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When to use cla(), clf() or close() for clearing a plot in matplotlib?

... They all do different things, since matplotlib uses a hierarchical order in which a figure window contains a figure which may consist of many axes. Additionally, there are functions from the pyplot interface and there are methods ...
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Facebook Graph API v2.0+ - /me/friends returns empty, or only friends who also use my application

... In v2.0 of the Graph API, calling /me/friends returns the person's friends who also use the app. In addition, in v2.0, you must request the user_friends permission from each user. user_friends is no longer included by default in every login. Each user...
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Add vertical whitespace using Twitter Bootstrap?

...g the documentation for used notation: Spacing utilities that apply to all breakpoints, from xs to xl, have no breakpoint abbreviation in them. This is because those classes are applied from min-width: 0 and up, and thus are not bound by a media query. The remaining breakpoints, however, d...
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How do I measure request and response times at once using cURL?

...me="curl -w \"@$HOME/.curl-format.txt\" -o NUL -s " Then you can simply call... curltime wordpress.org Thanks to commenter Pete Doyle! Make a Linux/Mac stand-alone script This script does not require a separate .txt file to contain the formatting. Create a new file, curltime, somewhere in ...
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Syntax behind sorted(key=lambda: …)

... key is a function that will be called to transform the collection's items before they are compared. The parameter passed to key must be something that is callable. The use of lambda creates an anonymous function (which is callable). In the case of sorted ...
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Android: Access child views from a ListView

... adapter. It might not be fully visible (and might not even be visible at all, depending on ListView's threshold of "visibility" before recycling a view that it considers is "scrolled out of view") – Joe Oct 31 '13 at 16:33 ...
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CSS Background Opacity [duplicate]

... It's not really correct to say that "Children inherit opacity". They don't. It's just that if a child is contained in a parent with opacity, the child will have opacity: 1, but the parent applies it's opacity to itself including all it'...
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How to detect online/offline event cross-browser?

...nows that such an attempt would fail), and must return true otherwise. Finally, the spec notes: This attribute is inherently unreliable. A computer can be connected to a network without having Internet access. share ...
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How to un-submodule a Git submodule?

What are the best practices for un-submoduling a Git submodule, bringing all the code back into the core repository? 12 Ans...
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Why isn't there a Guid.IsNullOrEmpty() method

...why Guid in .NET does not have IsNullOrEmpty() method (where empty means all zeros) 6 Answers ...