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How to write a Ruby switch statement (case…when) with regex and backreferences?
... groups are always stored in pseudo variables $1 to $9:
case foo
when /^([0-9][0-9])/
print "the month is #{$1}"
else
print "something else"
end
You can also use the $LAST_MATCH_INFO pseudo variable to get at the whole MatchData object. This can be useful when using named captures:
case ...
Where is the syntax for TypeScript comments documented?
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edited Apr 27 '19 at 14:07
slideshowp2
23.8k2222 gold badges9393 silver badges194194 bronze badges
ans...
Git flow release branches and tags - with or without “v” prefix
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101
Well, basically it is a matter of preference, but I prefer the version with the v, as Semver do...
Is there a performance difference between i++ and ++i in C++?
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edited Mar 29 '18 at 20:08
zar
8,36377 gold badges6868 silver badges125125 bronze badges
answered Au...
Reference list item by index within Django template?
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190
It looks like {{ data.0 }}. See Variables and lookups.
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Getting one value from a tuple
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207
You can write
i = 5 + tup()[0]
Tuples can be indexed just like lists.
The main difference b...
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
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80
Here's a small kmeans that uses any of the 20-odd distances in
scipy.spatial.distance, or a user...
How to set a stroke-width:1 on only certain sides of SVG shapes?
...tangle.
rect { fill: none; stroke: black; }
.top { stroke-dasharray: 0,50,150 }
.left { stroke-dasharray: 150,50 }
.bottom { stroke-dasharray: 100,50 }
.right { stroke-dasharray: 50,50,100 }
<svg height="300">
<rect x="0.5" y="0.5" width="50" height="50" class="top"/>
...
Why does changing the sum order returns a different result?
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+500
Maybe this question is stupid, but why does simply changing the order of the elements affects the result?
It will change the poi...