applications – Some apps only work on wifi

I have a few apps on my phone that for some reason only work on wifi. It is an email client and a public transportation app.
I tried reinstalling the apps, clear cache and data, clear cache and data on Google Play Services, resetting network settings but nothing seems to work. Is there any way I can make them work on mobile data as well?

c# – How to create a modular system of multiple .NET Core applications extending a single application?

So first of all let me explain what I want to achieve:

I want to create a basic .NET Core console application which is responsible for loading external extensions (more on this later on), listening for events, connection handling etc.

Let’s assume this application is a Discord bot or Amazon’s Alexa. It is responsible for starting, shutting down, connecting and so on.

But you want to provide a system to extend this basic application with a plug n play system. So instead of extending the core repository you would create another repository with a .NET Core library which provides a new feature/command/skill.

At the end you would have a core application in one repository and multiple repositories extending the core application.

How to develop this?

Let’s assume

  • Developer A creates the core application in a repository myApp.core
  • Developer B wants to create a “Hello World” command in a separate repository myApp.extensions.hello-world
  • Developer C wants to create a “Ping” command in a separate repository

Developer A could work on the application it’s easy to test locally.

Developers B and C create libraries for their features. To get their libraries loaded into the application Developer A loads all DLL files from a specific directory “Extensions” during startup.

But how could Developers B and C test their new features if they want to debug the libraries in their IDEs? They can’t run that library so they have to test that library by running the core application.

Things might get tricky if developer A is an employee and developer B and C are just customers creating their own commands but don’t have access to the core application.

So how would developers B and C debug their libraries locally then? Are there any better approaches for this? Maybe Docker helps out?

How do search engines deal with AngularJS applications?

I see two issues with AngularJS application regarding search engines and SEO:

1] What happens with custom tags? Do search engines ignore … | Read the rest of

web applications – SPA browser-based routing: external routing table for both frontend (React) and backend (Go) use

I have a Single Page Application that uses React-Router and is served via Go backend. The pre-built static app is accessible at which then uses to load dynamic data.

If a user goes to and clicks the /widget link everything works fine. However, because the routes all use browser-based routing, if a user tries to go directly to the Go backend doesn’t have anything to serve since it knows nothing about the app itself and gives a 404 response. It only knows/cares about the static files to serve and the api.

My simple solution is that the server sets a cookie redirect=/widget for any route that should be there and then redirects to the index route where the app checks for a redirect value and sends to the user to that page if it’s present. Circular but works.

The issue with this approach is that I don’t want to manually add each new route the app uses to both the frontend and backend which leads me to this question.

My thought is to save all of the routes externally in a yaml or json file like:

  - url: "/"
    component: App
    redirect: false

  - url: "/widget"
    component: Widget
    redirect: true

The frontend app would import the file during the build and setup the routes/components accordingly while the backend would import it, check which had redirect set to true, and use a factory function to create handlers for redirection to each of those paths. A couple potential benefits seem like they would be easier configuration of the app routes at high-level and the ability to separate which widgets are accessible directly and which need to go through the main page/login but I feel like there may be negatives I’m not thinking of

General thoughts on this approach? I’ve tried searching for other similar solutions or best practices but feel like I’m missing the right terminology to even find anything and can’t tell if I’m reinventing the wheel

applications – How to drive Philips Hue lighting with NFC tags

Recently I came to use my NFC tags again.

Wondering how I can use my NFC tags to automatize chores like:

  • Turn light on at noon (Alexa/Philips Hue)
  • Turn light off at midnight

I could not find any way to do this using the standard apps (NFC Tools / Trigger). I am not bound to specific app solution.

I tried to use text-to-speech to verbalize Alexa commands with NFC Tools, but this faild since it seem a synthetic voice is not recognized.

applications – Looking for an horizontal slider library for Android

I’m creating a native app based on a web app I wrote some time ago.

In the web app I used a library called Swiper.js, it allows you to scroll through items in a horizontal slider, the feature I’m looking for is this (it scrolls the items but not like a “free” way a recycler view or list view does it, it locks the images without cutting them off the screen).

Is there an android library that can do that? I’ve searched a lot and cant seem to find one (I really don’t want to implement it)

linear algebra – Are there any applications of the Algebraic Polar Decomposition?

One of the decompositions mentioned in the Wikipedia page on matrix decompositions is the Algebraic Polar Decomposition. This factors a square complex matrix $M$ into $M = SQ$ where $S = S^T$ and $QQ^T = I$. This is similar to the usual polar decomposition, except that in the usual case $S = overline S^T$ and $Qoverline Q^T = I$.

In a 1990 paper by Kaplansky, it is shown that this decomposition exists if and only if $M^T M$ is similar to $M M^T$, and in particular this is true for all invertible matrices.

Does this decomposition have any known applications? I guess an obstacle to applications is that the complex orthogonal matrices don’t form a compact space.

applications – I try to learn android development and whenever i wanna make project for my lessons i received this error for gradle

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applications – Creating universal apk form multiple apks without having *.aab (Android App Bundle) file

My doubt is related to android apps whose developers push their app to the playstore in the Android App Bundle format (i.e, *.aab file)

Consider a scenario I installed an app from the playstore to my Android smartphone and then, when I fetched the apk to my PC using the adb pull command, I found there is one base apk and there are some split apk. Below is the image of the scenario which I am referring to.

enter image description here

Now, is it possible that I can generate a universal apk from these apks(base and split apks) (without having the equivalent *.aab file) so that I will be able to install the same universal apk to my smartphone?

Any help/references w.r.t this topic will be highly appreciated.

applications – Notifications in android studio

I have a question..
I want to display notification at a particular time in background service.. in my app..
E.x. if date is 22 Nov & time is 12 then notification “hi” should be displayed again if time is 1 then also same like that..
How can I do that?
Any idea??