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I'm trying to connect to a db file in my project but having some troubles. I'm using JDK 14 with ojdbc11 however I am still getting this when trying to connect: java.lang.UnsupportedClassVersionEr...
Despite the fact that I have programmed against SQL Server for quite a while I did not pay much attention to the tempdb database. This is especially true if application logic is mostly written usin...
Background This is kind of a subquestion to How to properly use malloc? When allocating, there are basically two common ways of using the sizeof operator: int *p; p = malloc(n * sizeof *p); /...
Our team will have to migrate an old application to use a new tech stack. One of the features involves the usage of HTML editors which serialized the content as HTML and I am able to see valid HTML...
What is Backus–Naur form as applied in computer programming? From Wikipedia In computer science, Backus–Naur form (/ˌbækəs ˈnaʊər/) or Backus normal form (BNF) is a metasyntax notation for cont...
I was trying to plot using following lines in C++. #include "koolplot.h" int main() { plotdata x(-6.0, 6.0); plotdata y = sin(x) + x/5; plot(x, y); return 0; } When I was...
I define a software event as any state of a program to which we can probably respond. In JavaScript, how does event delegation differs from more simple and probably more common event handling patt...
#include<stdio.h> #include<stdlib.h> int main (void){ FILE *cfPtr; char name[15]; int ID; if ((cfPtr = fopen("draft.txt","w")) == NULL){ printf("File could n...
For my company, I'm writing naming conventions for embedded code in C language. Function names must be named in lowerCamelCase() and start with a verb. Global variables are in Maj_started_lowe...
Is -isystem/path/to/sys/includes a standard compiler option, or is it a compiler extension implemented by gcc, clang, and maybe other compilers? Can I rely on its availability? I couldn't find th...
int arr[] = {10,123,14,14,15,16}; cout<<sizeof(arr)/sizeof(arr[0]); I was reading the article. When sizeof() is used with the data types such as int, float, char… etc it simply ret...
I'm using SimpleDateFormat to parse a string containing a date/time, but the result has a different date, hour, minute, second and millisecond: SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM...
I found a form I wanted to duplicate on a roof construction website. All my input boxes are centered except the last one that's a bit off and I cannot figure out why. Here is my code: HTML <...
I'm using git for LaTeX projects and am in a little dilemma about how to best ignore files. if I add *.pdf to my .gitignore file, I keep forgetting to force add included graphics if I don...
I have two strings and want to remove every occurrence of the second string inside the first one starting from the beginning of the first string and as if each occurrence was removed immediately. ...
What's the better way to store base64 in SQLite Database? I was thinking to put base64 as TEXT since base64 has lots of chars. CREATE TABLE name (id INTEGER PRIMARY KEY AUTO_INCREMENT, image TEXT)...
I handle several projects that use yaml files for configuration, and load them with YamlDotNet. It is sometimes useful to log the effective configuration when the program starts, to aid future debu...
Hey, regarding a question on returning pointers as functions, why does my code produce this error & won't print out the sum = 6? #include<stdio.h> #include<stdlib.h> int *A...
I have noticed that lots of projects (both in real-world and within online courses) use Automapper to map domain models to view models, API models. The main advantage seems to be convenience by re...
While compiling the code for production in Tailwind CLI using: npx tailwindcss -m -o ./build/tailwind.css --purge "./**/*.html" I get: node:internal/modules/cjs/loader:941 const err = new ...
Let I have a button <button type="button" onclick = "myfunction()" class="collapsible">Expand content</button> And, I have a JS function. function collapse() { var coll = docu...
I want to ensure I understand the following code; credit to user:m3g4p0p on Sitepoint, for this code: const walker = document.createTreeWalker( document.body, NodeFilter.SHOW_TEXT ) let...
I often work bidirectional text in content management systems and often that text has parenthesis (()) or other textual wrappers flipping after an English text which is preceded in itself by some R...
I work for an IoT company. We recently got secure boot to work for a customer-visible product. For secure boot to work, the images we generate must be signed. Obviously, we want customer-visible sy...
