Latest Questions

Is there a concept of reverse controller for WebSockets?

I am implementing a WebSocket server in a small microservice and I wonder if conceptually there is a things such as a Reverse Controller? I am using Spring Web

How to extract the largest polygon in a raster?

I can read a rastre and exrec polygones likes: If I have this code to read a raster and shapefile: library(raster) library(geojsonsf) library(sf) librar

does fixed LOD expression return row-level values?

I have difficulties to understand how we can say that fixed LOD expressions return "row-level values" (ref) Definition of row-level expressions ref: Expression

Insert an element in a descending sorted array and keep array sorted

Assuming we have a sorted descending vector, like: vector<int> array {26,  21,  13,  11,  8,  3,  2}. I would like to inser

How to Abort long running query in weblogic struct java application

I have a query some times I get timeout exception and query runs on the backend for ever not displaying any information and causes application to hang up how ca

Trying to Populate a Grid of Coordinates into a Multidimensional Array Using Nested Array Map Methods

I'm trying to populate a grid of coordinates into a multidimensional array using ES6 nested map methods using this code: var gridSize = 4; var regionA

Parsing JObject In Scala

I am using json4s for parsing a json object which gives me result like this: JObject(List((x,JArray(List(JString(x_value)))), (y,JArray(List(JString(y_value)))

How to know whether the navigation is cancelled or not?

I am navigating to a route but one of the route guard is returning false in Angular 13. how to know whether navigation is done or cancelled. I have done below b

Save changes in ms access file

$path = “C:\path\myfile.mdb” $cn = new-object -comobject ADODB.Connection $rs = new-object -comobject ADODB.Recordset Opening connection to the Dat

Can we update values in date picker field based on value in another date picker field in a Cardservice for Google Calendar Add-on?

I wish to populate the value of booking end date based on the value entered by user in the booking start date. Currently, I am using below codes - /*----------

Passing Down @Namespace using ForEach

I'm trying to pass down a namespace using ForEach, however I am getting an error that looks something like this. Multiple inserted views in matched geometry gro

How to assign a database model to a user

from django.db import models from datetime import datetime from django.contrib.auth.models import User class News(models.Model): user

Sorting and Filter Over PII Data

I have a large set of User PII data, currently, we are storing on Relational Data encrypted with AWS KMS. Now I have to paginate data based on UserName. The onl

Ingress Resource file error AKS - spec.rules[0].http.paths[0].pathType: Required value: pathType must be specified

I am following MS documentation to create ingress NGINX controller https://docs.microsoft.com/en-us/learn/modules/aks-workshop/07-deploy-ingress But below yaml

Oracle sqlplus Chinese characters garbled

I run a simple query with oracle database 11g on CentOS, but I got wrong CHARACTER SET. SQL> select col_name from table_name where rownum <= 1; col_name

Scala 3: Define a typeclass instance for an inner class

I am trying to define typeclass instances for an inner class. As a minimal example, I have code that looks like this: trait Typeclass[T] class Outer: class

streamWriter does not apply changes until I restart my game

I'm making a game in Unity with an editor level that writes the level data in a .txt My problem is that changes to the file are not applying correctly because I

How to shared color palette between multiple subplots?

I have the following figure: The figure is composed by the following code snippet: fig = plt.figure(constrained_layout=True) grid = fig.add_gridspec(2, 2) ax_

How do we optimise an incremental merge involving a very large target table (10 TB) and smaller incremental source table in a data lake environment?

I came across this question recently in one of the interviews and haven't been able to find a satisfying answer to this question. The incremental merge could co

Vue Router route query param added by beforeEnter lost after navigate into the same route

When navigating into the same route you are currently at, the route query page added by the before enter route guard is lost. This is due to the fact that route

Is there a better way to refactor this function using the Lodash library?

My goal was to take a list of blogs and find the author with the most blogs returning an object like this { author: String, blogs: Number }. I was successful, b

Is waiting for action completion in MQTT async_client necessary?

I am working on an cpp MQTT async_client utilizing the paho library. I am trying to fully understand the workings of the asynchronous client, but I am not sure

Warning: count(): Parameter must be an array or an object that implements Countable in Magento 2.4.3

protected function _saveAppliedTaxes( Address $address, $applied, $amount, $baseAmount, $rate ) { $previousl

Why does a proprety call {{hero.name}} work in a <h> but not in a <img>

In the template, the following code works normally: <h3>{{hero.name}}</h3> or even: <a routerLink="/details/{{hero.id}}">{{hero.name}}</a&

Chart JS Tooltip Currency Problem - Stacked Bar Chart

I use ChatJS and i want to add an € Symbol after every number in the Tooltip. On my most charts it works perfectly but the Stacked Bar Chart makes me probl

I am trying to connect and read data from mysql in node js and react project with clinet and server setup but

**I am trying to connect and read data from MySQL database in node js and react project with client and server setup but unable to get success, here is the code

Extract value from complex array of map type to string

I have a dataframe like below. No comp_value 1 [[ -> 10]] 2 [[ -> 35]] The schema type of column - value is. comp_value: array (nullable = tru

I have delete method that doesn't have parameter, how do I test it using rspec 3.0+

I've been struggling to find how to do this. I have some tty-prompt gem to receive inputs from user and need to do rspec testing. But here I'm showing the simpl

Why do I have to clear buffer twice for getting correct output?

I just started learning Java yesterday, and today I was learning input-taking. I got to know why we need to clear the scanner buffer before taking input using .