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为AppInventor2开发拓展(Extension) · App Inventor 2 中文网
...只能运行于安卓设备上，对于iOS设备需要使用swift开发iOS版本的拓展。
环境配置
安装好 Java开发环境 以及 Ant编译环境，这里以Windows为例，供参考：
安装完JDK后配置环境变量 计算机（右键）→属性→高级系统设置→...
Are custom elements valid HTML5?
...fully functional) to accomodate IE's 7 and 8.
See http://blog.svidgen.com/2012/10/building-custom-xhtml5-tags.html (my blog)
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How to restore to a different database in sql server?
... worked only with the REPLACE, RECOVERY, options in my case (SQL2012) cr. dba.stackexchange.com/questions/51489/…
– dc2009
Jan 1 '15 at 10:53
7
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常用Linux命令详解（持续更新） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...里最尾部的内容显示在屏幕上，并且不断刷新，使你看到最新的文件内容。
四、打包、压缩、解包操作
1. 将单个或多个文件、目录进行打包或解压包的tar命令
使用tar命令，可以把一大堆的文件和目录全部打包成一个文件包...
Why is there no xrange function in Python3?
...ere's how I tested:
Python 2, with xrange:
Python 2.7.3 (default, Apr 10 2012, 23:24:47) [MSC v.1500 64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> import timeit
>>> timeit.timeit("[x for x in xrange(1000000) if x%4]",number=100)
18....
Running multiple AsyncTasks at the same time — not possible?
...in what version exactly they changed that.
UPDATE:
Here is what current (2012-01-27) API says on this:
When first introduced, AsyncTasks were executed serially on a single background thread. Starting with DONUT, this was changed to a pool of threads allowing multiple tasks to operate in parall...
Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12
...//www.thegeekstuff.com/2010/08/how-to-add-swap-space/
http://cloudstory.in/2012/02/getting-the-best-out-of-amazon-ec2-micro-instances/
http://cloudstory.in/2012/02/adding-swap-space-to-amazon-ec2-linux-micro-instance-to-increase-the-performance/
http://aws.amazon.com/ec2/instance-types/
...
LR性能测试结果样例分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...这样对本次测试结果有一定的影响。
获得上述数据后，最新的测试结果记录表如表3所示。
测试项
目标值
实际值
是否通过
登录业务响应时间
<=3秒
2.298秒
Y
考...
Base64Util 拓展：支持图像框、画布、文件、文本字符串、图像精灵base64编...
...建 Apps 首页 教育 中文教育版 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 ...
list every font a user's browser can display
... to parent element if the font is missing.
* Version: 0.2 (04 Mar 2012)
* Comparing font against all the 3 generic font families ie,
* 'monospace', 'sans-serif' and 'sans'. If it doesn't match all 3
* then that font is 100% not available in the system
* Versio...