Latest Questions

Postgres SQL Query to total column with multiple filters

I have a Postgres table that contains a date and status field. I want to create a query that will return the date, plus the total number of records and then th

DVR RTMP Stream into HLS (m3u8) in SRS

For SRS SaaS, DRV output are HLS (m3u8), mentioned at here https://github.com/ossrs/srs/issues/2856 and here: https://mp.weixin.qq.com/s/UXR5EBKZ-LnthwKN_rlIjg.

How do I open ruby file in irb?

I'm currently using AWS cloud 9. I want to run my code but when I use the ruby command to open up my ruby file in irb it sometimes works or it gives me the erro

Appsync how to use [String] inside query

I am trying to get products using specific brand names. I have set up my query as brandList : [String] and the query is as follows {

Uncaught ReferenceError. Firebase SDK not recognised despite correct order of script tags

I am trying to implement firebase authentication on my website. However, whenever I try to test the function, I get the following error: Uncaught ReferenceError

Modifying a member variable [closed]

I'm having an issue with modifying a member of a class. I overloaded the operators and I think that I am calling the member correctly to modif

I'm having trouble understanding how to get JavaScript to function as a program

This is going to sound really, really basic, but I just need a little help understanding one of the concepts I'm struggling with in Javascript. I have been read

How does Apache IoTDB delete a device?

I want to delete the device in the Apache IoTDB. But I don't know how to do it. I can't find something like delete devices command in the user guide. Apache IoT

Django Stripping Blanks In Between Words When Generating Blanks

I am working on a Hangman game using Django and I'm having some trouble generating the blanks from the words if the answer is two words, such as a first and las

Is the R function for dividing dual y(mutiple) in time-series graph?

I'm trying to plot graph that dual y according to concentration(ppm, temperature etc.) Reference data is here. Using this data, i want to make graph below. In

how can I handle the character palette hotkey in an LSUIElement application

I've implemented something like Cocoa Keyboard Shortcuts in Dialog without an Edit Menu for an LSUIElement application. In fact, to try to make sure I was not

How to call this command "docker pull testacr.azurecr.io/hello-world:v1" using .NET SDK Library

I have created Azure Container Registry and deployed sample image "hello-world", I have requirement to read the labels under the tags for hello-world image, for

How do I randomly output string to multiple labels from array without repeats

I am trying to make a basketball playoff simulator. I have an array for east conference teams and west conference teams. I want to randomly output the team name

When I try to use controlled data, schema isn't working at all

I'm working on a form with controlled components using state, but I don't understand how to allow my yup formschema working. When components are uncontrolled, i

SIFT detection / FLANN matching results in matches with way too long distance

I'm doing some feature detection/pattern matching based on the OpenCV example code shown at https://docs.opencv.org/3.4/d5/dde/tutorial_feature_description.html

Vue3 using script setup, how to access this.$router.push()

I am new to Vue3 and am struggling with some examples. I have a simple login component that should redirect to another page but isn't. Here is my template: And

chrome.tabCapture is undefined when extension icon is clicked

I am trying to use the chrome extension tabCapture API. To do this, I hooked up a simple background script that adds a click handler to the extension icon (via

Whay not jQuery .sortable is not a function?

When I am Create Drag and Droppable Datatables Using jQuery UI Sortable in Laravel Then Drag and drop not working in this code ... Create Drag and Droppable Dat

Is there a way to get a <div> in the same line of another <div>?

So I have 2 <div> tags in my body, and I want them both to be in one line. However, it automatically makes a line break. Is there a way to fix this?

Is there a way to use haveibeenpwned (HIBP) without sending email in clear text?

For legal reasons we can't send the email to HIBP in clear text. Regarding "Domain Search" functionnality, there's no API (as far as I know). It works by sendin

vaadin flow DateTimePicker returns null if only one field entered

I'm using a DateTimePicker with vaadin flow 23.0.5. The problem is that if a user only enters either the date or time (but not both), then when I save the field

Inconsistency between postgres and hibernate

Inconsistency between hibernate and postres. Consider we have table student having 2 columns id(Primary Key) and name. Perform the following concurrent query on

What is the problem in this keras input shape?

from matplotlib import units import numpy as np from tensorflow.keras.models import Sequential from tensorflow.keras.layers import Dense from tensorflow.keras

Periodically query a database and Flow the result in Android

In Android I'd like to 'poll' i.e. send GET requests to a webserver every 10secs, write the data-received into a Room Database, and Flow the database-contents t

Is there a way to add multiple conditions while doing the product in Maple?

Note: I've searched for the answer to this already but I can't find what I need. I may have overlooked something or maybe this is referred to in a different way

EF Core: Union vs LinqKit for dynamic linq to SQL

I was always using the LinqKit to implement dynamic and cooperative predicates. However, the last time I saw a colleague use the Union to combine dynamic querie

How to compare 2 two-dimensional lists in python according to a given condition?

This function compares 2 matrices element by element, compares according to the principle that the corresponding elements should have the same parity def equals

<a> element appearing inside even though I put it outside

I have django template file called card.html In this file the anchor tag is on the outside. <a class="url d-block" href="{% if content_type == 'book' %} {% u

Journey builder's custom activity: Fetch data extension data in bulk

I am new to Salesforce Marketing Cloud and journey builder. https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/creating-activities.html We ar

SwiftUI - List Line Separator Inset like iOS Settings App

I'm trying to achieve the behavior that's also seen in in the iOS Settings App or for instance the Roborock App (see screenshots below). I'd like to go for an I