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List comprehension in Ruby
...k.nil?
self.collect(&block).compact
end
end
some_array = [1, 2, 3, 4, 5, 6]
new_array = some_array.comprehend {|x| x * 3 if x % 2 == 0}
puts new_array
Prints:
6
12
18
I would probably just do it the way you did though.
...
How to swap two variables in JavaScript
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323
Here's a one-liner to swap the values of two variables.
Given variables a and b:
b = [a, a = ...
How to convert an integer to a string in any base?
...
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edited Mar 13 '18 at 0:18
Devin
1,97522 gold badges1717 silver badges2525 bronze badges
an...
What is the result of % in Python?
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310
The % (modulo) operator yields the remainder from the division of the first argument by the...
Concatenating two one-dimensional NumPy arrays
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388
The line should be:
numpy.concatenate([a,b])
The arrays you want to concatenate need to passe...
How do I write a “tab” in Python?
... Dormann
47.5k1111 gold badges101101 silver badges153153 bronze badges
answered Dec 20 '10 at 10:07
SimoneSimone
10.6k11 gold badg...
How do you plot bar charts in gnuplot?
...ar graph:
set boxwidth 0.5
set style fill solid
plot "data.dat" using 1:3:xtic(2) with boxes
data.dat:
0 label 100
1 label2 450
2 "bar label" 75
If you want to style your bars differently, you can do something like:
set style line 1 lc rgb "red"
set style line 2 lc rgb "blue"
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How to get all possible combinations of a list’s elements?
...a list with 15 numbers in, and I need to write some code that produces all 32,768 combinations of those numbers.
27 Answer...
Open Redis port for remote connections
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edited Sep 7 '17 at 13:00
answered Sep 30 '13 at 9:53
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What characters are valid for JavaScript variable names?
... in a single ASCII-only regular expression for JavaScript, it would be 11,236 characters long. Here it is:
// ES5.1 / Unicode 6.1
/^(?!(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|retur...