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Why does String.valueOf(null) throw a NullPointerException?
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203
The issue is that String.valueOf method is overloaded:
String.valueOf(Object)
String.valueOf(c...
Actual meaning of 'shell=True' in subprocess
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answered Jul 3 '10 at 18:46
Heath HunnicuttHeath Hunnicutt
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Adding additional data to select options using jQuery
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323
HTML Markup
<select id="select">
<option value="1" data-foo="dogs">this</opt...
Python “raise from” usage
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edited Jul 7 '19 at 23:56
answered Jul 15 '14 at 7:44
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Passing arguments to C# generic new() of templated type
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JaredParJaredPar
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How to randomize (shuffle) a JavaScript array?
...aryValue;
}
return array;
}
// Used like so
var arr = [2, 11, 37, 42];
shuffle(arr);
console.log(arr);
Some more info about the algorithm used.
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Show percent % instead of counts in charts of categorical variables
... geom_bar(aes(y = (..count..)/sum(..count..))) +
## version 3.0.0
scale_y_continuous(labels=percent)
Here's a reproducible example using mtcars:
ggplot(mtcars, aes(x = factor(hp))) +
geom_bar(aes(y = (..count..)/sum(..count..))) +
scale_y_continuous(labe...
Size of character ('a') in C/C++
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354
In C, the type of a character constant like 'a' is actually an int, with size of 4 (or some ot...
How to Diff between local uncommitted changes and origin
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135
Given that the remote repository has been cached via git fetch it should be possible to compare...
How to Free Inode Usage?
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173
It's quite easy for a disk to have a large number of inodes used even if the disk is not very fu...