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...非结构化数据高可靠性存储的问题1、问题产生背景三台TOMCAT 服务器通过负载均衡设备对外提供WEB服务。怎么保证...在没有共享存储的情况下解决非结构化数据高可靠性存储的问题
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ViewDidAppear is not called when opening app from background
I have a View Controller in which my value is 0 (label) and when I open that View Controller from another ViewController I have set viewDidAppear to set value 20 on label. It works fine but when I close my app and than again I open my app but the value doesn't change because viewDidLoad , vie...
How can I programmatically check whether a keyboard is present in iOS app?
I need to check the condition of keyboard visibility in my iOS app.
20 Answers
20
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XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serv
I'm trying to create a website that can be downloaded and run locally by launching its index file.
9 Answers
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Why does Vim save files with a ~ extension?
I've found that while using Vim on Windows Vim saves the file, a .ext.swp file that's deleted on closing the Vim window and a .ext~ file.
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How do I do an OR filter in a Django query?
I want to be able to list the items that either a user has added (they are listed as the creator) or the item has been approved.
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socket.error: [Errno 48] Address already in use
I'm trying to set up a server with python from mac terminal.
10 Answers
10
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Stop form refreshing page on submit
How would I go about preventing the page from refreshing when pressing the send button without any data in the fields?
20 A...
Browse the files created on a device by the iOS application I'm developing, on workstation?
I'm developing an IOS app that creates files on the device, e.g. with NSKeyedArchiver .
6 Answers
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What is the use of making constructor private in a class?
Why should we make the constructor private in class? As we always need the constructor to be public.
23 Answers
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