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Why not use tables for layout in HTML? [closed]
...rements.
Another thing. Table layout makes automated parsing of websites (screen scraping) much harder. This might sound trivial because, after all, who does it? I was surprised myself. Screen scraping can help a lot if the service in question doesn't offer a WebService alternative to access its da...
select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...很多时也很大
（3）select支持的文件描述符数量太小了，默认是1024
2 poll实现
poll的实现和select非常相似，只是描述fd集合的方式不同，poll使用pollfd结构而不是select的fd_set结构，其他的都差不多。
关于select和poll的实现分析，可...
开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...便用户灵活管理客户端的连接与访问。数据集成Mosquitto 默认通过 MQTT 客户端消息订阅方式实现外部系统对数据的消费。此外，Mosquitto 提供了多个 Mosquitto 之间的数据桥接能力，可以用于多个 broker 之间的分布式部署与数据打通。...
Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...步
填入刚才设置的密码后点击确定
默认40% 不变
进程调到1200
根据需要设置
后点击下一步
下一步
点击完成
点击确定 开始创建数据库
数据库创建完成。
验证服务
[or...
How do I disable orientation change on Android?
... that I just would like to use in portrait mode, so I have defined
android:screenOrientation="portrait" in the manifest XML. This works OK for the HTC Magic phone (and prevents orientation changes on other phones as well).
...
How to use UIScrollView in Storyboard
..., I've found a very easy way to put contents into scrollviews that are 'offscreen'. Tested with XCode 5 & iOS 7. You can do this almost entirely in Storyboard, using 2 small tricks/workarounds :
Drag a viewcontroller onto your storyboard.
Drag a scrollView on this viewController, for the demo ...
Explaining difference between automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars
...
Starting in iOS7, the view controllers use full-screen layout by default. At the same time, you have more control over how it lays out its views, and that's done with those properties:
edgesForExtendedLayout
Basically, with this property you set which sides of your view ...
Android: Tabs at the BOTTOM
...inite.
Is there a way to put the tabs in a TabWidget to the bottom of the screen?
If so, how?
10 Answers
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How to get the mouse position without events (without moving the mouse)?
... Tim Down suggested - but instead of having elements for each pixel on the screen, create just 2-4 elements (boxes), and change their location, width, height dynamically to divide the yet possible locations on screen by 2-4 recursively, thus finding the mouse real location quickly.
For example - fi...
iPad Web App: Detect Virtual Keyboard Using JavaScript in Safari?
... HTML, CSS and JavaScript). Since the keyboard fills up a huge part of the screen, it would make sense to change the app's layout to fit the remaining space when the keyboard is shown. However, I have found no way to detect when or whether the keyboard is shown.
...