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App Inventor 2 变量代码块 · App Inventor 2 中文网

...化全局变量 该块用于创建全局变量,它接受任何类型值作为参数。单击 变量名 将更改此全局变量名称,全局变量用于所有过程或事件,因此该块将独立存在。 全局变量可以在应用程序运行时更改,并且可以从应用程序...
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App Inventor 2 AsciiConversion 拓展,ASCII编码与解码,Ascii码转换 · App Inventor 2 中文网

... AsciiConversion 拓展 AsciiCode: 给出字符,返回它相应 Ascii码。 GiveCharacter: 给出 Ascii码,返回它相应字符。 Conversion: 给出 Ascii码列表,转换后返回相应文本。 « 返回首页 AsciiConversion 拓展 .aix 拓展...
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App Inventor 2 使用MIT代理组件访问令牌获取方法 · App Inventor 2 中文网

... App Inventor 2 使用MIT代理组件访问令牌获取方法 « 返回首页 获取有效“访问令牌”或“API密钥”方式 访问MIT服务器 网址: code.appinventor.mit.edu 正常情况...
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MIT已发布v2.75版本,中文网已同步升级最新版本 - App Inventor 2 中文网 -...

大概更新有: 1、添加一个绝对位置布局。 2、ListView 组件升级,大图片+描述模式,支持左右滑动。 3、地图可自定义url,支持其他厂商地图,待探索测试国内地图看是否支持。 4、修复表格布局复制粘贴bug,这个比较...
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Why don't structs support inheritance?

... "inline storage" behavior of arrays, Bad Things happen, as can be seen in C++. Consider this pseudo-C# code: struct Base { public int A; } struct Derived : Base { public int B; } void Square(Base[] values) { for (int i = 0; i < values.Length; ++i) values [i].A *= 2; } Derive...
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How can I reliably get an object's address when operator& is overloaded?

... Update: in C++11, one may use std::addressof instead of boost::addressof. Let us first copy the code from Boost, minus the compiler work around bits: template<class T> struct addr_impl_ref { T & v_; inline addr_impl_r...
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Why is enum class preferred over plain enum?

I heard a few people recommending to use enum classes in C++ because of their type safety . 9 Answers ...
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Which Boost features overlap with C++11?

I put my C++ skills on the shelf several years ago and it seems now, when I need them again, the landscape has changed. 2 A...
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Are static class variables possible in Python?

...4 >>> MyClass.i, m.i >>> (3, 4) This is different from C++ and Java, but not so different from C#, where a static member can't be accessed using a reference to an instance. See what the Python tutorial has to say on the subject of classes and class objects. @Steve Johnson has a...
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iPhone App 开发第一步:从零到真机调试HelloWorld - 更多技术 - 清泛网 - ...

...明出处! 最近才开始研究iPhone开发,由于没有Mac,采用是AMD CPU + Win7 + VMWare之后安装Mac OS X Snow Le... iCc原创,转载请注明出处! 最近才开始研究iPhone开发,由于没有Mac,采用是AMD CPU + Win7 + VMWare之后安装Mac OS X Snow Leopard,...