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Vertically align an image inside a div with responsive height

I have the following code which sets up a container which has a height that changes with the width when the browser is re-sized (to maintain a square aspect ratio). ...
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Where do the Python unit tests go?

... We had the very same question when writing Pythoscope (https://pypi.org/project/pythoscope/), which generates unit tests for Python programs. We polled people on the testing in python list before we chose a directory, there were many different opinions. In the end we chose to p...
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Best practices for copying files with Maven

... ... Notes: The Atlassian maven repo that has this plugin is here: https://maven.atlassian.com/public/ I recommend downloading the sources and looking at the documentation inside to see all the features the plugin provides. ` ...
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How do you declare an interface in C++?

How do I setup a class that represents an interface? Is this just an abstract base class? 15 Answers ...
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Why does C++11's lambda require “mutable” keyword for capture-by-value, by default?

Short example: 10 Answers 10 ...
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How to display Base64 images in HTML?

I'm having trouble displaying a Base64 image inline. 11 Answers 11 ...
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ASP.NET MVC Razor pass model to layout

What I see is a string Layout property. But how can I pass a model to layout explicitly? 11 Answers ...
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How to initialize log4j properly?

...gure(file/location/log4j.properties) More information is available here: https://logging.apache.org/log4j/1.2/manual.html share | improve this answer | follow ...
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How can I preview a merge in git?

...(git merge-base master develop) master develop | colordiff | less -R — https://git.seveas.net/previewing-a-merge-result.html (thanks to David Normington for the link) P.S.: If you would get merge conflicts, they will show up with the usual conflict markers in the output, e.g.: $ git merge-tr...
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Why isn't vector a STL container?

Item 18 of Scott Meyers's book Effective STL: 50 Specific Ways to Improve Your Use of the Standard Template Library says to avoid vector <bool> as it's not an STL container and it doesn't really hold bool s. ...