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云数据及Firebase组件简介 · App Inventor 2 中文网
...个设备上独立（本地）存储数据是不够的。
为了在任何连接的设备上存储应用程序所有用户的全局高分，应用程序的发明者应该将其存储在网上。 它应该被存储，以便游戏应用程序的每个副本都可以读取和写入有关高分的数据...
Base64 encoding and decoding in client-side Javascript
Are there any methods in JavaScript that could be used to encode and decode a string using base64 encoding?
13 Answers
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Command to collapse all sections of code?
In Visual Studio is there a command to collapse/expand all the sections of code in a file?
20 Answers
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Check if list of objects contain an object with a certain attribute value
I want to check if my list of objects contain an object with a certain attribute value.
1 Answer
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Concrete Javascript Regex for Accented Characters (Diacritics)
I've looked on Stack Overflow ( replacing characters.. eh , how JavaScript doesn't follow the Unicode standard concerning RegExp , etc.) and haven't really found a concrete answer to the question:
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Popup弹出菜单扩展 · App Inventor 2 中文网
...：
可以使用哪些HTML标签取决于实现。您可以找到相关提示这里或这里。
图标名称
符号文件的名称指的是资源文件，即上传到AI2项目的文件。
可以省略”.png”或”.jpg”文件扩展名。扩展会自动搜索。名...
Correct format specifier for double in printf
What is the correct format specifier for double in printf? Is it %f or is it %lf ? I believe it's %f , but I am not sure.
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How can I generate a unique ID in Python? [duplicate]
I need to generate a unique ID based on a random value.
8 Answers
8
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How do I initialize a byte array in Java?
I have to store some constant values (UUIDs) in byte array form in java, and I'm wondering what the best way to initialize those static arrays would be. This is how I'm currently doing it, but I feel like there must be a better way.
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Mean per group in a data.frame [duplicate]
I have a data.frame and I need to calculate the mean per group (i.e. per Month , below).
8 Answers
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