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Why do Content Delivery Networks are often developed in such a way that they would require adding a Cname value such as www. before example.com? I ask this after switching from one CDN (Cloudflare...
I am struggling to do a save button in C# Windows Form Application where I have a GridView and I want to save all modifications I do in GridView Table(I connected it to SQL). This is the data sourc...
I am fairly new to working with @ngrx pattern in Angular which is a state management pattern relying on Reactive Extensions. One of the convenient structures is @ngrx/entity which helps with manag...
A Q on Stack Overflow asks how to merge two columns where each row has only one populated cell. The example was from (on the left) to (on the right): a|b a 0| ...
I find myself often writing code like this. try { // code } catch( FailedReadException const & ex) { file.close(); std::cerr << "Read failure " << ex.readFailure() <&...
When writing Python-based apps (e.g. Django, Flask, etc.), it's often the case that import statements can be found all over the place, often more than once for the same module. For example, you can...
Let's say I have a script that needs the user to set X number of variables at the start. One can either Pass the arguments in on the command line. Start the program and then have the user input...
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...
In a stored procedure let's say I have a VARCHAR variable, DECLARE example_variable VARCHAR(100); how much memory is allocated to it and is that independent of the length of the data in the var...
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 ...
So,I'm having a doubt when I call std:async() on a member function of a class. The book I'm reading says (emphasis mine) You can also pass a pointer to a member function to async(). In that case...
Sometimes I will need to temporarily lock out other MySQL users when I am making large structure changes and want to make sure that nobody else is inputting or changing the data. The other use case...
I am trying to save my question that was deleted from "Webmasters StackExchange" for not being about "a problem in a website" which I published there anonymously ; below is a shortened, directly-in...
I'm trying to log error messages from Requests exceptions. Example: try: make_web_request() except RequestException as ex: logging.error(ex) Example output: ERROR : ('Connection abo...
I want to remove a deprecated entry from the default build.gradle file as well as change the default layout of an empty activity to use Relative Layout instead of constraint. I'm using Android Stu...
I understand that any World Wide Web interaction works this way: Stage 1: Client (human or software) ⟶ User agent ⟶ HTTP/S web-server request (with an unresolved domain) Stage 2: ISP-initiated Rou...
Master lists like 82 food subreddits and 128 tech subreddits don't indicate each's subscribers. if it's private. Sometimes moderators can make the sub private for several days, to clean i...
Through the years I have "tasted" several website hosting companies; none of them had Markdown available in their support-ticket-systems (if all any formatting method available). Why is it? What's...
I would define a hook as: A piece of code which changes the response to a certain event, without changing the original code that caused the event How is that different than "code injection", if a...
I have around 20,000 .npy files in a directory. That main directory has no subfolders:- Main_dir | |--1.npy |--2.npy |--3.npy |--........ The absolute file paths are stored ...
I just completed my first install of SQL as a server-based, Enterprise Edition. I wanted to check it out using SSMS on PC using my Admin Access. But could not connect. For security reasons my adm...
There are two broad types of build environments - in-source and out-of-source. "In-source" means the compiled files will appear in the same directory as source files. "Out-of-source" means there is...
I have a bunch of stored procedures that look like something this CREATE PROCEDURE example() BEGIN UPDATE STATEMENT A; UPDATE STATEMENT B; UPDATE STATEMENT C; END// When I run them thr...
I'm using Jenkins with a branch parameter to specify the branch to build from. Other stuff downstream needs the branch name to not have the leading "origin/" -- just "feature/blahblah" or "bugfix/1...
I can't get a response from IPv4 dig on my server but I can get one from IPv6 dig. See the below output: $ dig +short myip.opendns.com a @resolver1.opendns.com # Doesn't return anything, this used ...
In programming instead of arrowcode where one has many layers of indented if statements, you can return a result as soon as possible. So instead of, if if end if end if It looks like if ret...
I am slowly modernizing an older ASP.NET Core Web API and one of the steps involved migrating from database first to code first. Now, all schema changes and seeding is covered by migrations which ...
Based on my understanding HTTP is something client and server speak in, I mean it is like a language for a server and client to communicate(not exactly a programming language). Then how to understa...
By principle, I normally work with two different companies for establishing websites for myself: One for domain registration and domain-sole email address One for web application hosting My ...
Is it worth using the Java Platform Module System introduced in Java 9 to structure application code? Given that the Java Platform Module System introduced in Java 9 doesn't manage dependency vers...
I wish to fill an array with strings, using Bash scripting. The strings are in a file, one per line. Here is what I've tried: declare -a my_array=() while read line; do my_array+=( "$line"...
tl;dr I'd like to learn a compact, cross-compiler way of selectively suppressing compiler warnings. Consider the case where you really mean to make an exact floating-point comparison using ==, o...
When creating a code-first solution in dot net core using Visual Studio, you manipulate the database by changing model classes and migrating the changes. I can set the schema for tables that I cre...
I am looking to take a partial derivative of a sympy polynomial with respect to a symbol in the polynomial. In the sympy documentation for poly.diff(...) it gives sample code like this: from sympy ...
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...
I want to use LazyCache and UnityContainer together in an ASP.NET classic application (.NET framework 4.6.1+). Namely, to be able to inject IAppCache in various services. For ASP.NET Core and its d...
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...
Using the below graph as an example: I am trying to determine all Persons which are_sons of Persons all born in the same country. Is there an elegant way to achieve this with Cypher?
I use CentOS with Bash and I would like to download, execute and delete the executed downloaded file (running a remote/cloud script locally). I often prefer to load my own shell scripts from my ow...
I am a noob Java programmer. I want to create a simple login page with just username and password. So I have to combine Java and HTML. While googling I found that Servlets do the job but people are...
I was told by my professor/book that computer programs use two kinds of memory and that all variables get allocated either on the stack or on the heap. Is this true? How can I tell where a variable...
The Problem I have a path optimization problem that in some ways reminds me of the Traveling Salesman Problem, but differs in some key respects. I have a group of items that need to be used by a m...
I have a PHP program that does a SELECT and then updates some of the values based on an algorithm. Rather than updating one row at a time UPDATE example_table SET COLUMN_A = 1 WHERE primary_k...
I'm trying to set up a simple test project, to unit test a change I'm working on. The change is to a file inside some existing project. I've tried to set up the includes as the original has it, but...
Tldr; I don't need to parse HTML, but I need to check if user submitted input conforms to a very strict subset of HTML. Can regex be a suitable tool for this? Details I have a frontend sanitiser th...
I have to add health checks to a rather new application (Web API, not a microservice) and I and a colleague are not agreeing about what other systems I should include in the check. This application...
I need to drop all of the stored procedures from my MySQL database before I recreate them. How can I do so?
I am currently dealing with an Angular application that is being deployed using an CI orchestrator and Jenkins. Jenkins job is configured to do the following (relevant steps only): fetch source...
For use in connection with conditional formatting with alternating coloured fills in OpenOffice Calc, several years ago a user of Super User was applying this Ruby script: f = File.readlines("sha...
I personally would define "escaping" in software development in general and coding in particular as follows: Making an exception to match data which otherwise would not be allowed to be matched: I...
