persistent-storage | 易学教程

How do I take integer keys in shelve?

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问题 I want to store an integer key in shelve. But when I try to store integer key in shelve it give me an error Traceback (most recent call last): File "./write.py", line 12, in data[id] = {"Id": id, "Name": name} File "/usr/lib/python2.5/shelve.py", line 124, in __setitem__ self.dict[key] = f.getvalue() File "/usr/lib/python2.5/bsddb/__init__.py", line 230, in __setitem__ _DeadlockWrap(wrapF) # self.db[key] = value File "/usr/lib/python2.5/bsddb/dbutils.py", line 62, in DeadlockWrap return

How can I store an ArrayList<HashMap<String, String>> in SharedPreferences?

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问题 I wish to store an ArrayList which contains Hashmap inside SharedPreferences. How can I do this? 回答1: You can convert your collection into a json and store it in shared preference. Whenever you need to get the data, just get the string and convert the JSON back into your collection. //converting the collection into a JSON JSONArray result= new JSONArray(collection); SharedPreferences pref = getApplicationContext().getSharedPreferences(PREF_NAME, 0); //Storing the string in pref file

persist value between two pages using javascript [duplicate]

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问题 This question already has answers here : Persist variables between page loads (4 answers) Closed 4 years ago . i have a one html page in which i am storing few user selected values now and want to use these values on another html page. i am using jquery in my module and i have already tried window.name and window.localStorage but they don't persist values between two pages. so please help me to solve this problem. 回答1: If you don't want a cookies--and if you're directing from the first page

How to persist a NSMutableArray

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问题 I'm absolutely new to iOS Dev. I started out with the really helpful tutorial on Apple dev website So i made the simple To-Do List application, as per instructions. The App: It's a simple to-do list. It has a view, with a single text-field, which takes in an input, which then appends that input to the table-list view. the table list view is my "TO-Do List" which is generated from a NSMutableArray. The Problem: Whenever i quit and relaunch the application, my List disappears. The Question: I

Volume mount when setting up Wordpress with docker

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问题 Quickstart: Compose and WordPress proposes the following docker-compose.yml version: '3.3' services: db: image: mysql:5.7 volumes: - dbdata:/var/lib/mysql restart: always environment: MYSQL_ROOT_PASSWORD: somewordpress MYSQL_DATABASE: wordpress MYSQL_USER: wordpress MYSQL_PASSWORD: wordpress wordpress: depends_on: - db image: wordpress:latest ports: - "8000:80" restart: always environment: WORDPRESS_DB_HOST: db:3306 WORDPRESS_DB_USER: wordpress WORDPRESS_DB_PASSWORD: wordpress volumes: dbdata

using nfs network path as a kubernetes persistence volume

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问题 I have setup a kubernetes cluster with three nodes. All nodes are Linux centos machines. I need persistent volume to store data and I am trying to achive this. I was following this tutorial. But it only covers a one node cluster. https://kubernetes.io/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/ Since, my cluster consist of three node, I could not use local path. Previous tutorial does not worked for me. I need a network path and using NFS seems a reasonable solution

Portable Settings and App Data Storage, In Python?

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问题 What is a portable way to store settings and generated app data for locally-run (desktop) python programs? Is there some pythonic right-way or a widely used 3rd party module? Ideally I want some portable way to tie into OS X's defaults system and Windows' System.Configuration system. I'd settle for a way to get the right path to store persistent settings data for the user's OS. I know about the various relevant technologies like sqlite/pickle/ConfigParser/json/shelve/dbm, but I haven't found

AngularJS view not reflecting $scope.model, though data is being set

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问题 Thank you so much for reading my question :) Aim: I want to persist a logged-in user's name and photo if they open a new tab or refresh. When originally authenticating (calling attempt.login on the form submit), the view updates fine (like so:) userController.js.coffee: $scope.attemptLogin = -> $scope.showLoginForm = false $http.post(apiURL + "/login" email: $scope.credentials.email password: $scope.credentials.password ).success (data) -> if data.error console.log "error: " + data.error else

Alternative to Windows Azure tables out of the cloud

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I'm developing a .NET app, which needs to run both on Azure and on regular Windows Servers(2003). It needs to store a few GB of data and SQL Azure is too expensive for me, so I'll use Azure tables in the cloud version. Can you recommend a storage solution, which will run on standalone servers and have an API and behavior similar to Azure tables? From what I've seen Server AppFabric does not include Tables. If you think what Windows Azure Table Storage is, it is a Key-Value pair based non-relational databse which is accessible through REST API. Please download this document about Windows Azure

Using NSUserDefaults to store many values will cause problems?

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问题 I have created an application which will login using username, password and allows the user to download the files from serve. In my application I have to persist few datas once the user have login in the application. Persisting data like Username, Password, user downloaded list , subscribed plans,etc. The data can be persisted in application either by NSUserDefaults,Plist , etc. But I feel easy to store and retrieve the values using NSUserDefaults. As I need to use the values in many view