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Detect the Internet connection is offline?

... requests. The standard approach is to retry the request a few times. If it doesn't go through, alert the user to check the connection, and fail gracefully. Sidenote: To put the entire application in an "offline" state may lead to a lot of error-prone work of handling state.. wireless connections...
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How can I pass data from Flask to JavaScript in a template?

... am using the Google Maps API in the JS, specifically, so I'd like to pass it a list of tuples with the long/lat information. I know that render_template will pass these variables to the view so they can be used in HTML, but how could I pass them to JavaScript in the template? ...
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How to set button click effect in Android?

...e button. So for example if you create a new xml file called "button.xml" with the following code: <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_focused="true" android:state_pressed="false" android:drawable="@drawable/YOURIMAGE" /> &lt...
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How do I remedy “The breakpoint will not currently be hit. No symbols have been loaded for this docu

A C# desktop application on the express edition worked, but then it didn't work 5 seconds later. 112 Answers ...
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Remove white space below image [duplicate]

...Firefox only my video thumbnails are displaying mysterious 2-3 pixels of white space between the bottom of my image and its border (see below). ...
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Returning JSON from a PHP Script

... While you're usually fine without it, you can and should set the Content-Type header: <?php $data = /** whatever you're serializing **/; header('Content-Type: application/json'); echo json_encode($data); If I'm not using a particular framework, I u...
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Is it possible to disable the network in iOS Simulator?

... debug some inconsistent behaviour I am seeing in an application that gets its primary data from the internet. I don't see the issues in the simulator, just on the device, so I'd like to reproduce the network and connectivity environment in the simulator. ...
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What is the Sign Off feature in Git for?

What's the point of the Sign Off feature in Git ? 4 Answers 4 ...
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Delete commits from a branch in Git

I would like to know how to delete a commit. 31 Answers 31 ...
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Getting root permissions on a file inside of vi? [closed]

Often while editing config files, I'll open one with vi and then when I go to save it realize that I didn't type 10 Answers...