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C# generic type constraint for everything nullable

...oned, you cannot have a compile-time check for it. Generic constraints in .NET are severely lacking, and do not support most scenarios. However I consider this to be a better solution for run-time checking. It can be optimized at JIT compilation time, since they're both constants. public class Som...
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POST data with request module on Node.JS

...ire('request'); request.post({ headers: {'content-type' : 'application/x-www-form-urlencoded'}, url: 'http://localhost/test2.php', body: "mes=heydude" }, function(error, response, body){ console.log(body); }); ...
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How can I get the MAC and the IP address of a connected client in PHP?

... root 48K 2008-11-11 18:11 /usr/sbin/arp* With command: sudo chown root:www-data /usr/sbin/arp you will get: -rwxr-xr-x 1 root www-data 48K 2008-11-11 18:11 /usr/sbin/arp* And because apache is a daemon running under the user www-data, it's now able to execute this command. So if you now us...
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Use Visual Studio web.config transform for debugging [duplicate]

...e trying to do. I've blogged about it at https://devblogs.microsoft.com/aspnet/asp-net-web-projects-web-debug-config-web-release-config/. Here is the summary. Now let’s see how we can enable what the question asker wants to do. To recap, when he builds on a particular configuration he wants a spec...
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How do I redirect with JavaScript? [duplicate]

... To redirect to another page, you can use: window.location = "http://www.yoururl.com"; share | improve this answer | follow | ...
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Is there a print_r or var_dump equivalent in Ruby / Ruby on Rails?

...ebug: http://railscasts.com/episodes/54-debugging-with-ruby-debug http://www.sitepoint.com/article/debug-rails-app-ruby-debug/ http://www.datanoise.com/articles/2006/7/12/tutorial-on-ruby-debug It's incredibly helpful! s...
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get dictionary key by value

...e(dict, "two"); Console.WriteLine("Key: " + key); } Works on .NET 2.0 and in other limited environments. share | improve this answer | follow | ...
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The JPA hashCode() / equals() dilemma

...t/Sets" (if you think of removing an entity which is part of a Set from a OneToMany mapping) which would be answered "No" on the last two options because its hashCode() changes which violates its contract. – MRalwasser Feb 17 '11 at 17:03 ...
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How to get the element clicked (for the whole document)?

...nt // $(event.target).text() gets its text }); Demo: http://jsfiddle.net/xXTbP/ share | improve this answer | follow | ...
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image processing to improve tesseract OCR accuracy

...f command line, maybe you can try to use opensource scantailor.sourceforge.net or commercial bookrestorer. share | improve this answer | follow | ...