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Python using enumerate inside list comprehension
... the result that gets returned is as expected:
> [(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd')]
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Apache Spark: map vs mapPartitions?
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122
What's the difference between an RDD's map and mapPartitions method?
The method map conver...
Reverse Range in Swift
...sed() method on a range
for i in (1...5).reversed() { print(i) } // 5 4 3 2 1
Or stride(from:through:by:) method
for i in stride(from:5,through:1,by:-1) { print(i) } // 5 4 3 2 1
stide(from:to:by:) is similar but excludes the last value
for i in stride(from:5,to:0,by:-1) { print(i) } // 5 4 3...
Matplotlib different size subplots
...ort matplotlib.pyplot as plt
# generate some data
x = np.arange(0, 10, 0.2)
y = np.sin(x)
# plot it
f, (a0, a1) = plt.subplots(1, 2, gridspec_kw={'width_ratios': [3, 1]})
a0.plot(x, y)
a1.plot(y, x)
f.tight_layout()
f.savefig('grid_figure.pdf')
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Gradient of n colors ranging from color 1 and color 2
I often work with ggplot2 that makes gradients nice ( click here for an example ). I have a need to work in base and I think scales can be used there to create color gradients as well but I'm severely off the mark on how. The basic goal is generate a palette of n colors that ranges from x colo...
Select statement to find duplicates on certain fields
...lds for which there are multiple records, you can use..
select field1,field2,field3, count(*)
from table_name
group by field1,field2,field3
having count(*) > 1
Check this link for more information on how to delete the rows.
http://support.microsoft.com/kb/139444
There should be a criterion...
How to use a variable for the key part of a map
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2 Answers
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iterating over each character of a String in ruby 1.8.6 (each_char)
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edited Sep 28 '09 at 1:02
answered Sep 28 '09 at 0:55
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How to check if all elements of a list matches a condition?
I have a list consisting of like 20000 lists. I use each list's 3rd element as a flag. I want to do some operations on this list as long as at least one element's flag is 0, it's like:
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Adding a new array element to a JSON object
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242
JSON is just a notation; to make the change you want parse it so you can apply the changes to ...