trying to write my first "complex" program in Java. So far, I created a local H2 database but I'm not sure about the quality of my code (I'm newbie in Java) because I don't know how I can deal ...
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1answer
103 views

Using a Boolean method that never returns “false” to check user permissions

I need to check that a user is allowed to save/retrieve contacts to/from the database by calling a web service, and return an HTTP403 with an explanation if it is not the case. So for the sake of ...
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1answer
37 views

Pretty handling FileNotFoundException

I have got a piece of code that initialize Scanner in two possible ways: no argument constructor creates Scanner that uses stdIO (System.in) as source contructor with String, which creates Scanner, ...
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1answer
40 views

Retrieving access token from SharedPreference

Here is code that retrieves an access token from SharedPreference. ...
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0answers
65 views

AggregateException handling

How do you handle AggregateException? It is really useful in many TPL or business scenarios, but handling is a real pain. I defined the following three extensions ...
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1answer
53 views

Custom Exceptions based off the Visual Studio snippet

I'm creating my own application exception types so I could catch them higher in the call stack and take specific action. I'm looking to get feedback on the latest exception I've written for two ...
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1answer
48 views

Function to validate parameter and throw exception when invalid

I've asked a question receiving excessive (in a good sense) feedback. After I've incorporated it into the code, it changed substantially and I felt that I'd need opinion on the new version. Posting ...
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96 views

Exception-logging handler for the DAO layer

I'm a bit clueless on how to handle exceptions. What I've think so far is to use a custom error page for the users so they can't see the full exception for security reasons and log the exception in a ...
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2answers
185 views

“Better” Exception with autogenerated message

Because I don't like writing the same useless exeption messages all the time ;-) I thought I create a better exception that would make this for me. This is what I came up with: ...
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109 views

Throw an exception which contains a nested set of previous exceptions

I have a set of domain objects which try to find a solution to a problem. The top level object has an algorithm which splits up the problem and delegates it to lower level objects, which in turn do ...
3
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242 views

Custom error/fatal error and exception handler in PHP

Introduction I wrote three functions that aims to log errors and exceptions as well as show a user a generic error page. Would appreciate some feedback on it with regards to the PSR standards and if ...
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143 views

Cancellable futures, interaction with throwing destructors

I'm reinventing std::future from scratch (for an upcoming talk). I'd like to incorporate as many of the latest and most likely-to-succeed proposals as possible, and ...
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1answer
78 views

Working with Exceptions Exercise

The task: There is an AccountManager that makes transfers. It receives 2 arrays of the same size: accounts and sums. They need to be transferred to the accounts ...
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2answers
256 views

Parsing double from string

I'm trying to parse Double from String in Java. The string input is not necessarily a number, any non number input should be ...
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2answers
82 views

A closed exception system

I am working on yet another toy project that I named SGL (for "Standard Generic Library" since it mimics some features of C++'s STL as well as a few more utilities from the C++ standard library). ...
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4answers
452 views

C# PasswordService class

I am new to C# and develop a configurable PasswordService class. As the code works the next step is to improve the code. Right now there are the following options: ...
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3answers
31 views

Managing batch runs of Fortran programs

I have a program which basically manages batch runs of some underlying Fortran programs, and at the end, I want to move all the related files into a different directory. At the moment, there is ...
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57 views

Extending Exceptions with module-specific prefix, intended for parsing error reporting

For one of my [WIP] project, I extended the dictionary class a lot with specific handlers, as such I determined that I wanted KeyError and ...
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663 views

Customized Exception

I am building my "base exception to end all base exceptions" class in C# and was looking for some opinions on my implementations so far. Ideally my usage of integrated Rethrow, Throw, and ThrowFatal ...
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1answer
1k views

Checking if a directory exists in FTP without relying on exception handling

I've written a method to check if a directory already exists on an FTP server. The only way I could see to make this work was to return a different result from the method if an exception is thrown - ...
7
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1answer
530 views

Morse Code Converter

I wanted an uncomplicated project to get myself started again. Although this works I was wondering if it's the best approach, especially when it comes to validation parts? It seems to me that I'm ...
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2answers
76 views

