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What does T&& (double ampersand) mean in C++11?
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683
It declares an rvalue reference (standards proposal doc).
Here's an introduction to rvalue refe...
Why does C++11 not support designated initializer lists as C99? [closed]
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36
C++ has constructors. If it makes sense to initialize just one member then that can be expresse...
Generate a heatmap in MatPlotLib using a scatter data set
...matplotlib.pyplot as plt
# Generate some test data
x = np.random.randn(8873)
y = np.random.randn(8873)
heatmap, xedges, yedges = np.histogram2d(x, y, bins=50)
extent = [xedges[0], xedges[-1], yedges[0], yedges[-1]]
plt.clf()
plt.imshow(heatmap.T, extent=extent, origin='lower')
plt.show()
This m...
How to find list intersection?
actual output: [1,3,5,6]
expected output: [1,3,5]
11 Answers
11
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Checking if a string can be converted to float in Python
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316
I would just use..
try:
float(element)
except ValueError:
print "Not a float"
..it'...
UIRefreshControl without UITableViewController
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388
On a hunch, and based on DrummerB's inspiration, I tried simply adding a UIRefreshControl inst...
Query EC2 tags from within instance
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36
You can use a combination of the AWS metadata tool (to retrieve your instance ID) and the new T...
Create an array with random values
How can I create an array with 40 elements, with random values from 0 to 39 ?
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21 Answers
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How to convert an array to object in PHP?
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34 Answers
34
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