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How do I plot in real-time in a while loop using matplotlib?
I am trying to plot some data from a camera in real time using OpenCV. However, the real-time plotting (using matplotlib) doesn't seem to be working.
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Is there a performance gain in using single quotes vs double quotes in ruby?
Do you know if using double quotes instead of single quotes in ruby decreases performance in any meaningful way in ruby 1.8 and 1.9.
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Moving decimal places over in a double
So I have a double set to equal 1234, I want to move a decimal place over to make it 12.34
9 Answers
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How to create multidimensional array
Can anyone give me a sample/example of JavaScript with a multidimensional array of inputs? Hope you could help because I'm still new to the JavaScript.
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Can a class member function template be virtual?
I have heard that C++ class member function templates can't be virtual. Is this true?
12 Answers
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How can I add a box-shadow on one side of an element?
I need to create a box-shadow on some block element, but only (for example) on its right side. The way I do it is to wrap the inner element with box-shadow into an outer one with padding-right and overflow:hidden; so the three other sides of the shadow are not visible.
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Change Active Menu Item on Page Scroll?
As you scroll down the page, the active menu item changes. How is this done?
4 Answers
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How to create the most compact mapping n → isprime(n) up to a limit N?
Naturally, for bool isprime(number) there would be a data structure I could query.
I define the best algorithm , to be the algorithm that produces a data structure with lowest memory consumption for the range (1, N], where N is a constant.
Just an example of what I am looking for: I could rep...
javascript: recursive anonymous function?
Let's say I have a basic recursive function:
19 Answers
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Is there a standard sign function (signum, sgn) in C/C++?
I want a function that returns -1 for negative numbers and +1 for positive numbers.
http://en.wikipedia.org/wiki/Sign_function
It's easy enough to write my own, but it seems like something that ought to be in a standard library somewhere.
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