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Why use JUnit for testing?

Maybe my question is a newbie one, but I can not really understand the circumstances under which I would use junit ? 11 An...
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What is meant by immutable?

... without worrying that someone else is going to change its contents. Especially when dealing with concurrency, there are no locking issues with objects that never change e.g. class Foo { private final String myvar; public Foo(final String initialValue) { this.myvar = initi...
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Embed SVG in SVG?

...nteresting observation: the latest versions of Firefox, Chrome, and Safari all show only one level of recursion (two dots) using the above. However, if you save the above as "a.svg" and change the image to "b.svg", and then also save it as "b.svg" with the image referencing "a.svg", then Firefox wil...
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Java: Clear the console

... There is no executable named cls.exe or cls.com in a standard Windows installation that could be invoked via Runtime.exec, as the well-known command cls is builtin to Windows’ command line interpreter. When launching a new process via Runtime.exec, the standard output gets redirected to a pipe wh...
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Hover and Active only when not disabled

... I <3 this solution. allows me to have the following: <button class="button">hovers</button> and <button class="button no-hover>doesn't hover</button> by just using :not(.no-hover) – Ben ...
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How do I view the SQLite database on an Android device? [duplicate]

...opy the database from the SD card to the place where your ADB exist. Install Firefox SQLite Manager: https://addons.mozilla.org/en-US/firefox/addon/sqlite-manager/ Open Firefox SQLite Manager (Tools->SQLite Manager) and open your database file from step 3 above. Enjoy! ...
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Why are only final variables accessible in anonymous class?

...used in an anonymous inner class or lambda expression though. It's basically due to the way Java manages closures. When you create an instance of an anonymous inner class, any variables which are used within that class have their values copied in via the autogenerated constructor. This avoids th...
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'sudo gem install' or 'gem install' and gem locations

... Contrary to all the other posts I suggest NOT using sudo when installing gems. Instead I recommend you install RVM and start a happy life with portable gem homes and different version of Ruby all living under one roof. For the uninitia...
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Why do stacks typically grow downwards?

I know that in the architectures I'm personally familiar with (x86, 6502, etc), the stack typically grows downwards (i.e. every item pushed onto the stack results in a decremented SP, not an incremented one). ...
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Regular expression to match non-ASCII characters?

...asiest way to match non-ASCII characters in a regex? I would like to match all words individually in an input string, but the language may not be English, so I will need to match things like ü, ö, ß, and ñ. Also, this is in Javascript/jQuery, so any solution will need to apply to that. ...