state

Saving the state of a program to allow it to be resumed

由 只谈情不闲聊 提交于 2019-11-27 04:06:12
问题 I occasionally have Python programs that take a long time to run, and that I want to be able to save the state of and resume later. Does anyone have a clever way of saving the state either every x seconds, or when the program is exiting? 回答1: Put all of your "state" data in one place and use a pickle. The pickle module implements a fundamental, but powerful algorithm for serializing and de-serializing a Python object structure. “Pickling” is the process whereby a Python object hierarchy is

android fragment onRestoreInstanceState

由 孤者浪人 提交于 2019-11-27 03:24:43
Am I missing something or do Fragment s not have a onRestoreInstanceState() method? If not, how do I go about attaining something similar? Fragments do not have an onRestoreInstanceState method. You can achieve the same result in onActivityCreated , which receives a bundle with the saved instance state (or null). Check the source code here . I know, that you have accepted answer, but you should read the official documentation about fragments , and it says (paragraph "Handling the Fragment Lifecycle"): You can retain the state of a fragment using a Bundle, in case the activity's process is

Angularjs ui-router. How to redirect to login page

由 老子叫甜甜 提交于 2019-11-27 02:58:05
I have 4 states: dashboard , dahboard.main , dashboard.minor , login . dashboard is abstract and it is a parent state for .minor and .main states. Below is my code: .state('dashboard', { url: "/dashboard", abstract: true, templateUrl: "views/dashboard.html", resolve: { auth: function ($q, authenticationSvc) { var userInfo = authenticationSvc.getUserInfo(); if (userInfo) { return $q.when(userInfo); } else { return $q.reject({ authenticated: false }); } } }, controller: "DashboardCtrl", data: { pageTitle: 'Example view' } }) .state('dashboard.main', { url: "", templateUrl: "views/main.html",

QTcpSocket state always connected, even unplugging ethernet wire

由 谁说我不能喝 提交于 2019-11-27 00:29:42
问题 I have a QTcpSocket and I am reading into a loop. Each time a full packet has been read, or there has been an error, I manually check the status of the socket inside the loop, with: while(true){ if(socket->state()==QAbstractSocket::ConnectedState){ qDebug()<<"Socket status: connected. Looking for packets..."; if(socket->waitForReadyRead(2000)){ //... } When I execute de program, once connected and the loop starts, it always prints qDebug()<<"Socket status: connected. Looking for packets..." ;

What is the best way to add a value to an array in state

由 霸气de小男生 提交于 2019-11-27 00:13:41
问题 I have an array in state, let's say this.state.arr. I want to add something to this state property, and then change some more properties. Option 1 onChange(event){ this.state.arr.push('newvalue'); ... this.setState({some:'val',arr:this.state.arr}) } Option 2 onChange(event){ var newArr = this.state.arr; ... newArr.push('newvalue'); ... this.setState({some:'val',arr:newArr}) } So.. I know this.state is supposed to be treated immutable. But is it ok to use it like in option 1 where I still set

is it possible to do 'stateless' programming in matlab / how to avoid checking data integrity?

由 独自空忆成欢 提交于 2019-11-26 23:11:26
问题 My day to day work flow is something like this: acquire raw data (~50GB) parse raw data timing-information and build raw data structure (struct / object) from timing-information (what event occurred when, in which order, in what file, what other events occurred at the same time, etc ...) load only the necessary parts of raw data into struct / object as selected from previous timing information (basically this is a way to sub-select data) for each raw data chunk, calculate / extract certain

getting error: Cannot read property state of undefined

由 不想你离开。 提交于 2019-11-26 23:05:18
import React, { Component } from "react"; import FormUpdate from "../components/formUpdate"; import { fetchClothingItem, updateClothingItem } from "../actions/crud"; export default class Update extends Component { constructor(props) { super(props); this.state = { updateClothingItem: {} }; } componentWillMount() { fetchClothingItem(this.props.match.params.postId) .then(data => { this.setState(state => { state.updateClothingItem = data; return state; }); console.log("data", data); //HERE IT IS RETURNING EXPECTED DATA console.log("this.state.updateClothingItem",this.state.updateClothingItem) })

Android save Checkbox State in ListView with Cursor Adapter

由 十年热恋 提交于 2019-11-26 22:36:02
I cant find a way to save the checkbox state when using a Cursor adapter. Everything else works fine but if i click on a checkbox it is repeated when it is recycled. Ive seen examples using array adapters but because of my lack of experience im finding it hard to translate it into using a cursor adapter. Could someone give me an example of how to go about it. Any help appreciated. private class PostImageAdapter extends CursorAdapter { private static final int s = 0; private int layout; Bitmap bm=null; private String PostNumber; TourDbAdapter mDbHelper; public PostImageAdapter (Context context,

What is the difference between Strategy design pattern and State design pattern?

由 和自甴很熟 提交于 2019-11-26 22:18:50
问题 What are the differences between the Strategy design pattern and the State design pattern? I was going through quite a few articles on the web but could not make out the difference clearly. Can someone please explain the difference in layman's terms? 回答1: Honestly, the two patterns are pretty similar in practice, and the defining difference between them tends to vary depending on who you ask. Some popular choices are: States store a reference to the context object that contains them.

How can I maintain the state of dialog box with progress all over my Angular 2 application?

由 蹲街弑〆低调 提交于 2019-11-26 22:10:55
问题 I would like to keep the state of the Md Dialog alive even I close the dialog.So that I can keep the upload status active all over the application. My plan is to store the upload response in the service to maintain the upload progress and an icon will be given in the toolbar.The dialog box reinitializes everytime. How can I maintain the state of dialog box with upload progress all over the application? app.component.ts import { Component, NgZone, Inject, EventEmitter } from '@angular/core';
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