No, I'm not trying to get the full program written completely in C by you guys. I only need some way to implement the functionalities of each function I found confusing. In this challenge in Code ...
Our team is finally focusing on writing more automatic testing and one of my ex-colleagues recommended to try out the Verify library. The tool does the following: runs the test and compares the...
One of the legacy applications my team has to maintain has almost always this pattern for dealing with data modification: try { // get the connection // begin transaction // optional...
I have seen this construct quite a lot: int *p = (int*) malloc(n * sizeof(int)); Is this how it should be? What is the proper way to use malloc? I have also seen this: int *p = malloc(n * size...
I've recently been involved with creating text documentation of steps for workflows in graphical windows systems (and web-pages). These are often somewhat wordy, for example: "Click on the 'Exit' ...
I have a Makefile in my Jenkins job's workspace, that I want to edit out certain parts from and then save it, before running next part of the script that uses this Makefile. The part that I want t...
I keep getting this error: Cause: the class org.apache.tools.ant.taskdefs.optional.ssh.SSHExec was not found. This looks like one of Ant's optional components. Action: Check that the ap...
I'm writing a JSON schema to validate asset files for a program. The JSON I need to parse is structured so: { "jobs": { "software-developer": { "job-description": "sw-dev.md:0", "pay": 800...
Consider this code: #include <stdio.h> int main(void) { static void *ptr; if(ptr == NULL) puts("It's NULL!"); } I wonder if this is guaranteed to print "It's NULL!" I know ...
Let's say I have this class: class myService { private boolean foo(T arg) { return arg == 42; } public Response bar(U arg) { if(foo(U.field)) { return Response.st...
Getting the following error only when I call a post API through Nginx [0m[31m12:48:35,903 ERROR [io.acurio.hub.api.rest.impl.DesignsResource] (default task-16) Failed to invoke workflow: com.masha...
I've heard that in modern C++, smart pointers are preferred to raw pointers for ownership (the so-called RAII principle, as I understand it). This makes sense, and since then I've always used them...
I have a list of 11-digit numbers stored in one single column in Excel, and I need to separate the digits according to this pattern: 2-2-1-3-3. Example: 00002451018 becomes 00 00 2 451 018. How c...
I was playing around with mapped tuples and came across an interesting case where TypeScript cannot infer the types used: interface Foo<A, B> { (a: A, b: B): any } function test<...
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...
#include<stdio.h> struct Node{ int data; struct Node* next; }; Here I used an asterisk after Node. What is it used for? What if I don't put any asterisk after Node (both Node...
Before I publish a new webpage in my website (in the content management system itself), I zoom in from say 100% zooming to 500% zooming and then re-read it, as a nice way to check for typos. The p...
I am trying to understand this code: const iframes = iFrameResize( [{options}], [css selector] || [iframe] ); The code can be found in this documentation. Is [{options}] an array of objects an...
There is an external program I'm calling from within my C/C++ program, by using fork() and execl(), and redirecting the stdio with dup2() to be able to read the output from the external program. I...
I have a code block like this: try { ... x.foo(); // This is the line that forces us to have the try block ... } catch (ArrayIndexOutOfBoundsException e) { logger.error(e.getM...
I am trying to listen to the event in which the keyboard key containing the Hebrew final-letter ך is pressed. This key stands for both the English letter L and the Hebrew final letter ך. If my op...
Say we have an abstract class Foo declared as so: class Foo { public: virtual void test() = 0; }; Let's say that we make a derived concrete class FooDerived, and decide to mark it's ve...
Let's consider the following code: const char a[][4] = {"aa", "aaa"}; const char *b[] = {"bb", "bbb"}; const char *const c[] = {"cc", "ccc"}; For shared libraries, both b and c arrays require...
I'm starting a small site with some online tools. Tried to include Google Adsense but I initially got rejected because the site was still on construction. Yet I've seen in the forums that they are...
#include<iostream> using namespace std; class Book{ public: string title; string author; int pages; Book(string aTitle, string aAuthor, int aPages){ aTitle = title; ...
While learning JavaScript, I started to see =, == and === operators. What's the difference between them?
