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Scatterplot with too many points
I am trying to plot two variables where N=700K. The problem is that there is too much overlap, so that the plot becomes mostly a solid block of black. Is there any way of having a grayscale "cloud" where the darkness of the plot is a function of the number of points in an region? In other words, ins...
Why can't my program compile under Windows 7 in French? [closed]
I'm running Windows 7 French and I'm trying to compile this really basic program, but Visual Studio is being stubborn and refuses to comply. I also tried compiling it with both GCC 4.7 and Clang trunk on Coliru and I get more or less the same errors (output is below the code), though I think Colir...
Is if(items != null) superfluous before foreach(T item in items)?
I often come across code like the following:
12 Answers
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When is a C++ destructor called?
Basic Question: when does a program call a class' destructor method in C++? I have been told that it is called whenever an object goes out of scope or is subjected to a delete
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How to implement “select all” check box in HTML?
I have an HTML page with multiple checkboxes.
29 Answers
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How do I hide a menu item in the actionbar?
I have an action bar with a menuitem. How can I hide/show that menu item?
24 Answers
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Find the files that have been changed in last 24 hours
E.g., a MySQL server is running on my Ubuntu machine. Some data has been changed during the last 24 hours.
6 Answers
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Do sealed classes really offer performance Benefits?
I have come across a lot of optimization tips which say that you should mark your classes as sealed to get extra performance benefits.
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How to crop an image in OpenCV using Python
How can I crop images, like I've done before in PIL, using OpenCV.
8 Answers
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Do I need quotes for strings in YAML?
I am trying to write a YAML dictionary for internationalisation of a Rails project. I am a little confused though, as in some files I see strings in double-quotes and in some without. A few points to consider:
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