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When discussing best or safest C programming practices with various C gurus on the Internet, the "MISRA-C guidelines for the use of C language in critical systems" often pops up as a source. This ...
From time to time I will have large structural changes to make on my MySQL DB, things like adding columns, changing datatypes, adding indexes etc. These types of changes result in downtime and what...
Google Sheets isn't a company name, it's a product name. A tag called google-sheets is perfectly fine. Google doesn't market this product as "Sheets", they market it as "Google Sheets". What is not...
Any time an SQL SELECT query does not have any explicit ORDER BY clause, I personally find it useful to mentally read it as saying "I don't care about ordering of the output of this query". If you...
I'm trying to learn Linux, and I've got plenty of questions to ask on the subject, especially when it comes to differences between Linux's command line and Apple's. Would such questions be accepted...
I've got this sample regex: Pattern p = Pattern.compile("(?:([aeiou]+)[0-9]+|([123]+)[a-z]+)\\W+"); It basically has the following parts: one or more lowercase vowels ([aeiou]+), followed by one ...
Why would the second way be faster? Generally speaking, the first form will perform worse (as well as looking a lot worse) than the second. You are hitting an edge case where the opposite is true...
Context Over the years I had a hard time addressing questions about software architecture like these ones . Soon after posting them, they receive a couple of downvotes and close votes which set the...
I saw at least one compiler (Codewarrior for HC12) warn me if I use a function without using it's return value. Other compilers (clang/gcc) do not issue a warning though, even when using the std=90...
I'm trying to make a trait method callable on mutable slices of a type implementing that trait (see main). Rust doesn't like me for it. use core::convert::AsMut; trait A { type B; fn f(m: ...
After enabling two factor authentication (2FA) for my account I'm only notified It is successfully turned On. I think it should include some recovery codes as well (to be used in case I can't acce...
Facts In relational theory, each row in a relation is uniquely identified by a primary key. That's why some purists say that every table should have a primary key. Foreign keys usually reference a ...
SQL Server uses '1900-01-01' as a "zero-point" in DATEDIFF(dd, 0, some_date): select DATEDIFF(dd, 0, '1900-01-01') --> 0 select DATEDIFF(dd, 0, GETDATE()) --> 44066 days since the "zero-d...
In C#, I have two lists and need to mark records in the first based on the second. Here's a sample: public class Vehicle { public string Make { get; set; } public string VIN { get; set;...
Is uint8_t guaranteed to be a character type if it exists? Will using a uint8_t* to examine bytes of an object cause violation of the strict aliasing rule? Is the following legal code: #include &l...
Consider an object for which a method is invoked. Beyond certain point the method no longer accesses this at all. No read/writes of non-static members. No invocation of non-static methods. Is it ...
No, such an operation is not safe. The documentation of std::unique_lock in the standard states that it's UB for the mutex do be destroyed while the lock still has a pointer to it. However, there ...
tl;dr: Allowing beginner-level "help me diagnose this" questions will generate large volumes of duplicates if the site ever scales. We need to think about how to structure things if we want them. ...
Historically, compiling programs could take a long time. Interpreted languages did not need to be compiled. So if developers wanted to change the program, if it was interpreted they could just twea...
I have developed an Atom package which calls SyncTeX (a utility for reverse lookup for LaTeX), and then opens in Atom the file specified in the SyncTeX response. I'm developing on Linux, but now a ...
As we have set up communities here on the Codidact network we've been appointing temporary moderators. Usually some people stand out from the proposal process and early activity. Ultimately, of c...
It's a long story. Once upon a time, there were three ways to express a null pointer constant: NULL 0 ((char *) 0) This was true at least as far back as Unix V7 (1979). Maybe even further...
Use a static site generator. There are other possibilities, but they seem more complicated or worse for your use case. A static site generator takes in source data in some combination of markup fo...
It would seem that the C standard library is a collection of diverse functions that pretty much just ended up in the standard by tradition or "accident", rather than through some careful plan or ra...
How do I delete contents of a specific field, if it matches a pattern, and there is nothing else in the field? I have a several GB tsv file, and I am interested in a specific field (72). If it cont...
