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Posts by Estela
Is it correct to destroy a mutex which is referenced but not owned by an unique_lock as in this code? { std::unique_ptr<std::mutex> mutex = std::make_unique<std::mutex>(); std::u...
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 ...
I have a post where I mention a script named dead.sh Ok... now I have two posts like that. But that is not a website. It is a filename, and not one reachable through an URL. How can I inhibit aut...
For debugging running programs I often use whatever is integrated with the IDE I am using. QtDeveloper right now, but also used Eclipse, Netbeans and others. Most of them just use gdb under the hoo...
I find myself often writing code like this. try { // code } catch( FailedReadException const & ex) { file.close(); std::cerr << "Read failure " << ex.readFailure() <&...
On 25th October 2020 in Europe/Berlin clocks where set back from 03:00 AM to 02:00 AM to change from summer time (CEDT) to winter time (CET). Which means there is a 1 hour separation between 02:30...
Yes, it is safe unless the variable is volatile. The term used in the C99 standard for the value of an "uninitialized" variable is indeterminate. From C99 standard: Section 6.2.4 Storage duratio...
Let's consider the following git graph. The initial commit is 1. The colors identify the authors of each commit. Orange has left the project. Green, Blue and Pink are still active. cha...
Is there any guarantee regarding initialization of static and thread_local objects? In example, is there any guarantee about the value printed by the following program? #include<iostream> s...
I prefer the current way. Regarding tooltips Experience shows that tooltips can survive a lot of time being obsolete. In SO in meta they have "This answer is useful" and "This answer is not usefu...
In order to test that coredumps are generated and that they contain useful information which can be retreived with gdb I need to generate a SIGSEGV. Or anything else which causes a coredump. The co...
I have to debug an error which seems to only happen with some set of data present in our PostgreSQL database. I'd like to copy said database to my local machine so I can perform tests without affe...
On the server I dumped to a file using these commands user@server:~$ sudo -i -u postgres postgres@server:~$ pg_dump databasename > dumpfile Then I copied dumpfile to my machine and executed...
The documentation for requests.RequestException requests.exceptions This module contains the set of Requests' exceptions. from urllib3.exceptions import HTTPError as BaseHTTPError class...
I have not managed to make an answer with standard SQL. I've had to resort to using arrays. And I don't have a Microsoft SQL Server RDBMS at hand. So I've done it instead in PostgreSQL. You'll just...
Is it undefined behaviour to cast an uninitialized variable to (void)? Example: int main() { int x; (void)x; return 0; }
Proposal: Can Include A link to a chat room related to the question or answer. Even if tangentially. I've always found SO to be too dry. Sure, pleasantries are as helpful in a question o...
Yes, that particular post should be marked as abusive and the code replaced by. if(a==b){ print("We have a problem, a is equal to b") } Assuming that indeed the code is dealing with a sit...
