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what's data-reactid attribute in html?

While I was going through the HTML of some pages, I noticed that some of them use this attribute "data-reactid" like : 5 A...
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Change a branch name in a Git repo

How do I rename an existing branch in a Git repo? 2 Answers 2 ...
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How can I wait till the Parallel.ForEach completes

I'm using TPL in my current project and using Parallel.Foreach to spin many threads. The Task class contains Wait() to wait till the task gets completed. Like that, how I can wait for the Parallel.ForEach to complete and then go into executing next statements? ...
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Virtualizing an ItemsControl?

I have an ItemsControl containing a list of data that I would like to virtualize, however VirtualizingStackPanel.IsVirtualizing="True" does not seem to work with an ItemsControl . ...
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AngularJS toggle class using ng-class

I am trying to toggle the class of an element using ng-class 6 Answers 6 ...
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CSS :after not adding content to certain elements

I'm having trouble understanding the behavior of the CSS :after property. According to the spec ( here and here ): 3 An...
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Difference between subprocess.Popen and os.system

What is the difference between subprocess.Popen() and os.system() ? 5 Answers 5 ...
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How do I detach objects in Entity Framework Code First?

There is no Detach(object entity) on the DbContext . 2 Answers 2 ...
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What is 'define' used for in JavaScript (aside from the obvious)?

I have searched high and low for documentation on this, but I just cannot find anything anywhere. 2 Answers ...
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How do I make a textarea an ACE editor?

I'd like to be able to convert specific textareas on a page to be ACE editors. 5 Answers ...