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App Inventor 2 中文网 · 项目指南

...一名学生,升级VIP会员后,可以随时随地在线编程,遇到问题提问都能及时得到详细解答,我的App开发技能得到了极大的提升!另外,我享受到VIP学生价格优惠,非常划算! ...
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How do I obtain crash-data from my Android application?

...$indexCount = count($dirArray); sort($dirArray); print("<TABLE border=1 cellpadding=5 cellspacing=0 \n"); print("<TR><TH>Filename</TH><TH>Filetype</th><th>Filesize</TH></TR>\n"); for($index=0; $index < $indexCount; $index++) { ...
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How does Facebook Sharer select Images and other metadata when sharing my URL?

...elect an image? Yes, you just need to add multiple image meta tags in the order you want them to appear in. The user will then be presented with an image selector dialog: I specified the appropriate image meta tags. Why isn't Facebook accepting the changes? Once a url has been shared, Facebook's...
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How to get the request parameters in Symfony 2?

... Answer is correct $request->get('foo'); works for ALL bags (order is : PATH, GET, POST). Nevertheless, $request->request->get('foo'); works only for POST bag. Finally, the first one ($request->get()) is not recommended if we know where the data is (GET/POST). ...
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廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术

...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 1、问题产生背景 ...
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修改centos字符集导致桌面进不去的一系列问题 - 更多技术 - 清泛网 - 专注C...

修改centos字符集导致桌面进不去的一系列问题为了使 WINDOWS–PL SQL-LINUX–ORACLE 的字符集一致怎么修改WINDOWS下的 PL SQL 字符集请参看http: user.qzone.qq.com 587...为了使 WINDOWS –PL/SQL-LINUX –ORACLE 的字符集一致 怎么修改WINDOW...
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iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...跑到出现异常的代码中呢???异常断点就为我们解决该问题,程序就会在异常出现的那行代码终止。创建异常断点图例如下: 如下所示就创建完成了。如果碰到异常crash时,尝试使用异常断点吧。 【4.符号断点Symbolic Breakp...
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PHP: How to generate a random, unique, alphanumeric string for use in a secret link?

... and it sends you an email with a link, and you have to click that link in order to verify your account 30 Answers ...
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Lua简明教程 - 脚本技术 - 清泛IT论坛,有思想、有深度

...浮点数会慢(除非大于100,000,000,000,000),或是会有精度问题。你可以以如下的方式表示数字,0x开头的16进制和C是很像的。num = 1024 num = 3.0 num = 3.1416 num = 314.16e-2 num = 0.31416E1 num = 0xff num = 0x56复制代码 字符串你可以用单引号,也...
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What is the use of the @ symbol in PHP?

... Cool feature.. It makes the use of isset()'s unnecessary in order to avoid undefined offset errors. – W.M. Dec 17 '16 at 20:55 add a comment  ...