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What do hjust and vjust do when making a plot using ggplot?

...lot using ggplot, I spend a little while trying different values for hjust and vjust in a line like 2 Answers ...
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Which characters need to be escaped in HTML?

...d in XML. Inside of an element, this just includes the entity escape ampersand & and the element delimiter less-than and greater-than signs < >: & becomes & < becomes < > becomes > Inside of attribute values you must also escape the quote character you're ...
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How do browsers pause/change Javascript when tab or window is not active?

...st is quite CPU intensive. requestAnimationFrame is not supported by IE 9- and Opera 12-. The test logs the actual time it takes for a setInterval and requestAnimationFrame to run in different browsers, and gives you the results in the form of a distribution. You can change the number of millisecon...
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App Inventor 2 接入百度网盘API · App Inventor 2 中文网

...】 3、获取文件列表,返回JSON,拿出想要的文件的fsid 【使用Web客户端】 4、获取文件信息,返回JSON,根据fsid取出dlink 【使用Web客户端】 5、根据dlink下载 【Web客户端】 6、下载效果展示 App Inventor 2 接入...
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Why does direction of index matter in MongoDB?

... MongoDB concatenates the compound key in some way and uses it as the key in a BTree. When finding single items - The order of the nodes in the tree is irrelevant. If you are returning a range of nodes - The elements close to each other will be down the same branches of th...
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How to build an android library with Android Studio and gradle?

...lipse but nothing I have tried is working. In Eclipse I have 3 projects (2 android app projects and 1 android library project). The 2 app projects depend on the library project. When I do the gradle export I get 3 projects that don't work. I am open to restructuring the project but haven't found any...
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Is it bad practice to have a constructor function return a Promise?

I'm trying to create a constructor for a blogging platform and it has many async operations going on inside. These range from grabbing the posts from directories, parsing them, sending them through template engines, etc. ...
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How to structure a express.js application?

Is there a common convention for breaking up and modularizing the app.js file in an Express.js application? Or is it common to keep everything in a single file? ...
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Android destroying activities, killing processes

Hi I'm wondering how Android is managing memory and I can't find precise answer anywhere. Let's assume I have an application with 5 activities on current activity stack (4 are stopped and 1 is resumed), there is no service connected. I press HOME button so that all of my activities are stopped. I st...
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How do I pass a variable by reference?

...n seems unclear about whether parameters are passed by reference or value, and the following code produces the unchanged value 'Original' ...