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Why an interface can not implement another interface?

...ion. A 100% abstract class is functionally equivalent to an interface but it can also have implementation if you wish (in this case it won't remain 100% abstract), so from the JVM's perspective they are different things. Also the member variable in a 100% abstract class can have any access qualifi...
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How can I run code on a background thread on Android?

I want some code to run in the background continuously. I don't want to do it in a service. Is there any other way possible? ...
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Isn't it silly that a tiny favicon requires yet another HTTP request? How can I put the favicon into

... that these browsers still can't: Safari iOS Safari Firefox for Android With the above in mind, we can now use SVG Favicons with a reasonable degree of confidence. 2) Present the SVG as a Data URI The main objective here is to avoid HTTP Requests. As other solutions on this page have mentioned, a...
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The input is not a valid Base-64 string as it contains a non-base 64 character

I have a REST service that reads a file and sends it to another console application after converting it to Byte array and then to Base64 string. This part works, but when the same stream is received at the application, it gets manipulated and is no longer a valid Base64 string. Some junk characters ...
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Replace input type=file by an image

... people, I'd like to customize the ugly input type=file , and I know that it can't be done without some hacks and/or javascript . But, the thing is that in my case the upload file buttons are just for uploading images ( jpeg|jpg|png|gif ), so I was wondering if I could use a " clickable " image wh...
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Why does Google +1 record my mouse movements? [closed]

This is only on pages with a Google +1 box on my website: 9 Answers 9 ...
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What is the best way to ensure only one instance of a Bash script is running? [duplicate]

...st way to ensure only one instance of a given script is running - assuming it's Bash on Linux? 14 Answers ...
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What is NODE_ENV and how to use it in Express?

...pular by the express web server framework. When a node application is run, it can check the value of the environment variable and do different things based on the value. NODE_ENV specifically is used (by convention) to state whether a particular environment is a production or a development environme...
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4

...ned behaviour. And this means anything can happen, and discussing why does it happen under the rules of C++ doesn't make sense. C++11 draft N3337: §5.4:1 If during the evaluation of an expression, the result is not mathematically defined or not in the range of representable values for its t...
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In which scenario do I use a particular STL container?

... STL containers in my book on C++, specifically the section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of them is used. ...