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Maintain aspect ratio of div but fill screen width and height in CSS?

...ite to put together that has a fixed aspect ratio of approximately 16:9 landscape, like a video. 9 Answers ...
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What is a plain English explanation of “Big O” notation?

I'd prefer as little formal definition as possible and simple mathematics. 41 Answers ...
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OAuth 2.0: Benefits and use cases — why?

Could anyone explain what's good about OAuth2 and why we should implement it? I ask because I'm a bit confused about it — here's my current thoughts: ...
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Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta

... With Xcode 4.2 and later versions, including XCode 4.6, there is a better way to migrate your entire developer profile to a new machine. On your existing machine, launch Xcode and do this: Open the Organizer (Shift-Command-2). Select the...
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“tag already exists in the remote" error after recreating the git tag

...o get everyone who already has the "wrong" tag to delete their "wrong tag" and replace it with the new "right tag". Testing in Git 2.10/2.11 shows that retaining the old tag is the default behavior for clients running git fetch, and updating is the default behavior for clients running git fetch --t...
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Solving a “communications link failure” with JDBC and MySQL [duplicate]

... in different web sites, but non of them worked. Finally I changed my code and found out what was the problem. I'll try to tell you about different approaches and sum them up here. While I was seeking the internet to find the solution for this error, I figured out that there are many solutions that...
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How do I obtain crash-data from my Android application?

How can I get crash data (stack traces at least) from my Android application? At least when working on my own device being retrieved by cable, but ideally from any instance of my application running on the wild so that I can improve it and make it more solid. ...
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How to choose the right bean scope?

... represents the scope (the lifetime) of the bean. This is easier to understand if you are familiar with "under the covers" working of a basic servlet web application: How do servlets work? Instantiation, sessions, shared variables and multithreading. @Request/View/Flow/Session/ApplicationScoped A @...
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What is the difference between #include and #include “filename”?

In the C and C++ programming languages, what is the difference between using angle brackets and using quotes in an include statement, as follows? ...
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PyCharm shows unresolved references error for valid code

I am using PyCharm to work on a project. The project is opened and configured with an interpreter, and can run successfully. The remote interpreter paths are mapped properly. This seems to be the correct configuration, but PyCharm is highlighting my valid code with "unresolved reference" errors, ...