## Visa cancellation or revocation: spend more days in another Schengen state than in the issuing state

Good morning everyone

My wife and I applied for and obtained a Schengen tourist visa (type C) to Hungary.
We enter and leave Hungary respecting the deadlines.

When we return, we were asked to provide our passports to the consulate for the revocation or cancellation of Visa. (It was in Arabic in the document)

When we asked about the reason, the explanation was that we spent more days in another Schengen state than the days we spent in the issuing state.

What are the implications for this in terms of applying for future Schengen visas?

Note: each of us has numerous Schengen type C visas in our passports, we never violate the law or the rules. And we have never had any problems at all.

## President Trump believes that Republican Matt Gaetz of Florida is part of the Deep State, did Gaetz praise the Democrats?

Hey, if there is the so-called "Deep State", it is not exclusively made up of Democrats. Draining the swamp will reveal all the corruption and attack it. Both parties will benefit from a good cleaning. But remember that political criticism is not corruption, simply freedom of expression. Something I'm sure Trump understands very well.

I have seen many liberals exercise First Amendment rights and write some rather crude things about conservatives. That does not make them corrupt or foolish, simply ignorant and ignorant can be remedied. The first remedy would be to make them understand that they are not the only ones allowed freedom of expression in this country.

## Neural ODE hidden state recovery

As I understand it, ODE networks are a mixture of RNN (since they share weight parameters) and Resnets (since they feed the input of each layer to the input of the next layer). To be more specific, in neuronal EDOs we add a parameter t to the ODE solver layer to simulate the role of continuous depth instead of the predefined number of layers in the ANN. However, in the RNN architecture, the hidden states are separated, but it seems that in the ODE networks there is only one hidden state! So how do we maintain the state of each layer in time / depth?
In other words, it seems that we are sharing the hidden states and the weights / parameters of the layer. Therefore, neither backpropagation through layers nor retropropagation through time is possible in this architecture.
Correct me if any of my assumptions are wrong.
Thank you.

## javascript – React Hooks: use of the current state Effect without relying on it

I have encountered a situation in React where I want to execute a function `F` on a useEffect hook whenever a value `V1` of the store changes. `F` use another store value `V2`. I just wanna run `F` when `V1` changes, but to access the last value of `V2`. This means that I would not like to include `V2` in the list of dependencies for useEffect.

Below is my current solution, but I wonder if there is a more accepted way to achieve this.

``````const v1 = useSelector(state => state.v1);
const v2 = useSelector(state => state.v2);

const v2_ref = useRef(v2);
useEffect(() => {v2_ref.current = v2}, (v2));

useEffect(() => {
v1 ? doSomething(v2_ref.current) : doSomethingElse();
}, (v1));
``````

## Android: multiplatform game, save game state and resume it on another platform

I have a little doubt, first of all, this is for a personal and knowledge acquisition project.

I want to create a small game, application and multiplatform web TIC-TAC-TOE, the technology chosen for the application will be Android or Flutter and for the Angular web.

The question is that, during a game, if the user wants to change the mobile for the web, how to resume or change the game to the web application, which is the best way to save the game state and load it on the other platform. Given that the user will play only on one platform at a time, what is the best way to implement this restriction?

Is there a framework or technology that helps us to implement it in an easy way? Or it is so simple and successful at the same time that it implements all controls on both platforms and stores all the required data in the database.

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## javascript: small global state controller in React using hooks

I have been working on React for a while and decided to test my knowledge on hooks by creating a small global status manager using those hooks. This is what I came up with:

## index.js

``````import React from "react";
import ReactDOM from "react-dom";

import App from "./App";
import { GlobalStateProvider } from "./global-state";

const rootElement = document.getElementById("root");
ReactDOM.render(

,
rootElement
);
``````

## App.js

``````import React, { useEffect } from "react";
import { useGlobalState, addListener } from "./global-state";

function App() {
const { state, dispatch } = useGlobalState();
useEffect(() => addListener(state => console.log(state)), ());

return (

Value: {state.value}

);
}

export default App;
``````

## global-state.tsx

``````import React, { createContext, useReducer } from "react";

type GlobalStateType = {
value: number;
};

type GlobalStateProviderType = {
state: GlobalStateType,
dispatch: (action: Action) => void;
}

type StateListener = (state: GlobalStateType) => void;

type SetValue = { type: "SET_VALUE", value: number };
type ResetValue = { type: "RESET_VALUE" };
type Action = SetValue | ResetValue;

const INITIAL_STATE: GlobalStateType = {
value: 0
};

const GlobalStateContext = createContext(null);
const listeners: StateListener() = ();

function GlobalStateProvider({ children }) {
function reducer(state: GlobalStateType, action: Action): GlobalStateType {
let newState: GlobalStateType = null;
switch (action.type) {
case "SET_VALUE":
newState = { ...state, value: action.value };
break;
case "RESET_VALUE":
newState = { ...state, value: INITIAL_STATE.value };
break;
default:
return state;
}
listeners.forEach(l => l(newState));
return newState;
}

const (state, dispatch) = useReducer(reducer, INITIAL_STATE);
return (

{children}

);
}

listeners.push(listener);
return () => {
// Must calculate here, can't use return value from 'push'
const idx = listeners.indexOf(listener);
if (idx >= 0) listeners.splice(idx, 1);
};
}

function useGlobalState() {
return useContext(GlobalStateContext);
}

export {
GlobalStateProvider,
GlobalStateContext,
GlobalStateProviderType,
useGlobalState
};
``````

Here is a CodeSandbox link. `index.js` Y `App.js` they are only here to try `global-state.tsx` so there is no need to review them (unless you wish, of course).

## algebraic geometry ag: state of the salmon conjecture

The theoretical set version of the Salmon Conjecture (that is, find the equations that cut the fourth secant variety of the Segre inlay from $$mathbb P ^ 3 times mathbb P ^ 3 times mathbb P ^ 3$$ set-theoretically) has been resolved by S. Friedland at https://arxiv.org/abs/1104.1776

In view of this, I wonder if solving the theoretical version of the Salmon conjecture scheme (that is, finding the defining ideal of the previous variety) 1) is much more difficult / needs new ideas compared to the theoretical set solution and 2) it carries more information for the biological applications that motivated the conjecture than the set theory version.

In addition, the problem of finding the ideals of other secant varieties of Segre inlays 1) is expected to be solved in the near future and 2) relevant for biological or other applications? What are some treatable / interesting problems here?

## Unity Mecanim: How do you configure the default state of the input node in a substation machine?

With Mecanim in Unity, it is possible to set the default state for a state machine by right-clicking on a state and selecting `Set as Layer Default State`. However, within a substation machine, how do you set the default state transition from the input node of that substation machine?