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Compute a confidence interval from sample data
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168
import numpy as np
import scipy.stats
def mean_confidence_interval(data, confidence=0.95):
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What is the correct syntax for 'else if'?
I'm a new Python programmer who is making the leap from 2.6.4 to 3.1.1. Everything has gone fine until I tried to use the 'else if' statement. The interpreter gives me a syntax error after the 'if' in 'else if' for a reason I can't seem to figure out.
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How to get Maven project version to the bash command line
... the ${project.version}:
mvn org.apache.maven.plugins:maven-help-plugin:2.1.1:evaluate \
-Dexpression=project.version
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[] and {} vs list() and dict(), which is better?
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198
In terms of speed, it's no competition for empty lists/dicts:
>>> from timeit import...
How do I match any character across multiple lines in a regular expression?
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answered Oct 1 '08 at 18:52
Jeremy RutenJeremy Ruten
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Consistency of hashCode() on a Java string
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102
I can see that documentation as far back as Java 1.2.
While it's true that in general you sho...
I change the capitalization of a directory and Git doesn't seem to pick up on it
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11 Answers
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How to map and remove nil values in Ruby
... and I'd expect it to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your case, as the block evaluates to falsey, simply:
items.filter_map { |x| process_x url }
"Ruby 2.7 adds Enumerable#filter_map" is a g...