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What does the clearfix class do in css? [duplicate]

...nline since with the latter, you can't set the element's dimensions (width and height) as well as vertical paddings (top and bottom) - which floated elements can do since they're treated as block elements. Float problems The main problem is that we're using float against its intended purpose. Ano...
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Delete column from pandas DataFrame

...lass, then a = A(); del a.var works just fine... – dwanderson Oct 4 '16 at 14:24 15 @dwanderson t...
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Is it possible to determine whether ViewController is presented as Modal?

...oller has been deprecated in iOS 6, here's a version that works for iOS 5+ and that compiles without warnings. Objective-C: - (BOOL)isModal { return self.presentingViewController.presentedViewController == self || (self.navigationController != nil && self.navigationController.pre...
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How to spread django unit tests over multiple files?

...ins with test, automatically build a test suite out of those test cases, and run that suite. From Django 1.6 documentation, Test discovery is based on the unittest module’s built-in test discovery. By default, this will discover tests in any file named “test*.py” under the current ...
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Set focus on TextBox in WPF from view model

I have a TextBox and a Button in my view. 21 Answers 21 ...
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How do I clone a job in Jenkins?

...place so that when we do check-ins to Gerrit , Jenkins performs a build and if it succeeds, then the modification in Gerrit is verified. If the build fails then it is not. My understanding is that this is accomplished through jobs set up in Jenkins . We have now created a new branch ( git )...
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Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash

...ior applies to any default value that is subsequently mutated (e.g. hashes and strings), not just arrays. TL;DR: Use Hash.new { |h, k| h[k] = [] } if you want the most idiomatic solution and don’t care why. What doesn’t work Why Hash.new([]) doesn’t work Let’s look more in-depth at why...
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How to check if a service is running on Android?

...the record): Here is the solution proposed by hackbod: If your client and server code is part of the same .apk and you are binding to the service with a concrete Intent (one that specifies the exact service class), then you can simply have your service set a global variable when it is ...
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Change Author template in Android Studio

I want to change the automatic author that appears when I create a file in AndroidStudio. 7 Answers ...
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Has an event handler already been added?

Is there a way to tell if an event handler has been added to an object? I'm serializing a list of objects into/out of session state so we can use SQL based session state... When an object in the list has a property changed it needs to be flagged, which the event handler took care of properly before...