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From the further details you added, it does indeed sound like you have some stale connection state on your system. The fact that you can get DNS replies when you query a DNS server by IPv4 address,...
Say I want to implement a very basic group chat application. I use the H2 database, a user class, a controller, and a text file in the Resources folder that stores the chat texts. All texts would b...
Now of course this will directly work only within my network. But if I upload this project to Heroku or something similar, would it still work as intended? I'll assume that you actually have the ...
An as yet unanswered OpenOffice Calc - Highlighting the higest value in multiple columns posted by Rui on Super User from early this year asked whether a condition was possible to: fill with a c...
A Q on Stack Exchange from a very long time ago included: I have first names in one column and second names in another, I want to create a third column that contains the first character from the...
In order to assign a variable to the global environment from within a function, there are two ways to proceed: either using the assign operator <<- or using assign(). <<- comes with the...
p.s. I'm not sure whether the criticism applies only to generic repositories or not. This applies to generic repositories as most of their operations (e.g. get entity by id, update the entity,...
One way to go is probably to use some kind of transaction scope to include everything (SELECT from order and INSERT into shipment) with a high enough transaction isolation (e.g. SERIALIZABLE for SQ...
I want to dye all label asterisks Red with vanilla JavaScript. CSS isn't good for this because it would dye both asterisks and colons (:) instead just the asterisks: .labelWithColonAndAsterisk:af...
A login page is but the tip of the iceberg. For a login page to function, you need a way to store users and their passwords, verify passwords in a safe way, prevent the login form from being bypass...
I am styling a simple HTML-PHP-CSS contact form and I have considered to give some min-height pixel value CSS style to the form's submit button. I ran a Google search with the query: min-height...
I'm used to working in Python, but my current project is in C#/.NET and uses log4net for logging. Out of the box, log4net uses an XML file for configuration. I dislike XML and want to use something...
For my purposes, it is secure enough to use passwords to execute MySQL commands on the command line, what I would like to do is disable the warning that says, mysql: [Warning] Using a password on ...
I was discussing this problem again with some coworkers, and one of them said "QA has that problem too -- here's what we're doing about it". At its core, having everybody add lots of tests to the ...
There are multiple ways to do this. Just picked two that I find more usable (not very insecure or hard to do). Use a configuration file to store the credentials mysql --defaults-extra-file=/f...
I have recently contributed to a Clean Code project and had a discussion about how to implement unit tests. The project author argues for using an in-memory database (which easily replaces the rea...
I have decided to convert a legacy database-first ASP.NET Core project to code-first. However, I have noticed that the project used the same database as another bigger project and the Entity Framew...
The problem is that you have to write code for the test doubles and its behavior. In the author's eyes that is just unnecessary complexity because the required behavior is already provided by the f...
I have line-based data on the form x1=y2; a3=b4; c5=d6; ... Matching this with a extended regular expression is fairly straightforward; for example, one can do something not entirely dissimilar...
Can that even be done without having to repeat either or resorting to more advanced processing than pure regular expressions I don't think it can. If you don't want to repeat x1=y2 and c5=d6, you...
Yesterday I answered this question. This morning, when I visited site, the question has disappeared, so my guess is that it was deleted. But now I saw that it was undeleted (I initially thought t...
I've tried to post a comment in this question, and when I clicked in "Post" button, I've got this error message: 500 Internal Server Error If you are the administrator of this website, then ple...
Perl modules sometimes have different implementations. The ::PP suffix means it's a "Pure Perl" implementation, where portability is the goal. The ::XS suffix is for the C-based implementation, whe...
This was a tricky one to diagnose, but it's fixed now. Thanks for the report.
ghost-in-the-zsh provided a direct answer and I will try to offer a more general complementary one. One possible thing to try is a trigger that checks the integrity, but it cannot work for insert...
