state

Stateful processing in Beam - is state shared across window panes?

由 让人想犯罪 __ 提交于 2019-12-21 22:07:28
问题 Apache Beam has recently introduced state cells, through StateSpec and the @StateId annotation, with partial support in Apache Flink and Google Cloud Dataflow. My question is about state garbage collection, in the case where a stateful DoFn is used on a windowed stream. Typically, state is removed (garbage collected) by the runner when the window expires (i.e. the watermark passes the end of the window). However, consider the case where window panes are triggered early, and the fired panes

Ionic template content not showing

由 别来无恙 提交于 2019-12-21 20:15:24
问题 I've made a basic menu navigation with Ionic using ion-side-menus and an Angular state mechanism as described at http://joelhooks.com/blog/2013/07/22/the-basics-of-using-ui-router-with-angularjs/ but no content is showing up in the center section of the page when home is loaded or any of the menu's items are clicked. Here's the simplified HTML ... <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width

How to extend states from multiple classes

由 心不动则不痛 提交于 2019-12-21 17:51:00
问题 (Please note: knowledge of the trading card game Magic: The Gathering will be a plus here. Sorry, I don't know how to put it any easier.) I have hit upon a problem using Java , which I'll describe as follows... I have a fundamental class called Card with all the following attributes: public class Card{ String Name; String RulesText; String FlavorText; String Cost; int ConvertedCost; String Rarity; int Number; } The Permanent class extends Card, and is extended in turn by the classes Creature,

React Native: Force reload of TabBarIOS.item

由 限于喜欢 提交于 2019-12-21 17:27:30
问题 I have a TabBar based app in React Native. Multiple tabs use the same datasource (AsyncStorage). If I'm now updating the data in one tab and open the other one, the old data is displayed. I can't figure out, how to force a reload every time the item become active. FavoritesView: display saved data ExploreView: Manipulate saved data FavoritesView: expired data gets displayed (--> force reload) <TabBarIOS.Item title="Explore" icon={{uri:'ic_explore'}} selected={this.state.selectedTab ===

WCF ChannelFactory State Property

由 我的未来我决定 提交于 2019-12-21 09:18:08
问题 What does it mean for a ChannelFactory to have a State property? I understand that a created channel can have connection based states. But am confused as to why the ChannelFactory also has such connection states. Does it too connect to the WCF service? 回答1: A ChannelFactory object has a State because it is a CommunicationObject , and all CommunicationObjects in WCF have a State . Of course, that's just begging the question, and not really helpful. The real question boils down to two parts Why

React is sending old state to its parent

由 痞子三分冷 提交于 2019-12-21 05:26:15
问题 When I'm sending state of the child component to its parent component, React is sending old state to the parent component. I want to send the updated state on every click on ListItem which is properly working and calling the function handleItemClick. But when I'm calling sendStateToParent . It is passing old state of it. Suppose I have clicked on ITEM1 , it is sending empty array [] . Next I have clicked on ITEM2 , it is sending array [ITEM1] . Here I'm actually creating a multiselect

Android GPS on or off state

由 梦想的初衷 提交于 2019-12-21 04:37:19
问题 Is there any way to check if the Android GPS is on or off without any permission, just the state I don't need to toggle it. Thanks 回答1: No. Checking GPS Status on Android requires android.permission.ACCESS_FINE_LOCATION The code to check the status of GPS LocationManager manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE ); boolean statusOfGPS = manager.isProviderEnabled(LocationManager.GPS_PROVIDER); 回答2: steps - Create services running in backgroud You require following

How do I generate a random number using functional state?

由 和自甴很熟 提交于 2019-12-21 04:11:47
问题 I'm struggling to figure out how to merge a functional representation of State with Scala's Random class to generate random integers. I'm studying from the book Functional Programming in Scala , and so most of the code is taken from there. Here's what the State class looks like, directly from the book: case class State[S, +A](run: S => (A, S)) And here's what I want to do: object State { type Rand[A] = State[A, Random] // the Random from scala.util.Random def nextIntInRange(from: Int, to: Int

Scala: collecting updates/changes of immutable state

由 人盡茶涼 提交于 2019-12-20 17:31:31
问题 I'm currently trying to apply a more functional programming style to a project involving low-level (LWJGL-based) GUI development. Obviously, in such a case it is necessary to carry around a lot of state, which is mutable in the current version. My goal is to eventually have a completely immutable state, in order to avoid state changes as side effect. I studied scalaz's lenses and state monads for awhile, but my main concern remains: All these techniques rely on copy-on-write. Since my state

Clojure namespace management - Is there a way to save and restore the state of clojure repl namespaces, imports etc.?

由 泄露秘密 提交于 2019-12-20 10:39:40
问题 Clojure has a large number functions/macros for working with namespaces and java package imports. To my (limited) understanding the set up of namespaces can be considered state in a clojure process (repl). When working iteratively at a REPL session, especially when source files are (re)-loaded, I can find it easy to get confused - often when I make a mistake or syntax error in namespace configuration. Other times I want to try out refactoring namespaces/aliases/reference filters but can't
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