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Java Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable

... This command helped me to solve the problem: export DISPLAY=:0 share | improve this answer | follow ...
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Is there a way to detach matplotlib plots so that the computation can continue?

... @noskolo what if I have several figures, how to plot and show Fig1 while continue the background to go on? I'd like this figure being open till the next fig being generated, so at the end I have all figs open and the code is finished. With your current solution, it keeps me wai...
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Private and Protected Members : C++

Can someone enlighten me as to the difference between private and protected members in classes? 17 Answers ...
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What's the best way to trim std::string?

... EDIT Since c++17, some parts of the standard library were removed. Fortunately, starting with c++11, we have lambdas which are a superior solution. #include <algorithm> #include <cctype> #include <locale> // trim from start (in place) static i...
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DateTime.Now vs. DateTime.UtcNow

...nciples of how the two properties work. I know the second one is universal and basically doesn't deal with time zones, but can someone explain in detail how they work and which one should be used in what scenario? ...
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How to assign Profile values?

... I had the same problem today, and learned a lot. There are two kinds of project in Visual Studio -- "Web Site Projects" and "Web Application Projects." For reasons which are a complete mystery to me, Web Application Projects cannot use Profile. directly....
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How to print to console when using Qt

I'm using Qt4 and C++ for making some programs in computer graphics. I need to be able to print some variables in my console at run-time, not debugging, but cout doesn't seem to work even if I add the libraries. Is there a way to do this? ...
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\r\n, \r and \n what is the difference between them? [duplicate]

I need to ask about the difference in a string between \r\n , \r and \n . How is a string affected by each? 4 Answers ...
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How do you change the width and height of Twitter Bootstrap's tooltips?

... max-width doesn't work for me, but width does. Tested on Chrome and IE9. Any clue? – Rosdi Kasim Jul 24 '13 at 13:27 2 ...
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Calculating days between two dates with Java

...d doc for more info). If this is a problem, diff can also be converted by hand: float days = (diff / (1000*60*60*24)); Note that this is a float value, not necessarily an int. share | improve th...