Simple interface and class for holding text to be analyzed

I am making a sentiment analysis library targeted first at social media text (like Twitter) and then I will expand it for more general use. For the first step I am making a simple interface and a ...
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3answers
7k views

Use of Exception to log execution stack trace

I've been back and forth with a colleague over the use of Throwable.fillInStackTrace. This Log class is meant to wrap the Simple ...
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2answers
1k views

Guard statement extension methods for common object guards

I wrote a couple of extension methods for common guard statements I write a lot. These are extension methods for Object, and allow me to quickly guard against common scenarios. I'm using .Net 3.5 ...
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668 views

Simple factorial program using recursion

Two concepts I realized I needed to understand and use more are recursion and Exceptions. Thus, I combined both in the following program. Although it began with a focus on using recursion it became ...
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404 views

“Nice Angles” - Code Eval challenge

Out of fun, I solved "Nice Angles" challenge on CodeEval in C# 4.0: CHALLENGE DESCRIPTION: Write a program that outputs the value of angle, reducing its fractional part to minutes and ...
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318 views

Cleaning up file resources in a DRY manner

I've written a function that generates a report, and then sends it as an attachment to an email. I don't want to clutter the function with a lot of calls to close up the filesystem, if there was an ...
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415 views

Custom exit with only some exceptions in Python

I want to define an exit code for some exceptions and some exceptions only. I want that the only input is that dictionary with the definition. ...
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3answers
4k views

Throwing exceptions when validation fails

When I want to check the validity of an attendance being entered into the system, I perform following action. AttendancePresenter Class ...
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2answers
3k views

Storing a message from a queue

I am doing a code review and I have encountered a class in an application that is throwing an exception in the constructor: ...
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1answer
38 views

Good approach to raise an exception

I have class House and module Lockable. Locking and unlocking House should reflect the real ...
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1answer
2k views

Unhandled Exception handler that captures a screenshot

So, whether you're still in the development stages or your app is already on the app store, you always hope your app isn't crashing. But if it is, you want to be sure you've got good crash reports, ...
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2answers
2k views

Using finally with return statement or not

I was wondering if it is the proper way to always put the return statement of a function with a try-catch clause in the finally ...
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1answer
156 views

How to add exceptions in a class that reads a config file?

I am using Boost for reading a config file that is in the .json format. I am using a class to do this and I am calling exit(message) in case of bad values or ...
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236 views

Python and Exception Handling IOError [closed]

I'm trying to work with exception handling by displaying "No Such File" when the file doesn't exist. I need to use a try statement. ...
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301 views
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203 views

Throw exception in favor of an error?

I've been reviewing my previous projects for the last few days. I've found that I never return an error from any of my methods. I always throw exceptions. I googled about exceptions vs errors and I ...
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16k views

Insert a character into a string

For practicing reasons I would like to write a method which inserts a character into a string. I would like to know: What is the best practice concerning placement of a comment within methods? For ...
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3answers
751 views

How to chain exceptions?

I have some function like: ...
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4answers
3k views

Is it a good practice to put an exception handler in every method?

I always add an exception handler when a new method is created, and I don't know if it is a good or bad practice. I thought it may be a bit of an annoyance when viewing the source code. Is it a good ...
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1answer
98 views

Generator expression in combination with StopIteration: kind of a hack?

The first piece of code should cover the standard expected data. But as you can easily see, the data not always conveys to this standard. The code works great but I wonder if this is thought be a ...
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1answer
679 views

Throw an exception to control the flow of code execution

There is a recommendation not to use an Exception to control the flow of execution. This gives me a reason for doubt when I do something like this: ...
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467 views

SDL boilerplate

The SDL code example on the SDL_Init page seems to be overly verbose, creating an exception class entirely for SDL_Init. I ...
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1answer
255 views

Rethrowing exception just as an information

I have something like that: My custom exception class: ...
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2k views

Reading a text file, need help cleaning exception handling

Which of the following is cleaner / more adopted standard of handling exceptions while coding a stream ? I would also appreciate a reason why one of the following trumps over other ? In my opinion I ...
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172 views