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What is Android keystore file, and what is it used for?

This is a general question, but particularly I am interested in it's use for Android. What is a keystore file, and what is it used for? ...
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how to provide a swap function for my class?

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How to link godaddy domain with AWS Elastic Beanstalk environment?

...ng into this problem trying to link my Godaddy domain with an AWS Elastic Beanstalk instance . I found a lot of documentation on how to link an EC2 instance with a domain on Godaddy but not for Elastic Beanstalk instance. So I ended up with this URL: www.MY_SITE.elasticbeanstalk.com ...
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How to undo 'git reset'?

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How to stage only part of a new file with git?

I love git add --interactive . It is now part of my daily workflow. 5 Answers 5 ...
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How to change href of tag on button click through javascript

How to change the href attribute value of an <a/> tag through Javascript on button click ? 7 Answers ...
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Why are C# 4 optional parameters defined on interface not enforced on implementing class?

I noticed that with the optional parameters in C# 4 if you specify an optional parameter on an interface you don,t have to make that parameter optional on any implementing class: ...
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How to change size of split screen emacs windows?

I have emacs split horizontally - on top I'm editing Perl code, the bottom is the shell. By default emacs makes the two windows equal in size, but I'd like the shell buffer smaller (maybe half the size?). I was wondering how I could do that. ...
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What is a proper naming convention for MySQL FKs?

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Is there a benefit to defining a class inside another class in Python?

What I'm talking about here are nested classes. Essentially, I have two classes that I'm modeling. A DownloadManager class and a DownloadThread class. The obvious OOP concept here is composition. However, composition doesn't necessarily mean nesting, right? ...