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Why CancellationToken is separate from CancellationTokenSource?

I'm looking for a rationale of why .NET CancellationToken struct was introduced in addition to CancellationTokenSource class. I understand how the API is to be used, but want to also understand why it is designed that way. ...
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How to show the loading indicator in the top status bar

I have noticed that some apps like Safari and Mail show a loading indicator in the status bar (the bar at the very top of the phone) when they are accessing the network. Is there a way to do the same thing in SDK apps, or is this an Apple only thing? ...
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Slide right to left?

... edited Oct 19 '15 at 14:55 mark.monteiro 1,66122 gold badges2222 silver badges2828 bronze badges answered Mar 5 '09 at 15:20 ...
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How to reset a single table in rails?

I want the primary key values to start from 1 again. 8 Answers 8 ...
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check if a std::vector contains a certain object? [duplicate]

Is there something in <algorithm> which allows you to check if a std:: container contains something? Or, a way to make one, for example: ...
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How to view method information in Android Studio?

...Mac OS X, Android Studio > Preferences > Editor > General and check Show quick documentation on mouse move: Other ways: You can go into your IntelliJ's bin folder and search for idea.properties. Add this line to the document: auto.show.quick.doc=true Now you'll have the same floating...
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How to make asynchronous HTTP requests in PHP

Is there a way in PHP to make asynchronous HTTP calls? I don't care about the response, I just want to do something like file_get_contents() , but not wait for the request to finish before executing the rest of my code. This would be super useful for setting off "events" of a sort in my application...
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Disable developer mode extensions pop up in Chrome

Since the latest release of chrome (34.0.1847.116) last week, I have been receiving the “Disable developer mode extensions" when running automated tests using watir-webdriver. ...
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Test if object implements interface

... Robert C. BarthRobert C. Barth 19.9k66 gold badges4343 silver badges5252 bronze badges ...
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Count cells that contain any text

...parameter for criteria. This basically says, as long as its not empty/blank, count it. I believe this is what you want. =COUNTIF(A1:A10, "<>") Otherwise you can use CountA as Scott suggests share | ...