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Convert a list to a dictionary in Python
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from itertools import izip
i = iter(a)
b = dict(izip(i, i))
In Python 3 you could also use a dict comprehension, but ironically I think the simplest way to do it will be with range() and len(), which would normally be a code smell.
b = {a[i]: a[i+1] for i in range(0, len(a), 2)}
So the iter(...
Is there a way to change the spacing between legend items in ggplot2?
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ggplot2 v3.0.0 released in July 2018 has working options to modify legend.spacing.x, legend.spacing.y and legend.text.
Example: Increase horizontal spacing between legend keys
library(ggplot2)
ggplot(mtcars, aes(factor(cyl), fil...
What is the HEAD in git?
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edited Nov 30 '16 at 12:30
Maroun
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How to extract the decision rules from scikit-learn decision-tree?
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143
I believe that this answer is more correct than the other answers here:
from sklearn.tree impor...
How to convert a java.util.List to a Scala list
...cit conversion for you; e.g.:
var list = new java.util.ArrayList[Int](1,2,3)
list.foreach{println}
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How do I get the key at a specific index from a Dictionary in Swift?
...ulian Onofrei
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answered Jul 8 '14 at 20:20
Mick MacCallumMick MacCallum
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SVG fill color transparency / alpha?
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Abhi Beckert
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answered May 18 '11 at 9:32
Williham Totl...
Print commit message of a given commit in git
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347
It's not "plumbing", but it'll do exactly what you want:
$ git log --format=%B -n 1 <commi...
Find a pair of elements from an array whose sum equals a given number
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30 Answers
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What is the difference between map and flatMap and a good use case for each?
...wo line-lengths:
rdd.map(_.length).collect
res1: Array[Int] = Array(13, 16)
But flatMap (loosely speaking) transforms an RDD of length N into a collection of N collections, then flattens these into a single RDD of results.
rdd.flatMap(_.split(" ")).collect
res2: Array[String] = Array(...