Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [error-detection]

The tag has no usage guidance.

1
vote
2answers
187 views

Error Monitoring On The Apps Which I'm Selling

I'm developing JS and PHP scripts and selling them on various marketplaces. But I need to track/monitor errors on my scripts. Usually, I use Sentry for own web apps, but I'm not sure if it's okay to ...
-1
votes
2answers
73 views

How to structure an application (and its user interface) such that extraneous and/or malformed data can be handled?

I recently applied for a position as a software developer. As a part of the recruitment process, I was given an assignment that involves reading data from a file. The thing is that the example file ...
0
votes
1answer
86 views

Reverse engineering a checksum or CRC

I am trying to reverse engineer a checksum or CRC wherein an 8 bit number* gets converted to a 5 bit number for error checking. I have an incomplete list of data values and checksums, and need to ...
1
vote
1answer
192 views

Hamming codes detect error in check bits

I just started learning about hamming codes and they're pretty awesome. I was just wondering though, are the check bits able to detect error in the check bits, as in, if one of the check bits is ...
-1
votes
1answer
38 views

Working On Remote Errors in a Variety of Environments Without FTP or SSH Access

BACKGROUND: I've been developing in PHP for two years - self taught, and beyond the most basic editing, really just a year and a half - but my experience is limited to a small number of environments. ...
-1
votes
1answer
79 views

Is this a named pattern: Injecting specialized objects to detect fault conditions

I've got an idea, but I wonder whether somebody else already has named it. I'm writing code to control a machine with actuators, motors, etc., and software will be responsible for preventing ...
14
votes
3answers
3k views

How to handle post-validation errors in command (DDD + CQRS)

For example, when you submit a Register form, you have to check in the Domain Model (WriteModel in CQRS) that it is in a valid state (example, email address syntax, age, etc). Then you create a ...
2
votes
1answer
229 views

Why is checking weird bit errors important in garbage collectors?

Here's a rough translation of a tweet by @xharaken. "Space rays hit computers and mess up the bits in the memory" "hardware bugs mess up the bits in the memory" such things almost never happen, but ...
4
votes
4answers
954 views

Should exceptions be raised higher up or lower down or both? [closed]

When calling some function in a Python application, the function often calls functions deeper down which again call functions deeper down, etc. It is easy to unknowlingly pass a bad value to the top-...
5
votes
5answers
681 views

Debug function input vs expecting code users to read the documentation - How far do I go? [duplicate]

I could write an endless amount of debugging code to handle the various components of input for a function, check that the correct data types are used, make sure things are decendants of the proper ...
0
votes
0answers
82 views

Checking for null pointers or allowing a math library to segfault?

I've been going through the GNU GSL design document and came across this interesting line in the Test suites section: N.B. Don't bother to test for null pointers -- it's sufficient for the library ...
5
votes
5answers
10k views

Checking array size in C/C++ to avoid segmentation faults

So it's well known that C does not have any array bounds checking when accessing memory. Nowadays, if you call myArray[7] when you initialised it as int myArray[3], your program will get a segfault ...
2
votes
2answers
406 views

Program like NASA?: Margaret Hamilton's Three Primitive Control Structures [closed]

On slide 19 in a presentation Margaret Hamilton describes three primitive control structures. My goal is to reduce the probability of errors in my code by working with this "design framework". I am ...
0
votes
2answers
158 views

can a logic error happen way later than its cause? [closed]

For comparison, for a runtime fatal error, it is often that the cause of the error is way before the error crashes a program. For a logic error, it doesn't crash a program. It happens when the state ...
1
vote
3answers
449 views

How do you avoid looping mistakes? Mistakes that are not detected by systems [closed]

I had this crazy initialisation -- documentList = new ArrayList<Map<String,Integer>>(); which I intended to store a new map everytime in a loop but unfortunately put itself inside the ...
19
votes
5answers
3k views

Detecting misusage of delete[] vs. delete at compile time

I'd like to know if it's possible to detect the delete error commented below at compile time? Especially, I'd like to hear about g++ compiler. ClassTypeA *abc_ptr = new ClassTypeA[100]; abc_ptr[10]....
4
votes
1answer
337 views

Is '@' Error Suppression a Valid Technique for Testing for an Optional Array Key?

Rarst and I were debating offline about the use of the '@' error suppression operator in PHP, specifically for use to test for existence of "optional" array keys, i.e. array keys that are being used ...
24
votes
7answers
14k views

What is a faster alternative to a CRC?

I'm doing some data transmission from a dsPIC to a PC and I'm doing an 8-bit CRC to every block of 512 bytes to make sure there are no errors. With my CRC code enabled I get about 33KB/s, without it I ...