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Make sure only a single instance of a program is running

...ethods: easy_install tendo pip install tendo manually by getting it from http://pypi.python.org/pypi/tendo share | improve this answer | follow | ...
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Select random lines from a file

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Why does HTML5 form-validation allow emails without a dot?

...Because a@b is a valid email address (eg localhost is a valid domain). See http://en.wikipedia.org/wiki/Email_address#Examples Also, keep in mind that you should always do the input validation in server. The client side validation should be only for giving feedback to the user and not be relied on,...
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C# “internal” access modifier when doing unit testing

...;/_Parameter1> </AssemblyAttribute> </ItemGroup> See: https://stackoverflow.com/a/49978185/1678053 Example: https://github.com/gldraphael/evlog/blob/master/Directory.Build.props#L5-L12 share | ...
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Eclipse Kepler for OS X Mavericks request Java SE 6

...all. I was able to solve it by installing Java from the Apple download at http://support.apple.com/kb/dl1572 I hope this helps. share | improve this answer | follow ...
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window.close and self.close do not close the window in Chrome

.... EG: // ==UserScript== // @name window.close demo // @include http://YOUR_SERVER.COM/YOUR_PATH/* // @grant GM_addStyle // ==/UserScript== setTimeout (window.close, 5000); Thanks to zanetu for the update. Note that this will not work if there is only one tab open. It only close...
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Quick and easy file dialog in Python?

...For example search for "activetcl pricing" will lead you to this web page: https://reviews.financesonline.com/p/activetcl/) So tkinter library will cost money for any application wanting to embedd python. I by myself managed to find pythonnet library: Overview here: http://pythonnet.github.io/ S...
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What are 'get' and 'set' in Swift?

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What are best practices for validating email addresses on iOS 2.0

...t thinks they know how to parse/clean/validate an email address is wrong. http://tools.ietf.org/html/rfc2822 Section 3.4.1 is very useful. Notice dtext = NO-WS-CTL / ; Non white space controls %d33-90 / ; The rest of the US-ASCII ...
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How does libuv compare to Boost/ASIO?

...escription), a lot of information across the Internet (video talks, blogs: http://www.gamedev.net/blog/950/entry-2249317-a-guide-to-getting-started-with-boostasio?pg=1 ,etc.) and even books (not for professionals but nevertheless: http://en.highscore.de/cpp/boost/index.html ). Libuv has only one onl...