state

Suppose you're building a fairly large simulation in Haskell. There are many different types of entities whose attributes update as the simulation progresses. Let's say, for the sake of example, that your entities are called Monkeys, Elephants, Bears, etc.. What is your preferred method for maintaining these entities' states? The first and most obvious approach I thought of was this: mainLoop :: [Monkey] -> [Elephant] -> [Bear] -> String mainLoop monkeys elephants bears = let monkeys' = updateMonkeys monkeys elephants' = updateElephants elephants bears' = updateBears bears in if shouldExit

is it possible to create a nested views in ui router with conditions? The conditions is assigned to the user roles. For example I have two types of users: admin and user . If user is opening the setting page then ui router is adding only this view which is assign to his role. Here is example of my config code var app = angular.module('myApp', ['ui.router']); app.config(function ($stateProvider, $urlRouterProvider){ $stateProvider .state('home', { url: '/home', templateUrl: '/home.html', controller: 'homeController' }) .state('settings', { url: '/settings', data: { roles: ['admin', 'moderator',

I am building a static HTML website with angular UI router for navigation. I basically have one ui-view with multiple (10+) html templates (pages) to load into that view. All my template pages are in a directory called 'pages'. So i basically want to know if we can define just one state in the $stateProvider to assign multiple template urls dynamically instead of writing different states for each HTML template page (like mentioned below). $stateProvider .state('home', { url: '/home', templateUrl: 'pages/home.html', controller: 'homeController', controllerAs: 'home' }) .state('viz', { url: '

I am new to angular 5 and Ngrx, some how i managed to implement a login functionality, once login is success i am taking the user to dashboard. But if I refresh the page the user state seems to be lost. How to make the user state persistent even the page reloads ? How to make the user state persistent even the page reloads? as @user184994 Mentioned NGRX state is only held in memory. If you want it to persist between page refreshes Go for LocalStorage or sessionStorage localStorage and sessionStorage accomplish the exact same thing and have the same API, but with sessionStorage the data is

Here's my code: import 'package:flutter/material.dart'; void main() { runApp(new MyStatefulApp(key: App.appStateKey)); } /// Part [A]. No difference when appStateKey is defined as variable. class App { static final GlobalKey<MyAppState> appStateKey = new GlobalKey<MyAppState>(); } /// Part [B] class MyStatefulApp extends StatefulWidget { MyStatefulApp({Key key}) :super(key: key); @override MyAppState createState() => new MyAppState(); } class MyAppState extends State<MyStatefulApp> { int _counter = 0; add() { setState(() { _counter++; }); } @override Widget build(BuildContext context) { return

Newbie here so sorry if this is pretty elementary. I'm making an extension that simply has a checkbox/switch when loaded. It is to be unchecked the first time you open it but when the extension is closed and reopened, I would like it to display whether it was checked or not. The checkbox starts a timer in the background.js and unchecking it stops it. I have all this working, except to save the state of the checkbox Relevant HTML for the popup <div class="onoffswitch"> <input type="checkbox" name="onoffswitch" class="onoffswitch-checkbox" id="notification" /> <label class="onoffswitch-label"

My code works, but I have a best practice question: I have an array of objects in the state, and a user interaction will change a value of one object at a time. As far as I know, I'm not supposed to change the state directly, i should always use setState instead. If I want to avoid that with any price, I will deep clone the array by iteration, and change the clone. Then set the state to the clone. In my opinion avoiding to change the state that I will change later anyway is just decreasing my performance. Detailed version: this.state.data is an array of objects. It represents a list of topics