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oracle:完整剖析PL/SQL DEVELOPER与SQL PLUS字符集设置 - 数据库(内核) - ...

...改 2、http://space.itpub.net/519536/viewspace-626952 论oracle字符码过程 3、http://www.itpub.net/838447,1.html 搞懂oracle字符集 本人也是在他们基础上发现了问题并做了补充实验 一、如果您使用PL/SQL DEVELOPER(版本不限) 1、影响PL/SQL DEV...
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C#泛型(List)中基类和子类 怎么换? - 更多技术 - 清泛网 - 专注C/C++及内核技术

C#泛型(List)中基类和子类 怎么换?List<ChildClass> childList = ...Foo(List<BaseClass> baseList);需求:把子类列表传入函数Foo,Foo支持所有子类列表。方法一:Foo(ch...List<ChildClass> childList = ... Foo(List<BaseClass> baseList); 需求:把子类列表传入...
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C#泛型(List)中基类和子类 怎么换? - .NET(C#) - 清泛IT论坛,有思想、有深度

... Foo(childList.Select(p =&gt; p as BaseClass).ToList()) 上述 Select 换是双向的,基类子类也没问题。 方法二: List&lt;BaseClass&gt; baseList = new List&lt;BaseClass&gt;(); baseList.AddRange(childList); Foo(baseList); 这种方式是单向的,只能子类基...
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【未发布】【第五课】基础组件用法(录播课) - App Inventor 2 中文网 - ...

...一遍 5、布局 -------------------- 多媒体&nbsp; &nbsp;语言文字、文字语言 地图 图表 -------------- 传感器 ---------------------------------------------------------------- &lt;iframe src=&quot;//player.bilibili.com/player.html?aid=652531626&amp;bvid=BV...
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App Inventor 2 语音识别及文本朗读组件的使用 - App Inventor 2 中文网 - ...

...经过测试,在“系统设置” — “语言和输入”—“文本语音” 中将首选引擎设置为讯飞后,朗读出来的内容完全就是杂乱的,不知是不是因为版本过旧,还是其他设置问题,经过一系列尝试(包括设置文本朗读器的国家及语...
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AppInventor2 文本和数字如何换? - App应用开发 - 清泛IT社区,为创新赋能!

Q:AppInventor2 文本和数字如何换? A:先来一个文本数字的情况: 定义一个变量赋初值 数字0,然后将文本设置给它,事实证明这时它自动变成了文本类型,而不再是数字。因此此方案行不通。 最彻底的方案: [hide] 直...
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LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...出函数 输入和输出函数可以把模型和外部数据比如文本文件、数据库和电子表格等连接起来。 1.@file函数 该函数用从外部文件中输入数据,可以放在模型中任何地方。该函数的语法格式为@file(&rsquo;filename&rsquo;)。这里filena...
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How to copy files from 'assets' folder to sdcard?

...ages, sounds and webkit Added way to deal with large files: Add extension .mp3 to the file in the assets folder in your project and during copy the target file will be without the .mp3 extension Here is the code (I left the Log statements but you can drop them now): final static String TARGET_BAS...
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When to use Amazon Cloudfront or S3

... the site on your server. Cloudfront then caches the files such as images, mp3 or video using its content delivery network. This saves you having to duplicate your assets as you would when you use Amazon S3. However, after a file expires, CloudFront will fetch it again from your live site (at cos...
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Worth switching to zsh for casual use? [closed]

... Switch to zsh. You will have access to: zmv: You can do: zmv '(*).mp3' '$1.wma' for thousands of files. zcalc: Extremely comfortable calculator, better than bc. zparseopts: One-liner for parsing arbitrary complex options given to your script. autopushd: You can always do popd after cd to ch...