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Get hostname of current request in node.js Express
So, I may be missing something simple here, but I can't seem to find a way to get the hostname that a request object I'm sending a response to was requested from.
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Matplotlib scatterplot; colour as a function of a third variable
I want to make a scatterplot (using matplotlib) where the points are shaded according to a third variable. I've got very close with this:
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bool to int conversion
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int x = 4<5;
Completely portable. Standard conformant. bool to int conversion is implicit!
§4.7/4 from the C++ Standard says (Integral Conversion)
If the source type is bool, the value false is converted to zero an...
JavaScript plus sign in front of function expression
I’ve been looking for information about immediately invoked functions, and somewhere I stumbled on this notation:
3 Answe...
What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
...RuntimeErrors, but will NOT catch Exceptions. So if you raise an Exception in your code, this code will not catch it:
begin
rescue
end
In order to catch the Exception you will have to do this:
begin
rescue Exception
end
This means that in a sense, an Exception is a "worse" error than a Runtime...
“x not in y” or “not x in y”
When testing for membership, we can use:
6 Answers
6
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warning about too many open figures
In a script where I create many figures with fix, ax = plt.subplots(...) , I get the warning RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (matplotlib.pyplot.figure) are retained until explicitly closed and may consume too much memory.
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error: use of deleted function
I've been working on some C++ code that a friend has written and I get the following error that I have never seen before when compiling with gcc4.6:
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Binding ConverterParameter
Is there a way I could do this in a Style :
3 Answers
3
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How to make a div 100% height of the browser window
...ewport-Relative) Lengths
What are Viewport-Percentage Lengths?
From the linked W3 Candidate Recommendation above:
The viewport-percentage lengths are relative to the size of the initial containing block. When the height or width of the initial containing block is changed, they are scaled accor...