I have a PHP script that sends out critical e-mails that needs to reach its destination. I know how to check whether the e-mail sent successfully, the only issue is knowing whether it actually got to its recipient. Any suggestions? If there is no way of knowing, how would you handle this situation? ...
Hi, I'm wondering what good ways there would be make assertions about synchronization or something so that I could detect synchronization violations (while testing). That would be used for example for the case that I'd have a class that is not thread-safe and that isn't going to be thread-safe. With some way I would have some assertion...
Whatever its merits, Adobe's Actionscript 3 presents what may be a unique opportunity to explore the consequences of typed versus untyped languages, because it is pretty much a strict superset of javascript, with all the syntactic benefits/overhead of strict type declarations, declarative casting, etc. What this makes possible is compar...
Hi, I would like to learn about CRC and looking around for any good theory explanation. I would be very thankful if anyone could provide any goo resource about the topic. Thanks! ...
I have a hypothetical situation of sending data units, each of a thousand bytes. Failure rate is rare but when a error does occur it is less likely to be a single bit error and more likely to be an error in a few bits in a row. At first I thought of using a checksum, but apparently that can miss bit errors larger than a single bit. A pa...
This is a dumb mistake: List<Foo> fooList = new List<Foo>(); Foo f = new Foo(); while (something.Read()) { f.Fill(something.GetRecord()); fooList.Add(f); } Of course, I should instantiate a new Foo inside the loop. Can a compiler detect this kind of mistake at compile time? To naïve eyes it looks like it should be able to ...
I have recently been reading about Error Correction for a job interview and have written a number of programs that use n-ary BCH (Bose, Chaudhuri, Hocquenghem) cyclic codes and have now written a script that will generate phone numbers once given an "area code" for a given user (encoding) and will decode it and will repair up to two erro...
What is CRC? And how does it help in error detection? ...
I'm making a refactoring tool that automates a few of the more trivial code styling things dealing with StyleCop. One of the things I'd like my add-in to be able to do (as an optional feature the developer can turn on/off) is automatically call the "Organize Usings -> Remove and Sort" functionality. This is a simple macro call. Howeve...
Once again I was in a design review, and encountered the claim that the probability of a particular scenario was "less than the risk of cosmic rays" affecting the program, and it occurred to me that I didn't have the faintest idea what that probability is. "Since 1/2^128 is 1 out of 340282366920938463463374607431768211456, I think we...
I need to serialize some data in a binary format for efficiency (datalog where 10-100MB files are typical), and I'm working out the formatting details. I'm wondering if realistically I need to worry about file corruption / error correction / etc. What are circumstances where file corruption can happen? Should I be building robustness t...
This question is a follow-up/in relation to my previous question here: http://stackoverflow.com/questions/3518498/sql-server-is-there-a-need-to-verify-a-data-modification I did some googling, and the paper (which I can't access) "When the CRC and TCP checksum disagree" indicates the occurrence of an unchecked error rate of 1 in 16 milli...