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System.Threading.Timer in C# it seems to be not working. It runs very fast every 3 second

... It is not necessary to stop timer, see nice solution from this post: "You could let the timer continue firing the callback method but wrap your non-reentrant code in a Monitor.TryEnter/Exit. No need to stop/restart the timer in that case; overlapping calls will not acquire the...
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Invalid date format specification in gemspec

... This will remove the string from the specification file: "find . -type f | xargs perl -pi -e 's/ 00:00:00\.000000000Z//'" – Rainer Blessing Nov 26 '11 at 21:52 ...
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ValueError: math domain error

I was just testing an example from Numerical Methods in Engineering with Python . 4 Answers ...
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How do you create an asynchronous method in C#?

...10) { for (int i = 0; i < num; i++) { await Task.Delay(TimeSpan.FromSeconds(1)); } return DateTime.Now; } If your async method is doing CPU work, you should use Task.Run: private static async Task<DateTime> CountToAsync(int num = 10) { await Task.Run(() => ...); retur...
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SVN: Ignore some directories recursively

... It is possible to ignore build and dist dirs by removing the directories from version control. The trick is to use the --keep-local option to leave the directory in the working copy. For example: svn rm dist --keep-local svn ci -m'removed build directory from version control' The directory wi...
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Is there a “do … while” loop in Ruby?

...rs to tell begin <code> end while <cond> works differently from <code> while <cond> RosettaCode wiki has a similar story: During November 2005, Yukihiro Matsumoto, the creator of Ruby, regretted this loop feature and suggested using Kernel#loop. ...
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LINQ Contains Case Insensitive

... The comment from @Dorival doesnt work, as it gives this errormessage: Error 1 'string' does not contain a definition for 'Contains' and the best extension method overload 'System.Linq.ParallelEnumerable.Contains<TSource>(System.Lin...
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Why can't overriding methods throw exceptions broader than the overridden method?

... @danip the overriding method can throw any subset of exceptions thrown from overriden method. The empty set is a subset too. That is why @Override public void foo() {...} is legal. – Developer Marius Žilėnas Mar 14 '16 at 17:48 ...
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Where can I download Spring Framework jars without using Maven?

...s list of mirrors current I found this maven repo where you could download from directly a zip file containing all the jars you need. http://maven.springframework.org/release/org/springframework/spring/ http://repo.spring.io/release/org/springframework/spring/ Alternate solution: Maven The solutio...
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What is the difference between JDK dynamic proxy and CGLib?

...l when using frameworks that rely on this. That would stop these libraries from allowing to subclass your class and override your methods. share | improve this answer | follo...