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how to provide a swap function for my class?

... is the proper use of swap. Write it this way when you write "library" code and want to enable ADL (argument-dependent lookup) on swap. Also, this has nothing to do with SFINAE. // some algorithm in your code template<class T> void f...
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Output array to CSV in Ruby

It's easy enough to read a CSV file into an array with Ruby but I can't find any good documentation on how to write an array into a CSV file. Can anyone tell me how to do this? ...
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Putting text in top left corner of matplotlib plot

How can I put text in the top left (or top right) corner of a matplotlib figure, e.g. where a top left legend would be, or on top of the plot but in the top left corner? E.g. if it's a plt.scatter(), then something that would be within the square of the scatter, put in the top left most corner. ...
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How to track down log4net problems

I use log4net all the time, but one thing I've never figured out is how to tell what's going on on the inside. For example, I've got a console appender and a database appender in my project. I made a few changes to the database and the code, and now the database appender doesn't work anymore. I'll f...
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Chrome: timeouts/interval suspended in background tabs?

I was testing the accuracy of setTimeout using this test . Now I noticed that (as expected) setTimeout is not very accurate but for most appliances not dramatically inaccurate. Now if I run the test in in Chrome and let it run in a background tab (so, switching to another tab and browse on ther...
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Show an image preview before upload

In my HTML form I have input filed with type file for example : 5 Answers 5 ...
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Can you resolve an angularjs promise before you return it?

I am trying to write a function that returns a promise. But there are times when the information requested is available immediately. I want to wrap it in a promise so that the consumer doesn't need to make a decision. ...
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Is there any way in C# to override a class method with an extension method?

There have been occasions where I would want to override a method in a class with an extension method. Is there any way to do that in C#? ...
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What is an MvcHtmlString and when should I use it?

The documentation for MvcHtmlString is not terribly enlightening: 4 Answers 4 ...
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JUnit confusion: use 'extends TestCase' or '@Test'?

I've found the proper use (or at least the documentation) of JUnit very confusing. This question serves both as a future reference and as a real question. ...