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Select multiple columns in data.table by their numeric indices
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Peak detection in a 2D array
...ns. These sums will be exactly the same sums over the 2x2 squares with the top-left corner in the same position:
>>> sums = a[:-1,:-1] + a[1:,:-1] + a[:-1,1:] + a[1:,1:]; sums
array([[ 8, 12],
[20, 24]])
When you have the sums over 2x2 squares, you can use max to find the maximum,...
What do I use for a max-heap implementation in Python?
....heappush(12)
maxh.heappush(12)
minh.heappush(4)
maxh.heappush(4)
# fetch "top" values
print(minh[0], maxh[0]) # "4 12"
# fetch and remove "top" values
print(minh.heappop(), maxh.heappop()) # "4 12"
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Bower and devDependencies vs dependencies
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Rspec doesn't see my model Class. uninitialized constant error
...d it after attempting to run the spec. Added require "rails_helper" to the top of my spec and I was good to go.
– Travis
Jan 29 at 19:05
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How do I write unencoded Json to my View using Razor?
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How do I convert a Ruby class name to a underscore-delimited symbol?
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Gradle, “sourceCompatibility” vs “targetCompatibility”?
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What is an SDL renderer?
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How do I do a 'git status' so it doesn't display untracked files without using .gitignore?
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